The Ultimate Physical Science Practice Quiz!

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What science deals most with energy and forces?
- Biology
- Physics
- Botany
- Agriculture

About This Quiz

Hey there, are you a student studying Physical science? Or a professional just having fun to recap what he's learned so far? Well, whatever, just sit back, relax and have fun with this Physical Science Practice Quiz, it's going to be quite long.

The Ultimate Physical Science Practice Quiz! - Quiz

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2.

Using superconductors to build computers is an example of
- Technology.
- Applied biology.
- Pure science.
- An experiment.
Correct Answer

A. Technology.

Explanation

Using superconductors to build computers is an example of technology because it involves the practical application of scientific knowledge to create a useful and functional device. Superconductors are materials that can conduct electricity with zero resistance at very low temperatures, and utilizing this property in computer technology can significantly enhance their performance and efficiency. This application of superconductors in computer technology falls under the realm of technology, which focuses on the practical implementation and development of scientific discoveries for practical purposes.

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3
3.

Which of the following is not included in physical science?
- Physics
- Chemistry
- Astronomy
- Zoology
Correct Answer

A. Zoology

Explanation

Zoology is not included in physical science because physical science primarily focuses on the study of non-living matter and energy, whereas zoology is the branch of biology that specifically deals with the study of animals. Physical science encompasses physics, chemistry, and astronomy, all of which primarily study the fundamental principles and properties of matter and energy. Zoology, on the other hand, is concerned with the study of living organisms, their behavior, and their interactions with their environment.

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1
4.

A balance is a scientific tool used to measure
- Temperature.
- Time.
- Volume.
- Mass.
Correct Answer

A. Mass.

Explanation

A balance is a scientific tool used to measure mass. It works by comparing an unknown mass to a known mass, allowing for accurate measurement. Temperature is typically measured using a thermometer, time is measured using a clock or stopwatch, and volume is measured using tools such as graduated cylinders or beakers. However, a balance is specifically designed to measure mass by comparing the gravitational force exerted on an object. Therefore, the correct answer is mass.

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5.

Which planet has been "demoted?"
- Pluto
- Mars
- Uranus (ha ha)
- Neptune
Correct Answer

A. Pluto

Explanation

Pluto has been "demoted" because it was reclassified as a dwarf planet in 2006 by the International Astronomical Union (IAU). Previously considered the ninth planet in our solar system, the IAU's new definition of a planet excluded Pluto due to its size and orbit. This decision sparked controversy and debate among astronomers and the public.

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2
6.

Matter is
- Any visible solid that has mass.
- Any liquid that takes up space and has mass.
- Anything that takes up space and has mass.
- Any liquid or solid that takes up space.
Correct Answer

A. Anything that takes up space and has mass.

Explanation

The correct answer is "anything that takes up space and has mass." This answer is the most comprehensive and inclusive, as it encompasses both solids and liquids, and emphasizes the fundamental characteristics of matter - occupying space and having mass. It also allows for the possibility of other forms of matter that may not be explicitly mentioned in the options.

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4
7.

Which of the following is a physical change?
- Melting ice cubes
- Burning paper
- Rusting iron
- Burning gasoline
Correct Answer

A. Melting ice cubes

Explanation

Melting ice cubes is a physical change because it involves a change in the state of matter from solid to liquid without altering the chemical composition of the substance. The ice cubes are still made up of water molecules, but they have transitioned from a solid state to a liquid state due to an increase in temperature.

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1
8.

Which of the following describes what happens as the temperature of a gas in a balloon increases?
- The volume of the gas increases and the speed of the particles in increases.
- The speed of the particles decreases.
- The volume decreases.
- The pressure decreases.
Correct Answer

A. The volume of the gas increases and the speed of the particles in increases.

Explanation

As the temperature of a gas in a balloon increases, the average kinetic energy of the gas particles also increases. This increase in kinetic energy causes the gas particles to move faster and collide more frequently with the walls of the balloon. As a result, the pressure exerted by the gas on the walls of the balloon increases, leading to an increase in volume. Therefore, the correct answer is that the volume of the gas increases and the speed of the particles increases.

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1
9.

