Mid Term Exam 2010-2011
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Science Exam
Questions and Answers
- 1.
Science and Technology are interdependent of each other means
- A.
Technology needs Science
- B.
Science needs Technology
- C.
Science and Technology drive each other
- D.
Science and Technology do not need each other
Correct Answer
C. Science and Technology drive each otherExplanation
The answer "Science and Technology drive each other" implies that both science and technology are mutually dependent and influence each other's progress. Science provides the knowledge and understanding that forms the foundation for technological advancements. On the other hand, technology enables scientific research and experimentation, leading to new discoveries and innovations. This interdependence between science and technology creates a cycle of continuous development and improvement in both fields.Rate this question:
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- 2.
Technology is the application of Science?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Technology is indeed the application of science. Science involves the study and understanding of natural phenomena, while technology refers to the practical application of scientific knowledge to solve problems, create new products, and improve existing processes. Technology is built upon scientific principles and discoveries, using them to develop practical solutions and inventions that benefit society. Therefore, it can be concluded that technology is the application of science.Rate this question:
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- 3.
All of the following are great examples of how the history of science has led to where we are today EXCEPT......
- A.
Cell Phones come from Telegraphs
- B.
Cars come form the Horse Buggy
- C.
The study of plants and animals is called Biology
- D.
The idea that the universe is expanding comes from the telescope
Correct Answer
C. The study of plants and animals is called BiologyExplanation
The given answer, "The study of plants and animals is called Biology," is not an example of how the history of science has led to where we are today. It is a statement of a scientific discipline, but it does not demonstrate how the history of science has contributed to our current state of knowledge or technology. The other options, on the other hand, show how scientific advancements and discoveries in the past have directly influenced and led to the development of modern technologies and understanding.Rate this question:
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- 4.
Is it possible to have strong scientific beliefs and maintain your religious beliefs at the same time?
- A.
Yes
- B.
No
Correct Answer
A. YesExplanation
It is possible to have strong scientific beliefs and maintain religious beliefs simultaneously because science and religion can be seen as addressing different aspects of human existence. Science focuses on empirical evidence and logical reasoning to understand the natural world, while religion deals with matters of faith, spirituality, and the meaning and purpose of life. Many individuals find that scientific discoveries enhance their understanding and appreciation of the complexity and beauty of the universe, while their religious beliefs provide them with moral guidance and a sense of connection to something greater than themselves. Therefore, one can hold both strong scientific and religious beliefs without contradiction.Rate this question:
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- 5.
Which of the following is based on observations, forming hypothesizes, conducting experiments, drawing conclusions, and developing theories?
- A.
Religion
- B.
Science
Correct Answer
B. ScienceExplanation
Science is based on observations, forming hypotheses, conducting experiments, drawing conclusions, and developing theories. It is a systematic and evidence-based approach to understanding the natural world. Through careful observation and experimentation, scientists gather data, analyze it, and draw conclusions based on the evidence. They then develop theories to explain their findings and make predictions about future observations. This process is iterative and subject to revision as new evidence emerges. Religion, on the other hand, is based on faith, belief, and spiritual teachings rather than empirical evidence and the scientific method.Rate this question:
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- 6.
Which of the following is based on your own personal belief system and does not require proof?
- A.
Science
- B.
Religion
Correct Answer
B. ReligionExplanation
Religion is based on personal belief systems and does not require proof. It involves faith and spirituality, often centered around the worship of a higher power or deity. Unlike science, which relies on empirical evidence and experimentation, religion is subjective and varies from person to person. It encompasses moral values, rituals, and doctrines that guide individuals in their spiritual journey. Religion provides a framework for understanding the world, explaining the purpose of life, and offering comfort and solace in times of uncertainty.Rate this question:
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- 7.
