This GCSE Physics Energy quiz will challenge you on transfer by heating. Energy can be transferred by many different methods and into many different forms. A lot of energy transfers involve heat which sometimes is useful and sometimes is wasted. For the GCSE, you need to be able to recognise situations in which other forms of energy are transferred into heat energy, to identify if the heat energy is useful or wasted, how to reduce the heat energy losses from buildings and to be able to explain how heat energy moves from one place to another.
Energy transfers can be represented in different ways. One of these is by an energy transfer diagram. This has three parts and usually only shows the main useful energy transfer. The first part of the diagram indicates the energy input, for example, chemical energy in the fuel for a car engine.
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The second part of the diagram shows the process (in our example, this would be a picture of a car engine). The third part indicates the useful energy output from the engine which is the kinetic energy.
A different way of representing energy transfers is a Sankey diagram. This is most commonly used to represent energy efficiency as it is drawn to scale and shows the useful energy transfers and the waste energies. A Sankey diagram is sometimes presented on squared paper, with each square representing a specific quantity of energy; other times, it is just drawn as two or more arrows, with the energy values written on the arrows. You may be asked to work out the efficiency of an energy transfer from the figures on a Sankey diagram so make sure that you revise how to do that.
Where you come across questions about reducing heat losses from buildings, you are expected to know what U-values are and what they tell you plus how and why the various methods of insulation work. For example, loft and cavity wall insulation works by trapping air, since air is a poor conductor of heat, it slows down the speed at which heat leaves a building. Higher tier candidates would be expected to relate heat insulation to the kinetic theory. An example of this would be to show that you understand why warmer air rises and how conduction of heat occurs in solids.
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1.
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What kind of surfaces is heat radiation emitted from? |
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[ ] |
Shiny surfaces |
[ ] |
Dark surfaces |
[ ] |
All surfaces |
[ ] |
Kitchen surfaces |
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2.
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How does heat transfer through the vacuum of space? |
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[ ] |
By radiation |
[ ] |
By conduction |
[ ] |
By spacecraft |
[ ] |
It doesn't |
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3.
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Which of the following is one reason why metals are good conductors of heat? |
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[ ] |
They are shiny |
[ ] |
They have free electrons |
[ ] |
They have a high resistance |
[ ] |
They are rigid |
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4.
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Which sentence best describes how conduction works? |
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[ ] |
Conduction involves vibrating particles passing the heat energy along |
[ ] |
The heat is radiated into the surroundings |
[ ] |
Warm particles rise and cold particles fall |
[ ] |
Particles do not make contact with each other but are heated individually via an external source |
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5.
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What is evaporation? |
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[ ] |
The process during which fastest moving particles of a liquid escape from the liquid's surface |
[ ] |
The vaporization of the entire mass of the liquid as heat energy is applied |
[ ] |
It is the collective movement of molecules in liquids and gases |
[ ] |
High energy particles knock lower energy particles out of the liquid and into the air |
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6.
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What factor will cause an object to lose its heat energy the fastest? |
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[ ] |
Heating the object |
[ ] |
A smaller temperature difference between the object and its surroundings |
[ ] |
A larger temperature difference between the object and its surroundings |
[ ] |
Encasing the object in a blanket |
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7.
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What does the rate at which an object transfers energy by heating depend on? |
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[ ] |
Surface area and volume |
[ ] |
The material from which the object is made |
[ ] |
The nature of the surface with which the object is in contact |
[ ] |
All of the above |
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8.
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What does the transfer of energy by conduction, convection and evaporation involve? |
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[ ] |
Radio waves |
[ ] |
Particles |
[ ] |
Sound waves |
[ ] |
UV waves |
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9.
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Which of the following surfaces is the best absorber of heat? |
|
[ ] |
Shiny surface |
[ ] |
Black surface |
[ ] |
White surface |
[ ] |
Red surface |
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10.
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Which surface is the best reflector of heat? |
|
[ ] |
Red surface |
[ ] |
Black surface |
[ ] |
Blue surface |
[ ] |
Shiny white surface |
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|
1.
|
What kind of surfaces is heat radiation emitted from? |
|
[ ] |
Shiny surfaces |
[ ] |
Dark surfaces |
[x] |
All surfaces |
[ ] |
Kitchen surfaces |
|
|
2.
|
How does heat transfer through the vacuum of space? |
|
[x] |
By radiation |
[ ] |
By conduction |
[ ] |
By spacecraft |
[ ] |
It doesn't |
|
|
3.
|
Which of the following is one reason why metals are good conductors of heat? |
|
[ ] |
They are shiny |
[x] |
They have free electrons |
[ ] |
They have a high resistance |
[ ] |
They are rigid |
|
|
4.
|
Which sentence best describes how conduction works? |
|
[x] |
Conduction involves vibrating particles passing the heat energy along |
[ ] |
The heat is radiated into the surroundings |
[ ] |
Warm particles rise and cold particles fall |
[ ] |
Particles do not make contact with each other but are heated individually via an external source |
|
|
5.
|
What is evaporation? |
|
[x] |
The process during which fastest moving particles of a liquid escape from the liquid's surface |
[ ] |
The vaporization of the entire mass of the liquid as heat energy is applied |
[ ] |
It is the collective movement of molecules in liquids and gases |
[ ] |
High energy particles knock lower energy particles out of the liquid and into the air |
|
|
6.
|
What factor will cause an object to lose its heat energy the fastest? |
|
[ ] |
Heating the object |
[ ] |
A smaller temperature difference between the object and its surroundings |
[x] |
A larger temperature difference between the object and its surroundings |
[ ] |
Encasing the object in a blanket |
|
|
7.
|
What does the rate at which an object transfers energy by heating depend on? |
|
[ ] |
Surface area and volume |
[ ] |
The material from which the object is made |
[ ] |
The nature of the surface with which the object is in contact |
[x] |
All of the above |
|
|
8.
|
What does the transfer of energy by conduction, convection and evaporation involve? |
|
[ ] |
Radio waves |
[x] |
Particles |
[ ] |
Sound waves |
[ ] |
UV waves |
|
|
9.
|
Which of the following surfaces is the best absorber of heat? |
|
[ ] |
Shiny surface |
[x] |
Black surface |
[ ] |
White surface |
[ ] |
Red surface |
|
|
10.
|
Which surface is the best reflector of heat? |
|
[ ] |
Red surface |
[ ] |
Black surface |
[ ] |
Blue surface |
[x] |
Shiny white surface |
|
|