The center of our solar system is
- Earth.
- The Moon.
- The sun.
- The Oort cloud.
Correct Answer

A. The sun.

Explanation

The correct answer is the sun. The sun is considered the center of our solar system as it is the largest celestial body and has the highest mass. It exerts gravitational force on all other objects in the solar system, including the planets, moons, and asteroids. The sun also emits light and heat, which are essential for sustaining life on Earth. The Earth, along with other planets, orbits around the sun, making it the central point of our solar system.

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1
10.

Giant elliptical galaxies have _________ stars.
- Dozens
- Thousands
- Hundreds
- Millions
Correct Answer

A. Millions

Explanation

Giant elliptical galaxies are the largest type of galaxies, often containing billions or even trillions of stars. Due to their immense size, it is reasonable to assume that they have millions of stars.

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1
11.

What i the chemical formula for iron (III) oxide?
- Fe2+
- NaCl
- I2
- Fe2O3
Correct Answer

A. Fe2O3

Explanation

Iron (III) oxide is a compound composed of iron (Fe) and oxygen (O). The Roman numeral III in the name indicates that iron has a +3 oxidation state in this compound. The chemical formula Fe2O3 represents two iron atoms bonded with three oxygen atoms, which is the correct formula for iron (III) oxide.

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4
12.

Which one of these forces shapes Earth's surface?
- Glaciers
- Oceans
- Winds
- All of the above
Correct Answer

A. All of the above

Explanation

All of the above forces shape Earth's surface. Glaciers can carve out valleys and create landforms like moraines and fjords. Oceans erode coastlines and deposit sediment to form beaches and barrier islands. Winds can erode rocks and create sand dunes. Therefore, all of these forces contribute to shaping Earth's surface.

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2
13.

The solar system is about ___________ years old.
- 0.5 million
- 0.5 billion
- 4.6 million
- 4.6 billion
Correct Answer

A. 4.6 billion

Explanation

The age of the solar system is estimated to be around 4.6 billion years old. This estimation is based on various scientific methods including radiometric dating of meteorite material, analysis of moon rocks, and studying the formation and evolution of the solar system. These methods provide evidence that the solar system originated from a rotating disk of gas and dust called the solar nebula, which collapsed under its own gravity to form the sun and the planets approximately 4.6 billion years ago.

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1
14.

Materials that can flow to fit their containers include
- Gases.
- Liquids.
- Both gases and liquids.
- Neither gases or liquids.
Correct Answer

A. Both gases and liquids.

Explanation

Both gases and liquids have the ability to flow and take the shape of their containers. Gases are able to fill the entire container they are in, while liquids maintain a fixed volume but can take the shape of the container they are poured into. Therefore, both gases and liquids can adapt and flow to fit their containers.

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1
15.

The speed of sound depends on
- The temperature of the medium.
- The density of the medium.
- How well the particles of the medium transfer energy.
- All of the above.
Correct Answer

A. All of the above.

Explanation

The speed of sound depends on the temperature of the medium because sound waves travel faster in warmer temperatures. It also depends on the density of the medium because denser mediums allow sound waves to travel faster. Additionally, the speed of sound is influenced by how well the particles of the medium transfer energy, as efficient energy transfer allows sound waves to propagate more quickly. Therefore, all of the given options - temperature, density, and energy transfer - affect the speed of sound.

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2
16.

If you add oil to water and shake the two liquids together, you will form a
- Heterogeneous mixture.
- Homogeneous mixture.
- Miscible liquid.
- Pure substance.
Correct Answer

A. Heterogeneous mixture.

Explanation

When oil is added to water and shaken together, they do not blend or dissolve completely. Instead, they form separate layers, with the oil floating on top of the water. This indicates that the oil and water do not mix at a molecular level and remain as distinct phases. Therefore, the resulting mixture is a heterogeneous mixture, which is a combination of two or more substances that can be visibly distinguished.

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1
17.