The Big Bang Theory challenges religion and says that a God did not create the universe
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
This statement is false because The Big Bang Theory does not challenge religion or make any claims about the existence or non-existence of a God. The Big Bang Theory is a scientific explanation for the origin of the universe based on observational evidence and mathematical models. It does not address religious beliefs or make any statements about the involvement of a divine being in the creation of the universe.Rate this question:
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- 8.
All of the following are main branches of physical science EXCEPT
- A.
Psychology
- B.
Chemistry
- C.
Biology
- D.
Physics
Correct Answer
A. PsychologyExplanation
Psychology is not considered a main branch of physical science because it focuses on the study of the mind and behavior, rather than the physical properties and interactions of matter and energy. The main branches of physical science include chemistry, biology, and physics, which all deal with the fundamental principles of the natural world and its physical processes.Rate this question:
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- 9.
A Cheetah sprinting through a field after a jackrabbit is an example of....
- A.
BioPhysics
- B.
Chemistry
- C.
Biology
- D.
Physics
Correct Answer
A. BioPhysicsExplanation
A cheetah sprinting through a field after a jackrabbit is an example of BioPhysics because it involves the study of the biological processes and physical principles that govern the movement and behavior of living organisms. In this scenario, the cheetah's sprinting is a biological process, while the physical principles of motion and energy transfer are at play as the cheetah chases the jackrabbit.Rate this question:
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- 10.
Which of the following is information obtained through your senses?
- A.
Observation
- B.
Inference
Correct Answer
A. ObservationExplanation
Observation is the correct answer because it refers to the process of gathering information through our senses, such as seeing, hearing, smelling, tasting, and touching. It involves directly perceiving and noticing things in our surroundings without making any assumptions or interpretations. In contrast, inference is the process of drawing conclusions or making assumptions based on observations and prior knowledge. Therefore, while inference may involve some information obtained through our senses, it is not directly obtained through the senses like observation.Rate this question:
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- 11.
All of the following are steps of the scientific method EXCEPT
- A.
Conclusion
- B.
Observation
- C.
Inference
- D.
Hypothesis
- E.
Theory
Correct Answer
C. InferenceExplanation
The scientific method involves a series of steps that scientists follow to investigate and understand natural phenomena. These steps include making observations, formulating a hypothesis, conducting experiments, analyzing data, and drawing conclusions. Inference, on the other hand, is not a step of the scientific method. Inference is the process of drawing logical conclusions based on available evidence or reasoning. While inference may be used in the scientific method to interpret data or draw conclusions, it is not one of the core steps of the method itself.Rate this question:
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- 12.
When using the scientific Method it is very easy for something to become a scientific theory because that is where the scientific method starts....with somebody's opinion
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The given answer is False because a scientific theory is not formed based on someone's opinion. The scientific method involves making observations, forming a hypothesis, conducting experiments, and analyzing data to arrive at a theory. A scientific theory is a well-substantiated explanation of some aspect of the natural world that is based on a body of evidence and has been repeatedly tested and confirmed through experimentation and observation. It is not subjective or based on personal opinions.Rate this question:
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- 13.
Theories will turn into Laws once they are proven
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement that theories will turn into laws once they are proven is false. Theories and laws are different concepts in science. A theory is a well-substantiated explanation of some aspect of the natural world that is based on a body of evidence and has undergone extensive testing. It is a comprehensive framework that explains a wide range of phenomena. On the other hand, a scientific law is a concise statement or mathematical equation that describes a fundamental principle of nature, usually derived from repeated observations or experiments. Laws do not "evolve" from theories; they are separate entities that serve different purposes in scientific understanding.Rate this question:
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- 14.
When you add heat to a substance the particles speed up. When you remove heat the particles slow down. This always happens regardless of who attempts it. This is an example of a true scientific.... Hint: it is called the "KINETIC ______________ OF PARTICLES" and we had a demo with a blow torch and spoon in class
- A.
Fact
- B.
Theory
- C.
Law
- D.
