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