An example of action-reaction forces is
- Air escaping from a toy balloon.
- A rocket traveling through the air.
- A ball bouncing off a wall.
- All of the above.
Correct Answer

A. All of the above.

Explanation

All of the options mentioned in the question demonstrate action-reaction forces. In the case of air escaping from a toy balloon, the air being forced out in one direction causes the balloon to move in the opposite direction. Similarly, when a rocket travels through the air, the expulsion of gases in one direction propels the rocket in the opposite direction. Lastly, when a ball bounces off a wall, the force exerted by the ball on the wall is countered by an equal and opposite force exerted by the wall on the ball. Therefore, all three scenarios exemplify action-reaction forces.

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10
18.

Which of the following would be an example of a very good conductor of heat energy?
- Liquid
- Wood
- Air
- Metal
Correct Answer

A. Metal

Explanation

Metal is a very good conductor of heat energy because its atoms are closely packed together, allowing heat to transfer easily through the material. Metals have free electrons that can move around and transfer energy quickly, making them efficient conductors. In contrast, liquids, wood, and air have less densely packed particles and fewer free electrons, resulting in poorer heat conductivity.

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3
19.

By studying starlight, astronomers may learn
- That elements that are in the star.
- The surface temperature of the star.
- The speed at which the star is moving toward or away from Earth.
- All of the above.
Correct Answer

A. All of the above.

Explanation

By studying starlight, astronomers can gather valuable information about the elements present in the star through spectroscopy. The absorption and emission lines in the star's spectrum reveal the specific elements and their abundances. Additionally, the surface temperature of the star can be determined by analyzing the intensity of different wavelengths of light emitted by the star. Finally, the Doppler effect can be used to measure the shift in the star's spectral lines, indicating whether it is moving towards or away from Earth and at what speed. Therefore, all of the given options are correct.

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1
20.

Most calendars are based on
- Earth's orbit of the sun.
- Moon's orbit of the Earth.
- Jupiter's orbit of the sun.
- Venus' position in the sky.
Correct Answer

A. Earth's orbit of the sun.

Explanation

Most calendars are based on Earth's orbit of the sun because the concept of a calendar is to track the passing of time, particularly the cycle of seasons. Earth's orbit around the sun takes approximately 365.25 days, which is the basis for our modern calendar year. This orbit determines the changing position of Earth in relation to the sun, resulting in the different seasons throughout the year. Therefore, it makes sense to base a calendar on Earth's orbit of the sun to accurately measure the passage of time and organize our daily lives.

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1
21.

Fossil fuels are made mostly of what elements?
- Carbon and hydrogen
- Carbon and calcium
- Calcium and hydrogen
- Potassium and chlorine
Correct Answer

A. Carbon and hydrogen

Explanation

Fossil fuels are formed from the remains of plants and animals that lived millions of years ago. These organic materials undergo a process called fossilization, which results in the formation of fossil fuels. The main elements found in fossil fuels are carbon and hydrogen. Carbon is a key component of organic matter, and hydrogen is commonly found in hydrocarbons, which are the main constituents of fossil fuels. Therefore, the correct answer is carbon and hydrogen.

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2
22.

Fluid pressure is always directed
- Up.
- Down.
- Sideways.
- In all direction.
Correct Answer

A. In all direction.

Explanation

Fluid pressure is always directed in all directions because fluids are capable of exerting pressure equally in all directions. This is due to the fact that the particles in a fluid are free to move and can transmit force in any direction. When a fluid is at rest, the pressure it exerts is distributed uniformly in all directions, resulting in a balanced pressure throughout the fluid. This property allows fluids to transmit pressure evenly and is the reason why fluids can exert pressure on objects submerged in them from all sides.

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1
23.

A car travels a distance of 210 mi in exactly 4 h. The driver calculates that he has traveled 52.5 mi/h. Which of the following terms most nearly describes his calculation?
- Average speed
- Instantaneous speed
- Instantaneous acceleration
- Displacement
Correct Answer

A. Average speed

Explanation

The driver's calculation of 52.5 mi/h represents the average speed because it is the total distance traveled (210 mi) divided by the total time taken (4 h). Average speed is the total distance traveled divided by the total time taken, and in this case, the driver's calculation is consistent with this definition.

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1
24.