Observation
Correct Answer
B. TheoryExplanation
When heat is added to a substance, the particles within the substance gain energy and move faster, while removing heat causes the particles to lose energy and slow down. This phenomenon is known as the "Kinetic Theory of Particles." The fact that this behavior occurs consistently and predictably, regardless of who observes it, suggests that it is a well-established scientific theory. The demonstration with a blow torch and spoon in class likely illustrated this concept by showing how heat can affect the movement of particles.Rate this question:
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- 15.
Express 9,900,987.986 in scientific notation
- A.
9.9 X 10^-6
- B.
9.9 X 10^6
- C.
99 X 10^5
- D.
.9 X 10^7
Correct Answer
B. 9.9 X 10^6Explanation
The given number, 9,900,987.986, can be expressed in scientific notation as 9.9 X 10^6. In scientific notation, the number is written as a decimal between 1 and 10 (in this case, 9.9) multiplied by a power of 10 (in this case, 10^6). This means that the decimal point is moved 6 places to the right to obtain the original number.Rate this question:
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- 16.
Why is scientific notation important?
- A.
It is the way scientist can use really big or really small numbers in calculations
- B.
It is not important, only some scientists use it
- C.
So scientists can communicate with other scientists in other countries
- D.
It is the ONLY way to solve problems
Correct Answer
A. It is the way scientist can use really big or really small numbers in calculationsExplanation
Scientific notation is important because it allows scientists to work with extremely large or small numbers in a more convenient and concise way. It simplifies calculations and makes it easier to express values that would otherwise involve many zeros. This notation is not the only way to solve problems, but it is a widely used and efficient method in scientific fields.Rate this question:
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- 17.
The following image is showing an example of what?
- A.
SI Units
- B.
Scientific Notation
- C.
Moles Ratios
- D.
Significant Figures
Correct Answer
B. Scientific NotationExplanation
The image is an example of scientific notation. Scientific notation is a way of expressing numbers that are very large or very small. It consists of a number between 1 and 10, multiplied by a power of 10. In the image, the number 2.5 is written as 2.5 x 10^6, indicating that it is multiplied by 10 raised to the power of 6. This notation is commonly used in scientific and mathematical calculations to represent numbers with many zeros or decimal places in a more concise and manageable form.Rate this question:
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- 18.
How many significant figures are in the number 2056?
- A.
1
- B.
2
- C.
3
- D.
4
Correct Answer
D. 4Explanation
The number 2056 has four significant figures because all non-zero digits are significant, and there are no trailing or leading zeros to indicate uncertainty or placeholders.Rate this question:
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- 19.
How many significant figures are in the number? .0009890
- A.
3
- B.
4
- C.
6
- D.
7
Correct Answer
B. 4Explanation
The number .0009890 has four significant figures. Significant figures are the digits that carry meaning in a number. In this case, all the digits after the leading zeros are significant, so the number has four significant figures.Rate this question:
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- 20.
Significant figures show the number that a piece of equipment actually measured. For example 63.4 grams is not as good of a scale as 63.400 grams. This is an example showing how significant figures shows the _____________________ of a piece of equipment
- A.
Precision
- B.
Accuracy
- C.
Reliability
- D.
Dependability
Correct Answer
A. PrecisionExplanation
Significant figures are used to indicate the precision of a measurement. In the given example, 63.4 grams has fewer significant figures compared to 63.400 grams, indicating that the latter measurement is more precise. Precision refers to the level of detail and consistency in a measurement. Therefore, the correct answer is precision.Rate this question:
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- 21.
How many significant figures are in the number 1,000,000,000,000
- A.
Only 1 because we do not know if the rest of the numbers where actually measured or rounded
- B.
13
- C.
Can not be determined
Correct Answer
A. Only 1 because we do not know if the rest of the numbers where actually measured or roundedExplanation
The number 1,000,000,000,000 has only 1 significant figure because the zeros in the number are placeholders and do not contribute to the precision of the measurement. Since we do not know if the rest of the numbers were actually measured or rounded, we cannot consider them as significant figures.Rate this question:
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- 22.
