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Home > Science > AQA Science Topics (Pre-2011) > Energy and Electricity > Heat transfer and efficiency

Science

Energy and Electricity

Heat transfer and efficiency - Test

1.

What substances can convection happen in?

2.

What type of radiation do all hot objects emit?

3.

What are the best absorbers of thermal radiation?

4.

What are the worst emitters of thermal radiation?

5.

How does heat pass through a single pane of window glass?

6.

What is the useful energy transfer in a radio?

7.

What form of energy is stored in a battery?

8.

An electric lamp is 25% efficient. If it receives 100 J per second of electrical energy, how much of this is transferred as light energy?