What are the 3 basic types of galaxies?
- Spiral, elliptical, and irregular
- Closed, elliptical, and open
- Spiral, quasar, and pulsar
- Open, binary, and globular
Correct Answer

A. Spiral, elliptical, and irregular

Explanation

The correct answer is spiral, elliptical, and irregular. These are the three basic types of galaxies based on their shapes and structures. Spiral galaxies have a central bulge with spiral arms extending outward, elliptical galaxies have a smooth and oval-shaped appearance, and irregular galaxies have a chaotic and irregular shape. These classifications are based on the Hubble sequence, which categorizes galaxies based on their visual appearance.

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2
25.

The Richter scale expresses an earthquake's
- Damage.
- Location.
- Duration.
- Magnitude.
Correct Answer

A. Magnitude.

Explanation

The Richter scale is used to measure the magnitude of an earthquake, which refers to the amount of energy released during the earthquake. It does not measure the damage caused by the earthquake, its location, or duration. The magnitude is an important factor in determining the potential impact of an earthquake and helps in assessing the level of destruction and potential hazards it may cause.

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1
26.

The composition of the mixture of gases that makes up our air is best represented on what kind of graph?
- Line graph
- Variable graph
- Bar graph
- Pie chart
Correct Answer

A. Pie chart

Explanation

A pie chart is the best representation for the composition of the mixture of gases in our air because it visually displays the proportions of different gases as slices of a pie. Each slice represents a specific gas, and the size of the slice corresponds to the percentage or proportion of that gas in the mixture. This allows for an easy comparison of the different gases and their relative amounts in the air. A line graph shows the relationship between variables over a continuous scale, a variable graph is not a commonly used term, and a bar graph is more suitable for comparing discrete categories or quantities.

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3
27.

An electric generator is a device that can convert
- Nuclear energy to electrical energy.
- Wind energy to electrical energy.
- Energy from burning coal to electrical energy.
- All of the above.
Correct Answer

A. All of the above.

Explanation

The correct answer is "All of the above" because an electric generator is a device that can convert various forms of energy into electrical energy. It can convert nuclear energy, wind energy, and energy from burning coal into electrical energy. This means that an electric generator can utilize different energy sources to produce electricity, making it a versatile device that can adapt to different energy generation methods.

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1
28.

Compounds and elements are
- Always solids.
- Mixtures.
- Pure substances.
- Dense.
Correct Answer

A. Pure substances.

Explanation

Compounds and elements are classified as pure substances because they consist of only one type of particle. Compounds are made up of two or more different elements chemically bonded together, while elements are composed of identical atoms. Both compounds and elements have fixed compositions and distinct properties, distinguishing them from mixtures. This classification does not imply that compounds and elements are always solids, as they can exist in different states of matter depending on temperature and pressure.

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2
29.

Which of the following is a homogeneous mixture?
- Tossed salad
- Soil
- Salt water
- Vegetable soup
Correct Answer

A. Salt water

Explanation

Salt water is a homogeneous mixture because it has a uniform composition throughout. In salt water, the salt (solute) is evenly distributed in the water (solvent), resulting in a solution with no visible separation of components. This is in contrast to the other options listed, such as tossed salad, soil, and vegetable soup, which are heterogeneous mixtures where the components are not evenly distributed and can be visually distinguished.

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1
30.

__________ rock is formed from magma.
- Igneous
- Metamorphic
- Sedimentary
- Schist
Correct Answer

A. Igneous

Explanation

Igneous rock is formed from magma, which is molten rock that solidifies either below or above the Earth's surface. As magma cools and solidifies, it forms igneous rock. This type of rock is characterized by its crystalline structure and can have a range of textures and compositions depending on the cooling rate and mineral content of the magma. Examples of igneous rocks include granite, basalt, and obsidian.

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1
31.

Which of the following materials is an example of a solid dessolved in another solid?
- Smoke
- Bronze
- Mayonnaise
- Ice
Correct Answer

A. Bronze

Explanation

Bronze is an alloy made by combining copper and tin, both of which are solid metals. In this case, the solid copper is dissolved in the solid tin, resulting in a solid solution. Smoke is a mixture of solid particles and gases, not a solid dissolved in another solid. Mayonnaise is a mixture of liquid oil and other ingredients, also not a solid dissolved in another solid. Ice is a solid form of water, but it is not dissolved in another solid material. Therefore, bronze is the only material in the given options that fits the description of a solid dissolved in another solid.