Which number is more accurate? 40 or 40.0
- A.
40
- B.
40.0
- C.
Can not be determined......but 40.0 is more PRECISE than 40
Correct Answer
C. Can not be determined......but 40.0 is more PRECISE than 40Explanation
The given answer suggests that it cannot be determined which number is more accurate, but it states that 40.0 is more precise than 40. This implies that 40.0 has a higher level of precision or specificity compared to 40, which may be rounded or less precise. However, without further context or information, it cannot be definitively determined which number is more accurate.Rate this question:
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- 23.
SI Base Units are important because....
- A.
It checks for the accuracy of measurements
- B.
It allows for a common language for all scientist to communicate with all over the world
- C.
It is only needed to make high school students memorize...it is never used in the real world.
- D.
It checks for the precision of measurements
Correct Answer
B. It allows for a common language for all scientist to communicate with all over the worldExplanation
SI Base Units are important because they provide a standardized system of measurement that allows scientists from all over the world to communicate and compare their findings accurately. This common language ensures consistency and reliability in scientific research and facilitates collaboration among scientists working on different projects or in different countries. It also helps to avoid confusion and errors in measurements, ensuring the accuracy and precision of scientific data.Rate this question:
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- 24.
When a star explodes it causes great temperature and high pressure. This allows for elements overcome the repulsive forces and joins_______________ to form heavier elements
- A.
Electrons
- B.
Neutrons
- C.
Protons
- D.
Quarks
Correct Answer
C. ProtonsExplanation
When a star explodes, the high temperature and pressure allow for the fusion of lighter elements to form heavier elements. This fusion process involves the joining of atomic nuclei, which are composed of protons and neutrons. Therefore, the correct answer is protons.Rate this question:
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- 25.
99% of our entire universe is made up of what element?
- A.
Hydrogen
- B.
Helium
- C.
Lithium
- D.
Carbon Dioxide
Correct Answer
A. HydrogenExplanation
Hydrogen is the correct answer because it is the most abundant element in the universe, making up approximately 99% of its composition. It is found in stars, gas clouds, and other celestial bodies. Hydrogen is also the primary fuel source for stars, including our sun. Its abundance and importance in the universe make it the correct answer to this question.Rate this question:
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- 26.
Cosmic Microwave Background is the ability to see the portion of energy waves that our human eye can not see. When we use the special telescope we see a pattern of heat signature across our entire universe dating back 10 billion years. This provides scientists with evidence for what?
- A.
Global Warming
- B.
The Big Bang Theory
- C.
Kinetic Theory of Particles
- D.
Nothing At All
Correct Answer
B. The Big Bang TheoryExplanation
The correct answer is The Big Bang Theory. The pattern of heat signature across the entire universe, observed through the Cosmic Microwave Background, provides evidence for the Big Bang Theory. This theory suggests that the universe began with a massive explosion, and the observations of the Cosmic Microwave Background support this idea by showing remnants of the early stages of the universe's formation.Rate this question:
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- 27.
What does the following image show us?
- A.
As the distance increases so does the speed
- B.
As the distance increases the speed decreases
- C.
There is no relationship
- D.
As the distance increases the speed remains constant
Correct Answer
A. As the distance increases so does the speedExplanation
The image shows a graph with distance on the x-axis and speed on the y-axis. As the distance increases, the speed also increases. This can be inferred from the upward trend of the plotted points on the graph. Therefore, the correct answer is "as the distance increases so does the speed."Rate this question:
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- 28.
When we use the Hubble telescope to explore the universe we see lots of "Red Shifting" all around us. This tells us what?
- A.
The universe is shrinking
- B.
The universe is steady and does not change
- C.
The universe is expanding
- D.
