# Chapter B3 Forms Of Energy

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• 1.

### The batteries in your iPod are an example of

• A.

Potential energy

• B.

Mechanical energy

• C.

• D.

Nuclear energy

A. Potential energy
Explanation
The batteries in your iPod store potential energy. Potential energy is the energy that an object possesses due to its position or condition. In this case, the batteries store chemical potential energy, which is converted into electrical energy to power the iPod.

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• 2.

### An electric drill changes electrical energy into

• A.

Chemical energy

• B.

Mechanical energy

• C.

Thermal energy

B. Mechanical energy
Explanation
An electric drill converts electrical energy into mechanical energy. When the drill is turned on, an electric current flows through the motor, which generates a magnetic field. This magnetic field interacts with the magnets in the motor, causing the motor to spin. As a result, the mechanical energy is produced, which is then used to rotate the drill bit and perform the drilling action.

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• 3.

### The ability to do work is

energy
Explanation
The given question states that "The ability to do work is". The answer provided is "energy". This suggests that energy is the ability to do work. Energy is a fundamental concept in physics, representing the capacity to perform work or cause a change. It exists in various forms such as kinetic, potential, thermal, and electrical energy, among others. Therefore, the answer "energy" accurately describes the ability to do work.

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• 4.

### What is the only type of radiant energy you can see?

• A.

X-ray

• B.

Gamma rays

• C.

Visible light

• D.

C. Visible light
Explanation
Visible light is the only type of radiant energy that can be seen by the human eye. It consists of a range of wavelengths that are visible to humans, typically ranging from red to violet. Other types of radiant energy, such as x-rays, gamma rays, and radio waves, are not visible to the naked eye and require specialized equipment to detect and observe them.

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• 5.

### A wound spring is an example of

• A.

Potential energy

• B.

Kinetic energy

A. Potential energy
Explanation
A wound spring stores potential energy. When the spring is wound, it is compressed or stretched, and this potential energy is stored in the spring. When the spring is released, this potential energy is converted into kinetic energy as the spring unwinds and moves. Therefore, a wound spring is an example of potential energy.

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• 6.

### What separates white light into different wavelengths?

• A.

Magnifying glass

• B.

Prism

• C.

Flashlight

• D.

Microscope

B. Prism
Explanation
A prism separates white light into different wavelengths by refracting or bending the light as it passes through. This occurs because different colors of light have different wavelengths, causing them to bend at different angles. As a result, when white light passes through a prism, it is split into its component colors, creating a spectrum of colors ranging from red to violet.

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• 7.

### Bats make low frequency sounds.

• A.

True

• B.

False

B. False
Explanation
Bats do not make low frequency sounds. In fact, they use high frequency sounds, known as echolocation, to navigate and locate prey in the dark. They emit these sounds and listen for the echoes that bounce back, allowing them to create a mental map of their surroundings. This ability to use high frequency sounds for echolocation is one of the unique adaptations of bats. Therefore, the correct answer is false.

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• 8.

### What type of energy can cause a sunburn?

• A.

Gamma rays

• B.

Ultraviolet light

• C.

Microwaves

• D.

X-rays

B. Ultraviolet light
Explanation
Ultraviolet light can cause a sunburn. When the skin is exposed to excessive amounts of ultraviolet (UV) radiation from the sun or artificial sources like tanning beds, it damages the DNA in skin cells. This leads to inflammation and redness, commonly known as a sunburn. UV radiation is a form of electromagnetic radiation with a shorter wavelength than visible light, making it more energetic. While gamma rays and x-rays are also forms of high-energy radiation, they are not typically associated with causing sunburns. Microwaves, on the other hand, have much longer wavelengths and lower energy levels, so they do not cause sunburns.

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• 9.

### If you drop a ball from the top of a building, where does it have the most potential energy?

• A.

When it hits the ground

• B.

Halfway down

• C.

At the top of the building

C. At the top of the building
Explanation
The potential energy of an object depends on its height above the ground. As the ball is dropped from the top of the building, it has the maximum potential energy at that point because it is at the greatest height. As it falls towards the ground, the potential energy decreases and is converted into kinetic energy. When the ball hits the ground, all of its potential energy is converted into kinetic energy, and the potential energy becomes zero. Therefore, the ball has the most potential energy at the top of the building.

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• 10.

### When you turn on the radio you change electrical energy into

• A.

Mechanical energy

• B.

Sound energy

• C.

Electrical energy

• D.

Nuclear energy

B. Sound energy
Explanation
When you turn on the radio, the electrical energy is converted into sound energy. The electrical energy powers the electronic components inside the radio, which then produce vibrations in the speaker. These vibrations create sound waves that travel through the air and are detected by our ears as sound energy.

