# Thermal Engineering Quiz: What Do You Know About Heat Transfer?

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What do you know about heat transfer? Convection, conduction, and thermal radiation; these are the core three types of heat transfer that you’ll come up against in the following thermal engineering quiz as we look at how heat can be transferred from one place to another. What can you tell us about heat transfer and some of the examples of how it takes place? Take the quiz, and we’ll find out!

• 1.

### WHAT IS AN EXAMPLE OF RADIATION?

• A.

A CAMP FIRE

• B.

HOT AIR BALLOON

• C.

WIND CURRENT

• D.

COPPER

A. A CAMP FIRE
Explanation
A campfire is an example of radiation because it emits heat and light in the form of electromagnetic waves. This process is known as thermal radiation, where heat is transferred through the emission of infrared radiation. When the wood in the campfire burns, it releases energy in the form of heat and light, which radiates outwards into the surrounding environment. This is different from conduction or convection, which involve the transfer of heat through direct contact or the movement of fluids, respectively.

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• 2.

### THE LIGHT BULB IS AN EXAMPLE OF -

• A.

CONDUCTION

• B.

• C.

ELECTROMAGNETIC

• D.

CONVENTION

Explanation
The light bulb is an example of radiation because it emits light energy in the form of electromagnetic waves. Radiation is the transfer of energy through electromagnetic waves, and in the case of a light bulb, the energy is radiated outwards in the form of visible light. Conduction, convection, and electromagnetic are not suitable explanations in this context as they do not accurately describe the transfer of energy from a light bulb.

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• 3.

### DEFINE CONDUCTION?

• A.

THE UP AND DOWN MOVEMENT OF GASES- LIQUID TRANSFERS TO HAET.

• B.

THE PRIMARY METHOD BY WHIC HEAT MOVES GASES THROUGH LIQUID.

• C.

HEAT TRANSFER TO AND THROUGH SOME MATERIALS.

• D.

TRANSFER OF HEAT BETWEEN SUBSTANCES THAT ARE IN DIRECT CONTACT WITH EACH OTHER .

D. TRANSFER OF HEAT BETWEEN SUBSTANCES THAT ARE IN DIRECT CONTACT WITH EACH OTHER .
Explanation
Conduction refers to the transfer of heat between substances that are in direct contact with each other. It occurs when heat energy is transferred from a region of higher temperature to a region of lower temperature through direct molecular collision. This process does not involve the movement of gases or liquids, nor is it specific to any particular material.

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• 4.

### WHEN ELECTROMAGENTIC WAVES TRAVEL THROUGH THE SPACE WHAT THEY CALLED?

• A.

ELECTROMAGNETIC

• B.

CONVENTION

• C.

• D.

CONDUCTION

Explanation
Electromagnetic waves are called radiation when they travel through space. This term refers to the process of energy transfer through the emission of electromagnetic waves, such as light, radio waves, and X-rays. Radiation is different from conduction, which involves the transfer of heat or energy through direct contact, and from convection, which involves the transfer of heat through the movement of a fluid. Therefore, radiation is the correct term to describe the travel of electromagnetic waves through space.

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• 5.

### WHERE DO ELECTROMAGNETIC WAVES TRAVEL THROUGHT?

• A.

EVERYWHERE

• B.

ALL THE SPACE

• C.

EMPTY SPACE

• D.

ALL THE ABOVE

C. EMPTY SPACE
Explanation
Electromagnetic waves are able to travel through empty space because they do not require a medium, such as air or water, to propagate. Unlike mechanical waves, which need a material medium to travel through, electromagnetic waves consist of oscillating electric and magnetic fields that can exist and propagate in a vacuum. Therefore, electromagnetic waves can travel through empty space, making "empty space" the correct answer.

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• 6.

### GIVE AN EXAMPLE OF CONVECTION?

• A.

A LIGHT BULB

• B.

HOT AIR BALLOON

• C.

A CAMP FIRE

• D.

A MICROWAVE OVEN

B. HOT AIR BALLOON
Explanation
A hot air balloon is an example of convection because it involves the transfer of heat through the movement of a fluid. In this case, the fluid is the air inside the balloon. The burner at the bottom of the balloon heats up the air, causing it to become less dense and rise. As the hot air rises, it carries the balloon and its passengers along with it. This process of heat transfer through the movement of a fluid is known as convection.

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• 7.

### CONVENTION IS THE UP AND DOWN MOVEMENT OF GASES AND LIQIDS CAUSE BY -

• A.

HEAT TRANSFER

• B.

ELECTROMAGNETIC

• C.

TRANSFER THE HEAT TO THE OBJECT

A. HEAT TRANSFER
Explanation
The correct answer is "heat transfer" because convention refers to the movement of gases and liquids caused by heat transfer. Heat transfer is the process by which thermal energy is transferred from one object or substance to another. In this case, the up and down movement of gases and liquids is a result of the transfer of heat energy.

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• 8.

### WHEN THE ELECTROMAGNETIC WAVES CONECT WITH THE OBJECT THE WAVES TRANSFER TO WHAT-

• A.

OBJECT

• B.

SPACE

• C.

WAVES

• D.

HEAT

D. HEAT
Explanation
When electromagnetic waves connect with an object, they transfer their energy to the object. This energy is then converted into heat, causing the temperature of the object to increase. Therefore, the correct answer is "HEAT."

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• 9.

### WHAT KIND OF METHOD DOES COVENTION IS?

• A.

SECONDARY METHOD

• B.

PRIMARY METHOD

• C.

ALL THE ABOVE

B. PRIMARY METHOD
Explanation
Covention is a primary method.

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• Current Version
• Mar 22, 2023
Quiz Edited by
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• Feb 05, 2009
Quiz Created by
Stonescience

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