It tells us nothing of importance
Correct Answer
C. The universe is expandingExplanation
When we observe "Red Shifting" using the Hubble telescope, it indicates that the universe is expanding. Red shifting occurs when light from distant objects in space is stretched and shifted towards longer wavelengths, which suggests that these objects are moving away from us. This phenomenon provides evidence for the expansion of the universe and supports the theory of the Big Bang.Rate this question:
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- 29.
The Big Bang theory is just a "Theory" and has little scientific evidence to support it
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because the Big Bang theory is supported by a significant amount of scientific evidence. This theory explains the origin and expansion of the universe, and it is based on observations such as the cosmic microwave background radiation, the redshift of galaxies, and the abundance of light elements. Additionally, the Big Bang theory is consistent with various mathematical models and calculations. While it is called a theory, in scientific terms, a theory is a well-substantiated explanation supported by evidence, not just a mere guess.Rate this question:
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- 30.
Use the following image to help answer the question "How does gravity work?
- A.
There are invisible magnetic fields that attract everything to each other
- B.
Everything that has mass pushes on space. When large objects push on space they form a warp that causes smaller objects to rotate around them. They do not fall in the hole because inertia keeps them on the same path
- C.
When a star explodes it puts things into motion. The objects stay in motion because there is nothing to stop them
Correct Answer
B. Everything that has mass pushes on space. When large objects push on space they form a warp that causes smaller objects to rotate around them. They do not fall in the hole because inertia keeps them on the same pathExplanation
Gravity is explained by the idea that everything with mass pushes on space, creating a warp. This warp causes smaller objects to orbit around larger objects. These smaller objects do not fall into the "hole" because of inertia, which keeps them on their current path.Rate this question:
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- 31.
Humans have ALWAYS believed that planetary orbits where made of elliptical shapes
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement contradicts historical facts. Humans did not always believe that planetary orbits were made of elliptical shapes. In ancient times, the prevailing belief was that planetary orbits were circular. It was not until Johannes Kepler's laws of planetary motion in the 17th century that the understanding of elliptical orbits became widely accepted. Therefore, the correct answer is False.Rate this question:
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- 32.
Space and time are connected because when things travel through space they have to follow the curves that are present due to massive objects pushing on space. This is the Theory of General Relativity and was discovered by....
- A.
Isaac Newton
- B.
Stephen Hawkins
- C.
Bill Nye
- D.
Albert Einstein
Correct Answer
D. Albert EinsteinExplanation
The correct answer is Albert Einstein. Albert Einstein's Theory of General Relativity explains the connection between space and time. According to this theory, massive objects like planets and stars can cause curves or distortions in space, and objects traveling through space have to follow these curves. This concept is known as the curvature of spacetime. Einstein's theory revolutionized our understanding of gravity and has been confirmed by numerous experiments and observations.Rate this question:
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- 33.
What is the main purpose for me showing the "We Are All Connected Video" in class soooooooooo many times?
- A.
To be annoying
- B.
To show we are made up of simple atoms and elements just like the stars in the cosmos
- C.
To be able to dance
Correct Answer
B. To show we are made up of simple atoms and elements just like the stars in the cosmosExplanation
The main purpose for showing the "We Are All Connected Video" in class multiple times is to demonstrate that we are composed of basic atoms and elements, similar to the stars in the cosmos. This suggests that there is a fundamental connection between all things in the universe, emphasizing our shared origins and interconnectedness.Rate this question:
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- 34.
The fact that we are all connected means that if we study ourselves we can get answers about the universe and if we study the universe we can get answers about ourselves
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement suggests that there is a connection between ourselves and the universe. By studying ourselves, we can gain insights and answers about the universe, and vice versa. This implies that there is a mutual relationship and understanding between the two.Rate this question:
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- 35.
All of the following are considered matter EXCEPT
- A.
Metals
- B.
Chemicals
- C.
Light
- D.