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• 11.

### What characteristic do we use to classify different types of radiant energy?

wavelength
Explanation
Different types of radiant energy can be classified based on their wavelength. Wavelength refers to the distance between two consecutive points of a wave, such as the distance between two peaks or two troughs. Different types of radiant energy, such as visible light, infrared radiation, and ultraviolet radiation, have different wavelengths. By categorizing radiant energy based on wavelength, we can understand and differentiate between the various forms of energy that exist in the electromagnetic spectrum.

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• 12.

### A skier has the most kinetic energy

• A.

At the bottom of the slope

• B.

At the top of the slope

• C.

Halfway down the slope

A. At the bottom of the slope
Explanation
The skier has the most kinetic energy at the bottom of the slope because kinetic energy is directly proportional to the speed and mass of an object. As the skier goes down the slope, their speed increases due to the force of gravity pulling them downward. At the bottom of the slope, the skier has reached their maximum speed, resulting in the highest kinetic energy.

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• 13.

### Sound energy needs matter to

vibrate
Explanation
Sound energy is a form of mechanical energy that is produced by the vibration of matter. When an object vibrates, it creates sound waves that travel through a medium, such as air or water, and are then detected by our ears as sound. Therefore, for sound energy to exist and be perceived, it requires matter to vibrate.

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• 14.

### We say a material is translucent when

• A.

All the light that shines on it passes through and you can see clearly through it

• B.

Some of the light that shines on it passes through and you can see though it but not clearly

• C.

No light can pass through the material

B. Some of the light that shines on it passes through and you can see though it but not clearly
Explanation
Translucent materials allow some light to pass through, but not all of it. This means that when light shines on a translucent material, only a portion of the light is able to pass through, and the rest is either absorbed or reflected. As a result, you can see through the material, but the objects on the other side may not be clearly visible.

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• 15.

### What type of energy travels in waves through empty space?

• A.

Sound

• B.

Mechanical

• C.

Explanation
Radiant energy is the correct answer because it is the type of energy that can travel in waves through empty space. Unlike sound energy, which requires a medium to propagate, radiant energy can travel through a vacuum. It includes various forms of electromagnetic radiation such as light, radio waves, and X-rays. Mechanical energy, on the other hand, requires a physical medium for transmission and cannot travel through empty space.

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• 16.

### What type of material allows no visible light to pass through it?

• A.

Transparent

• B.

Translucent

• C.

Opaque

C. Opaque
Explanation
Opaque materials do not allow any visible light to pass through them. Unlike transparent or translucent materials, which allow light to pass through and be transmitted, opaque materials absorb or reflect light, preventing it from passing through.

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• 17.

### What type of radiant energy would you use to find out if you broke your leg skiing?

• A.

Gamma rays

• B.

X-rays

• C.

Microwaves

• D.

B. X-rays
Explanation
X-rays would be used to find out if you broke your leg skiing because they have the ability to penetrate through soft tissues and create images of bones. X-rays are a form of electromagnetic radiation with higher energy and shorter wavelengths than visible light. They are commonly used in medical imaging to diagnose fractures and other bone-related injuries. Gamma rays, microwaves, and radiowaves do not have the same penetrating power as x-rays and would not be suitable for detecting a broken bone.

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• 18.

### What kind of material allows visible light to travel though it easily allowing a person to see clearly?

• A.

Transparent

• B.

Opaque

• C.

Translucent

A. Transparent
Explanation
Transparent materials allow visible light to travel through them easily, allowing a person to see clearly. These materials have a high degree of clarity, allowing light to pass through without significant scattering or absorption. As a result, objects on the other side of the material can be seen with little distortion. Examples of transparent materials include glass, water, and certain plastics.

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• 19.

### The energy of motion is

• A.

Kinetic energy

• B.

Potential energy

A. Kinetic energy
Explanation
The energy of motion refers to the energy possessed by an object due to its motion. This type of energy is known as kinetic energy. Kinetic energy depends on the mass and velocity of the object. As the object moves faster or has a greater mass, its kinetic energy increases. Therefore, kinetic energy is the correct answer as it accurately describes the energy associated with motion.

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• 20.

### The number of waves passing a point in a period of time is its

frequency
Explanation
The frequency of a wave is defined as the number of waves passing a point in a given period of time. It is a measure of how many complete cycles of a wave pass through a point in a specific time interval. The higher the frequency, the more waves pass through the point in a given time, while a lower frequency means fewer waves pass through the point in the same time interval. Therefore, the correct answer is frequency.

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• 21.