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1
32.

The type of energy transfer that takes place between objects in direct contact is
- Conduction.
- Convection.
- Contraction.
- Radiation.
Correct Answer

A. Conduction.

Explanation

Conduction is the type of energy transfer that occurs between objects in direct contact. When two objects are in contact, heat energy is transferred from the hotter object to the cooler one through direct molecular collisions. This transfer of heat occurs due to the movement of the particles within the objects. Conduction is a common form of energy transfer in solids, where the particles are closely packed together and can easily pass on the heat energy. Convection, on the other hand, involves the transfer of heat through the movement of fluids, while radiation is the transfer of heat through electromagnetic waves. Contraction is not a type of energy transfer.

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2
33.

Which of the following would be an example of a very good insulator?
- Metal
- Wood
- Air
- Liquid
Correct Answer

A. Wood

Explanation

Wood would be an example of a very good insulator because it has a low thermal conductivity. This means that it does not easily allow heat to pass through it. Wood is made up of a complex structure of cells and fibers that trap air pockets, which reduces the transfer of heat. Additionally, wood is a poor conductor of electricity, making it a good insulator for electrical currents.

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3
34.

When a chemical reaction occurs, atoms are never
- Ionized.
- Rearranged.
- Destroyed.
- Vaporized.
Correct Answer

A. Destroyed.

Explanation

When a chemical reaction occurs, atoms are never destroyed. In a chemical reaction, the atoms present in the reactants rearrange to form new products. The total number of atoms remains the same before and after the reaction, following the law of conservation of mass. Atoms can be ionized, meaning they gain or lose electrons to form ions, but they are not destroyed.

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1
35.

Most waves are caused by
- Velocity.
- Amplitude.
- A vibration.
- Earthquakes.
Correct Answer

A. A vibration.

Explanation

Most waves are caused by a vibration. Waves are disturbances that travel through a medium, transferring energy from one point to another. These disturbances are created by the vibration or oscillation of particles in the medium. As the particles vibrate, they pass on their energy to neighboring particles, causing a wave to propagate. This can be observed in various types of waves, such as sound waves, water waves, and light waves, where the initial source of the wave is a vibrating object or source.

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3
36.

Light can be modeled as a
- Electromagnetic waves.
- A stream of particles called photons.
- Rays that travel in straight lines.
- All of the above.
Correct Answer

A. All of the above.

Explanation

Light can be modeled as electromagnetic waves because it exhibits wave-like properties such as interference and diffraction. It can also be modeled as a stream of particles called photons, as demonstrated by the photoelectric effect. Additionally, light can be described as rays that travel in straight lines, as observed in geometric optics. Therefore, all of the given options accurately represent different aspects of how light can be modeled.

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2
37.

The process of producing an electric current by moving a magnet in and out of a coil of wire is called
- Magnetic deduction.
- Electromagnetic induction.
- Magnetic reduction.
- Magnetic production.
Correct Answer

A. Electromagnetic induction.

Explanation

The process described in the question involves the production of an electric current by moving a magnet in and out of a coil of wire. This phenomenon is known as electromagnetic induction, as it demonstrates the relationship between magnetic fields and electric currents. It is not referred to as magnetic deduction, magnetic reduction, or magnetic production, as these terms do not accurately describe the process described in the question.

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2
38.

Which of Dalton's statements about the atom was later proven false?
- Atoms cannot be subdivided.
- Atoms are tiny.
- Atoms of different elements are not identical.
- Atoms join to form molecules.
Correct Answer

A. Atoms cannot be subdivided.

Explanation

Dalton's statement that "atoms cannot be subdivided" was later proven false. The discovery of subatomic particles such as protons, neutrons, and electrons showed that atoms are indeed made up of smaller particles. This led to the development of the atomic model, which explains the structure of atoms and their subatomic components.

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2
39.