A Wooden Desk
Correct Answer
C. LightExplanation
Light is not considered matter because it does not have mass or occupy space. Matter is defined as anything that has mass and takes up space. Light, on the other hand, is a form of energy that travels in waves and does not possess these physical properties. Therefore, light is not included in the category of matter.Rate this question:
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- 36.
The smallest part of matter that we have the ability to observe are...
- A.
Elements
- B.
Atoms
- C.
Molecules
- D.
Compounds
Correct Answer
B. AtomsExplanation
Atoms are the smallest part of matter that we have the ability to observe. They are the basic building blocks of all elements and cannot be broken down further without losing their chemical properties. Elements are made up of only one type of atom, while molecules and compounds are made up of multiple atoms bonded together. Therefore, atoms are the correct answer as they are the fundamental units of matter that can be observed and studied.Rate this question:
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- 37.
Two atoms of the same element can form a molecule
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Two atoms of the same element can form a molecule through a process called covalent bonding. In this type of bonding, the atoms share electrons to achieve a stable electron configuration. This allows them to form a stable molecule, even though they are both the same element. This is commonly observed in diatomic molecules, such as oxygen (O2) or nitrogen (N2), where two atoms of the same element bond together to form a molecule. Therefore, the statement "Two atoms of the same element can form a molecule" is true.Rate this question:
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- 38.
Two atoms of the same element can form a compound
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Two atoms of the same element cannot form a compound because a compound is formed when different elements chemically combine. In a compound, atoms of different elements are bonded together to form a new substance with different properties. When two atoms of the same element come together, they form a molecule, not a compound. A molecule is the smallest unit of a substance that retains its chemical properties and consists of two or more atoms bonded together. Therefore, the statement is false.Rate this question:
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- 39.
In the following chemical formulas what is water?
- A.
Reactant
- B.
Product
Correct Answer
B. ProductExplanation
The chemical formulas provided are typically used to represent a chemical reaction, with reactants on the left side and products on the right side. In this case, water is identified as a product, meaning it is one of the substances that is formed as a result of the chemical reaction.Rate this question:
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- 40.
In the following reaction which are the reactants?
- A.
Na
- B.
Cl
- C.
NaCl (salt)
- D.
Both Na and Cl
Correct Answer
D. Both Na and ClExplanation
The reactants in the given reaction are sodium (Na) and chlorine (Cl). Sodium and chlorine combine to form sodium chloride (NaCl), which is a salt. Therefore, both Na and Cl are the reactants in this reaction.Rate this question:
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- 41.
When CH4 (methane) reacts with O2 (Oxygen) what is a possible product of the reaction?
- A.
NH4
- B.
H2O
- C.
CS4
- D.
H2SO4
Correct Answer
B. H2OExplanation
When methane (CH4) reacts with oxygen (O2), one possible product of the reaction is water (H2O). Methane is a hydrocarbon, and when it undergoes combustion, it reacts with oxygen to produce carbon dioxide (CO2) and water vapor (H2O). Therefore, in this reaction, methane reacts with oxygen to form water as a product.Rate this question:
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- 42.
Is air a pure substance or a mixture?
- A.
Pure substance
- B.
Mixture
Correct Answer
B. MixtureExplanation
Air is considered a mixture because it is composed of various gases such as nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. These gases are not chemically combined, but rather exist together in the same space. This can be observed through the fact that the composition of air can vary depending on factors such as location and altitude. Therefore, air does not meet the criteria of a pure substance, which consists of only one type of element or compound.Rate this question:
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- 43.
If a substance has a constant composition it is a....
- A.
Element
- B.
Compound
- C.
Homogenous Mixture
- D.
Either a element or a compound
Correct Answer
C. Homogenous MixtureExplanation
A homogeneous mixture is a substance that has a constant composition throughout, meaning that its components are evenly distributed and cannot be easily separated. This is in contrast to an element, which consists of only one type of atom, or a compound, which consists of two or more different elements chemically bonded together. Therefore, a substance with a constant composition is best described as a homogeneous mixture.Rate this question:
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- 44.