### The rapid back and forth movement of matter necessary for sound energy to travel is called

vibration
Explanation
The rapid back and forth movement of matter is known as vibration. In the context of sound energy, vibrations are responsible for the transmission of sound waves through a medium. These vibrations cause the particles of the medium to oscillate, creating a pattern of compressions and rarefactions that propagate as sound waves. Thus, vibration is the fundamental mechanism through which sound energy travels from its source to our ears.

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• 22.

### Energy due to the movement of atoms or molecules is

thermal energy
Explanation
The correct answer is thermal energy because thermal energy refers to the energy that is generated by the movement of atoms or molecules. As atoms or molecules move, they generate kinetic energy, which is then converted into thermal energy. This energy is responsible for the temperature of a substance and can be transferred from one object to another through processes like conduction, convection, and radiation. Therefore, thermal energy accurately describes the energy due to the movement of atoms or molecules.

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• 23.

### The energy an object has due to its motion, position or condition is

• A.

Mechanical energy

• B.

Electrical energy

• C.

Chemical energy

A. Mechanical energy
Explanation
Mechanical energy is the energy possessed by an object due to its motion, position, or condition. It includes both kinetic energy, which is the energy of motion, and potential energy, which is the energy stored in an object based on its position or condition. Therefore, mechanical energy is the most appropriate answer as it encompasses the various forms of energy associated with the motion, position, or condition of an object.

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• 24.

### The food we eat is an example of

• A.

Mechanical energy

• B.

Electrical energy

• C.

Chemical energy

• D.

C. Chemical energy
Explanation
The food we eat is an example of chemical energy because it undergoes chemical reactions in our body to release energy. When we digest food, it is broken down into smaller molecules through processes like digestion and metabolism. These molecules are then used by our cells to produce ATP (adenosine triphosphate), which is the main source of energy for our body. This energy is stored in the chemical bonds of the molecules in the food, making it an example of chemical energy.

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• 25.

### Humans can hear all frequencies of sound.

• A.

True

• B.

False

B. False
Explanation
Humans can hear a limited range of sounds.

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• 26.

### A high sound has

• A.

A low frequency and a long wavelength

• B.

A low frequency and a short wavelength

• C.

A high frequency and a short wavelength

• D.

A high frequency and a long wavelength

C. A high frequency and a short wavelength
Explanation
A high sound has a high frequency and a short wavelength. This means that the sound wave oscillates rapidly and the distance between each wave is short. Frequency refers to the number of wave cycles that occur in a given time period, while wavelength is the distance between two corresponding points on a wave. In the case of a high sound, the waves are closely packed together, resulting in a short wavelength.

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• 27.

### Energy and matter cannot be created or destroyed.

• A.

True

• B.

False

A. True
Explanation
This statement is based on the law of conservation of energy and the law of conservation of mass. According to these laws, energy and matter can only be converted from one form to another, but the total amount remains constant. This means that energy and matter cannot be created or destroyed, only transformed. Therefore, the correct answer is true.

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• 28.

### When an atom is split, ____________________energy is produced.

• A.

Thermal

• B.

Nuclear

• C.

Chemical

• D.

Mechanical

B. Nuclear
Explanation
When an atom is split, nuclear energy is produced. This is because the process of splitting an atom, known as nuclear fission, releases a large amount of energy in the form of heat and radiation. This energy is harnessed in nuclear power plants to generate electricity. Nuclear fission is the basis of nuclear weapons as well, where the released energy is used to create a powerful explosion.

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• 29.

### When you use a push or a pull to move an object, you are doing

work
Explanation
When you use a push or a pull to move an object, you are exerting force on the object and causing it to move. This requires the transfer of energy from you to the object, which is known as work. Work is defined as the product of the force applied to an object and the distance over which the force is applied. In this case, the force is the push or pull, and the distance is the distance the object moves. Therefore, using a push or a pull to move an object is considered work.

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• 30.

### As you speed down a hill on your bike, when is you kinetic and potential energy about the same?

• A.

At the top of the hill

• B.

Halfway down the hill

• C.

At the bottom of the hill

• D.

They are never the same

B. Halfway down the hill
Explanation
As you speed down a hill on your bike, your kinetic energy increases while your potential energy decreases. At the top of the hill, your potential energy is at its maximum while your kinetic energy is at its minimum. As you go halfway down the hill, your potential energy decreases and your kinetic energy increases. At this point, the two energies become approximately equal. Therefore, halfway down the hill is when your kinetic and potential energy are about the same.

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• Current Version
• Mar 22, 2023
Quiz Edited by
ProProfs Editorial Team
• Apr 01, 2014
Quiz Created by
Matwater

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