Which statement about atoms of elements in the same group of the periodic table is true?
- They have the same number of protons.
- They have the same mass number.
- They have similar chemical properties.
- They have the same number of total electrons.
Correct Answer

A. They have similar chemical properties.

Explanation

Atoms of elements in the same group of the periodic table have similar chemical properties because they have the same number of valence electrons. Valence electrons are the outermost electrons involved in chemical bonding, and they determine the reactivity and chemical behavior of an element. Elements in the same group have the same number of valence electrons, which leads to similar chemical properties. This is why elements in the same group often exhibit similar trends in their reactivity, bonding, and the types of compounds they form.

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1
40.

When a solution of nitric acid is added to a solution of calcium hydroxide, the salt formed has the formula
- Ca(NO3)2.
- Ca(OH)2.
- H2O
- CaH
Correct Answer

A. Ca(NO3)2.

Explanation

When nitric acid (HNO3) is added to calcium hydroxide (Ca(OH)2), a neutralization reaction occurs. The hydrogen ions (H+) from the nitric acid react with the hydroxide ions (OH-) from the calcium hydroxide to form water (H2O). The remaining ions, calcium (Ca2+) and nitrate (NO3-), combine to form the salt calcium nitrate (Ca(NO3)2). Therefore, the correct formula for the salt formed is Ca(NO3)2.

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1
41.

The _________ is the change in the electrical potential energy of a charged particle per unit charge:
- Circuit
- Voltage
- Induction
- Power
Correct Answer

A. Voltage

Explanation

Voltage is the measure of the electric potential difference between two points in an electric circuit. It represents the change in electrical potential energy per unit charge. In other words, voltage tells us how much work is done to move a charged particle from one point to another in an electric field. It is measured in volts and is a fundamental concept in understanding electrical circuits and the flow of electric current.

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2
42.

Which of the following can help prevent a circuit from overloading?
- A fuse
- A switch
- A circuit breaker
- Both (A) and (C)
Correct Answer

A. Both (A) and (C)

Explanation

Both a fuse and a circuit breaker can help prevent a circuit from overloading. A fuse is a protective device that melts when the current exceeds a certain limit, breaking the circuit and preventing damage. A circuit breaker, on the other hand, is a switch that automatically trips and interrupts the flow of current when it detects an overload. Both of these devices are designed to protect the circuit and prevent overloading, ensuring the safety of the electrical system and preventing damage to the connected devices.

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1
43.

Detergents have replaced soap in many uses because detergents
- Are made from animal fat.
- Do not form insoluble substances.
- Are milder than soap.
- Contain ammonia.
Correct Answer

A. Do not form insoluble substances.

Explanation

Detergents have replaced soap in many uses because they do not form insoluble substances. Unlike soap, which can form scum and residue in hard water, detergents are designed to be water-soluble and do not leave behind any insoluble substances. This makes detergents more effective in cleaning and prevents the build-up of residue on surfaces.

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2
44.

Newton's first law of motion states tat an object
- At rest remains at rest unless it experiences an unbalanced force.
- In motion maintains its velocity unless it experiences an unbalanced force.
- Will tend to maintain its motion unless it experiences an unbalanced force.
- All of the above.
Correct Answer

A. All of the above.

Explanation

The correct answer is "All of the above." This is because Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest unless acted upon by an unbalanced force. Similarly, an object in motion will continue to move at a constant velocity unless acted upon by an unbalanced force. Therefore, all the statements in the answer options are true and can be considered as explanations for Newton's first law of motion.

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1
45.

The number of waves passing a given point per unit of time is called the
- Frequency.
- Wave speed.
- Wavelength.
- Amplitude.
Correct Answer

A. Frequency.

Explanation

The number of waves passing a given point per unit of time is called the frequency. This refers to how many complete wave cycles occur in a specific period. It is a measure of how fast the waves are oscillating or vibrating. Wave speed refers to the rate at which the wave propagates through a medium, while wavelength is the distance between two corresponding points on a wave. Amplitude, on the other hand, represents the maximum displacement of particles in a wave from their equilibrium position.

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4
46.

