| 1. 1 pt(s). |
Heat travels well by radiation through | |
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A. | wood |
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B. | steel |
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C. | a vacuum |
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D. | aluminium |
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| 2. 1 pt(s). |
Heat is given out best by a surface which is | |
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A. | red |
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B. | black |
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C. | white |
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D. | yellow |
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| 3. 1 pt(s). |
Heat is absorbed best by a surface which is | |
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A. | red |
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B. | black |
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C. | white |
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D. | yellow |
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| 4. 1 pt(s). |
Heat travels well by radiation through | |
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A. | air |
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B. | wood |
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C. | iron |
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D. | copper |
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| 5. 1 pt(s). |
How does heat come from the sun? | |
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A. | conduction |
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B. | convection |
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C. | radiation |
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| 6. 1 pt(s). |
When holding a snowball in your hand how does the heat flow from your hand? | |
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A. | conduction |
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B. | convection |
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C. | radiation |
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| 7. 1 pt(s). |
How does heat get to the bread when making toast? | |
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A. | conduction |
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B. | convection |
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C. | radiation |
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| 8. 1 pt(s). |
Some coins were left out in the sunshine. Which of the coins would get hot the quickest? | ||
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A. |
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B. |
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C. |
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D. |
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| 9. 1 pt(s). |
In the diagram below of an electric fire, which arrow shows a heat ray?
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A. | A | |
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B. | B | |
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C. | C | |
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D. | D | |
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| 10. 1 pt(s). |
Heat moves by convection currents in | |
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A. | air |
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B. | iron |
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C. | rubber |
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D. | plastic |
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| 11. 1 pt(s). |
How does heat flow from the electric iron to your clothes when you are ironging? | |
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A. | conduction |
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B. | convection |
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C. | radiation |
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| 12. 1 pt(s). |
Saucepan handles are made of wood because | |
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A. | wood is an attractive material |
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B. | wood is a poor conductor of heat, so doesn’t get hot |
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C. | wood is a good conductor of heat, so doesn’t get hot |
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D. | wood is cheap |
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| 13. 1 pt(s). |
Tar melts on the road on a very hot day because roads | |
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A. | are melted by the earth |
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B. | radiate heat to the sun |
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C. | absorb heat from the sun |
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D. | conduct heat into the earth |
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| 14. 1 pt(s). |
Two identical cars, one white and one black were parked in the sun. After a few hours the metalwork of the dark one was hot to the touch, but the white one was not. This is because | |
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A. | dark paint retains the heat |
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B. | white paint keeps the cold in |
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C. | dark paint absorbs heat better than white |
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D. | dark paint reflects heat better than white |
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| 15. 1 pt(s). |
Here are some statements about heat transfer. Which is correct | |
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A. | Radiation only occurs in a vacuum |
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B. | Radiation only occurs in a gas |
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C. | Convection occurs in a vacuum |
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D. | Convection only occurs in a liquid or a gas |
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E. | Convection only occurs in a solid |
