# 2.06 Heat, Heat Transfer And Energy Conversions

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Alexiae
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This is a quiz on heat, heat transfer and energy conversions

• 1.

### How does thermal energy naturally travel?

• A.

From a source that has less energy to a source with more energy

• B.

From a source that has more energy to a source of less energy

• C.

It doesn't travel anywhere

• D.

It just keeps traveling

B. From a source that has more energy to a source of less energy
Explanation
Thermal energy naturally travels from a source that has more energy to a source of less energy. This is because heat always flows from a higher temperature to a lower temperature. The transfer of thermal energy occurs through conduction, convection, and radiation. Conduction is the transfer of heat through direct contact between objects, convection is the transfer of heat through the movement of fluids or gases, and radiation is the transfer of heat through electromagnetic waves. Overall, thermal energy moves in order to reach equilibrium and distribute heat evenly.

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• 2.

### Heat will do what if not contained?

• A.

• B.

Stay in one area

• C.

Just disappear

• D.

Go cold

Explanation
Heat will spread out if not contained. When heat is not confined or restricted, it will naturally disperse and distribute itself in its surroundings. This is because heat energy tends to move from areas of higher temperature to areas of lower temperature in order to achieve equilibrium. Therefore, if heat is not contained, it will spread out and distribute itself evenly, until the temperature becomes consistent throughout the environment.

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• 3.

### The transfer of heat between substances that are in direct contact with each other is called what?

• A.

• B.

Convection

• C.

Conduction

• D.

Heat Transfer

C. Conduction
Explanation
Conduction is the transfer of heat between substances that are in direct contact with each other. It occurs through the collision of particles in solids, liquids, or gases, where the particles transfer kinetic energy to neighboring particles. In this process, heat energy is transferred from a region of higher temperature to a region of lower temperature. Conduction is responsible for the heating of objects when they come into contact with a heat source, such as a hot stove or a warm hand.

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• 4.

• A.

Only in a vacuum

• B.

Only in a medium

• C.

Can travel and interact with a medium or in a vacuum

• D.

Does not travel

C. Can travel and interact with a medium or in a vacuum
Explanation
Radiation can travel and interact with a medium or in a vacuum. Radiation refers to the emission of energy as electromagnetic waves or as moving subatomic particles, such as alpha or beta particles. It can travel through a vacuum, such as outer space, where there is no medium, as well as through a medium, such as air or water, where it can interact with atoms or molecules. This interaction can cause the radiation to scatter, absorb, or be transmitted through the medium.

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• 5.

### What is Convection?

• A.

The transfer of heat between substances that are in direct contact with each other

• B.

An electromagnetic wave that travels through space and gets warmed

• C.

Is the distribution of heat by way of moving particles.

• D.

Is another name for a microwave

C. Is the distribution of heat by way of moving particles.
Explanation
Convection is the process of heat transfer in which heat is distributed through the movement of particles. This occurs when warmer particles move from one place to another, carrying their heat energy with them. It is different from conduction, which is the transfer of heat between substances in direct contact, and radiation, which is the transfer of heat through electromagnetic waves. Convection plays a significant role in various natural phenomena, such as the movement of air currents and ocean currents, as well as in everyday situations like boiling water or using a convection oven.

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• 6.

### Energy cannot be what?

• A.

Created

• B.

Destroyed

• C.

Created or destroyed

• D.

Lost

C. Created or destroyed
Explanation
Energy cannot be created or destroyed. This statement is based on the law of conservation of energy, which states that energy can only be transferred or transformed from one form to another, but it cannot be created or destroyed. This principle is fundamental in physics and is supported by numerous experimental observations.

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• 7.

### What are the two forms of Mechanical energy?

• A.

Potential and Kinetic energy

• B.

Chemical and Potential energy

• C.

Electrical and Chemical energy

• D.

Sound and Thermal energy

A. Potential and Kinetic energy
Explanation
Potential energy refers to the energy that an object possesses due to its position or condition. It is stored energy that can be converted into other forms of energy. Kinetic energy, on the other hand, is the energy of an object in motion. It is the energy that an object possesses due to its motion. Therefore, potential and kinetic energy are the two forms of mechanical energy, as they represent the energy associated with the position and motion of an object, respectively.

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• 8.

### Where is Nuclear energy found?

• A.

In the nuclei of atoms

• B.

In electrical waves

• C.

Stored in the bonds of different compounds

• D.

In electromagnetic waves

A. In the nuclei of atoms
Explanation
Nuclear energy is found in the nuclei of atoms. This is because nuclear energy is derived from the process of nuclear reactions, which occur within the nucleus of an atom. These reactions involve the splitting (nuclear fission) or combining (nuclear fusion) of atomic nuclei, releasing a large amount of energy. This energy can then be harnessed and used for various purposes, such as generating electricity in nuclear power plants.

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• 9.

### What energy cannot be transmitted in a vacuum?

• A.

Light

• B.

Electrical

• C.

Thermal

• D.

Sound

D. Sound
Explanation
Sound energy cannot be transmitted in a vacuum because it requires a medium, such as air or water, to travel through. Sound waves are created by the vibration of particles in a medium, and these vibrations are what allow sound to propagate. In a vacuum, there are no particles to vibrate and therefore no medium for sound to travel through. This is why sound cannot be heard in outer space, where there is a vacuum.

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• 10.

### What can be transferred from one object to another or converted from one form to another?

• A.

Sounds

• B.

Electricity

• C.

Energy

• D.

Light

C. Energy
Explanation
Energy can be transferred from one object to another or converted from one form to another. This is because energy is a property that can be transferred or transformed between different objects or forms. For example, when a ball is thrown, the kinetic energy of the person's arm is transferred to the ball, causing it to move. Similarly, electrical energy can be converted into light energy in a light bulb. Therefore, energy is the correct answer as it encompasses the concept of transfer and conversion between objects and forms.

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