Is a water molecule a pure substance or a mixture?
- A.
Pure Substance
- B.
Mixture
Correct Answer
A. Pure SubstanceExplanation
A water molecule is considered a pure substance because it is made up of only one type of molecule, which is H2O. It does not contain any other substances or molecules mixed in it. A pure substance has a fixed composition and properties, and water meets this criteria as it consists of a specific arrangement of hydrogen and oxygen atoms.Rate this question:
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- 45.
All of the following are part of the Kinetic Theory EXCEPT
- A.
All particles are in constant motion. At higher temperatures the motion is faster
- B.
All Matter is made up of particles
- C.
At the same temperature larger particles move faster than smaller particles
- D.
Sublimation is when matter goes from a solid directly to a gas
Correct Answer
D. Sublimation is when matter goes from a solid directly to a gasExplanation
The correct answer is "At the same temperature larger particles move faster than smaller particles." This statement is not a part of the Kinetic Theory. The Kinetic Theory states that all particles are in constant motion and at higher temperatures, the motion is faster. It also states that all matter is made up of particles. However, the statement about larger particles moving faster than smaller particles at the same temperature is not a part of the Kinetic Theory.Rate this question:
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- 46.
Changing what two things will allow you to affect the motion of particles?
- A.
Temperature and Pressure
- B.
Heat and Motion
- C.
Pressure and Motion
- D.
Pressure and Concentration
Correct Answer
A. Temperature and PressureExplanation
By changing the temperature, the kinetic energy of particles will either increase or decrease, affecting their motion. Higher temperatures will increase the speed and random motion of particles, while lower temperatures will decrease their speed and motion. Changing the pressure can also affect the motion of particles. Increasing the pressure will result in the particles being more closely packed together, increasing the frequency of collisions and therefore affecting their motion. Decreasing the pressure will have the opposite effect, with particles being more spread out and having less frequent collisions.Rate this question:
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- 47.
Which state or matter has a definite shape and a definite volume?
- A.
Solid
- B.
Liquid
- C.
Gas
- D.
Plasma
Correct Answer
A. SolidExplanation
A solid is a state of matter that has a definite shape and a definite volume. In a solid, the particles are closely packed together and have strong intermolecular forces, which prevent them from moving freely. This results in a fixed shape and volume for solids, as the particles are unable to move past each other.Rate this question:
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- 48.
As you decrease the volume of a substance what happens to the pressure?
- A.
It increases
- B.
It Decreases
- C.
It Remains the Same
Correct Answer
A. It increasesExplanation
When the volume of a substance is decreased, the particles in the substance become more crowded and have less space to move around. This leads to more frequent collisions between the particles and the container walls, resulting in an increase in the number of collisions per unit area. As a result, the pressure exerted by the substance increases.Rate this question:
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- 49.
Which of the following sections is water in a LIQUID Form only?
- A.
0
- B.
1
- C.
2
- D.
3
- E.
4
- F.
5
Correct Answer
D. 3Explanation
Section 3 is the correct answer because it is the only section where water is present in a liquid form. The other sections may contain water in different forms such as solid (ice) or gas (steam), but section 3 specifically refers to water in its liquid state.Rate this question:
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- 50.
When Matter goes straight from a Gas to a Solid it is called what?
- A.
Sublimation
- B.
Deposition
- C.
Evaporation
- D.
Condensation
Correct Answer
B. DepositionExplanation
Deposition is the process in which matter transitions directly from a gas phase to a solid phase without passing through the liquid phase. This occurs when the temperature of a gas is lowered below its sublimation point, causing the gas particles to lose energy and arrange themselves into a solid structure. Therefore, deposition is the correct term for the transformation of gas to solid without going through the liquid phase.Rate this question:
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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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May 16, 2023Quiz Edited by
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Jan 11, 2011Quiz Created by
Chip_brand
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