The combining of waves as they meet is known as
- A crest.
- Noise.
- Interference.
- The Doppler effect.
Correct Answer

A. Interference.

Explanation

When waves meet, they can interact with each other in different ways. Interference refers to the combining of waves, resulting in either reinforcement (constructive interference) or cancellation (destructive interference) of the waves. This phenomenon occurs when waves overlap in space and time, leading to a change in the overall amplitude of the resulting wave. Therefore, interference is the correct term to describe the combining of waves as they meet.

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2
47.

A pattern of stars seen from Earth is a
- Galaxy.
- Nebula.
- Milky Way.
- Constellation.
Correct Answer

A. Constellation.

Explanation

A pattern of stars seen from Earth is referred to as a constellation. Constellations are groups of stars that form recognizable shapes or patterns in the night sky. They have been named and identified by astronomers throughout history. Nebula refers to a cloud of gas and dust in space, while a galaxy is a vast system of stars, gas, and dust held together by gravity. The Milky Way is the name of the galaxy in which our solar system is located.

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1
48.

During which change of state do atoms or molecules become more ordered?
- Boiling
- Condensation
- Melting
- Sublimation
Correct Answer

A. Condensation

Explanation

Condensation is the change of state in which a gas or vapor transforms into a liquid. During condensation, the atoms or molecules come closer together and form orderly arrangements, resulting in a more ordered state compared to the gaseous phase. This is because the energy of the particles decreases, causing them to slow down and stick together. Therefore, condensation is the process in which atoms or molecules become more ordered.

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3
49.

Gases are more soluble in liquids when the pressure is __________ and the temperature is _________.
- High, high
- High, low
- Low, high
- Low, low
Correct Answer

A. High, low

Explanation

Gases are more soluble in liquids when the pressure is high and the temperature is low. This is because high pressure increases the number of gas molecules that come into contact with the liquid, increasing the chances of them dissolving. On the other hand, low temperature reduces the kinetic energy of the gas molecules, making them move slower and facilitating their interaction with the liquid, leading to increased solubility.

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1

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Which planet has been "demoted?"

Matter is

Which of the following is a physical change?

Which of the following describes what happens as the temperature of a gas in a balloon increases?

The center of our solar system is

Giant elliptical galaxies have _________ stars.

What i the chemical formula for iron (III) oxide?

Which one of these forces shapes Earth's surface?

The solar system is about ___________ years old.

Materials that can flow to fit their containers include

The speed of sound depends on

If you add oil to water and shake the two liquids together, you will form a

An example of action-reaction forces is

Which of the following would be an example of a very good conductor of heat energy?

By studying starlight, astronomers may learn

Most calendars are based on

Fossil fuels are made mostly of what elements?

Fluid pressure is always directed

A car travels a distance of 210 mi in exactly 4 h. The driver calculates that he has traveled 52.5 mi/h. Which of the following terms most nearly describes his calculation?

What are the 3 basic types of galaxies?

The Richter scale expresses an earthquake's

The composition of the mixture of gases that makes up our air is best represented on what kind of graph?

An electric generator is a device that can convert

Compounds and elements are

Which of the following is a homogeneous mixture?

__________ rock is formed from magma.

Which of the following materials is an example of a solid dessolved in another solid?

The type of energy transfer that takes place between objects in direct contact is

Which of the following would be an example of a very good insulator?

When a chemical reaction occurs, atoms are never

Most waves are caused by

Light can be modeled as a

The process of producing an electric current by moving a magnet in and out of a coil of wire is called

Which of Dalton's statements about the atom was later proven false?

Which statement about atoms of elements in the same group of the periodic table is true?

When a solution of nitric acid is added to a solution of calcium hydroxide, the salt formed has the formula

The _________ is the change in the electrical potential energy of a charged particle per unit charge:

Which of the following can help prevent a circuit from overloading?

Detergents have replaced soap in many uses because detergents

Newton's first law of motion states tat an object

The number of waves passing a given point per unit of time is called the

The combining of waves as they meet is known as

A pattern of stars seen from Earth is a

During which change of state do atoms or molecules become more ordered?

Gases are more soluble in liquids when the pressure is __________ and the temperature is _________.

Gases are more soluble in liquids when the pressure is __ and the temperature is _.