Test - Thermal Energy/ Work and Power

Question 1

The diagram to the right shows four locations in a temperature field. The temperature of each location is given in degrees Celsius. Heat energy will normally flow from.

Answer 1

C to B. Which is 35 degrees Celsius to 20 degrees Celsius

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Question 2

Plastic is an example of this.

Answer 2

Insulator

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Question 3

When an object absorbs energy, the change in temperature will be

Answer 3

positive

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Question 4

When oil is burned to produce electricity, the electrical energy produced is less than the potential energy in the oil. Which best explains this observation?

Answer 4

Some of the potential energy in oil is converted into forms of energy other than electricity.
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Question 5

Which pictures show the same type of thermal energy transfer?

Answer 5

A and C. A- oven and a skillet and C which is an iron and an ironing board.
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Question 6

The rate at which work is done is ____.

Answer 6

power

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