| 1. 1 pts. |
A metal rod covered in wax was set up in an experiment as shown in the diagram below. The end of the rod was heated as shown. What will the wax look like after a few minutes?
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| 2. 1 pts. |
Which of the following list would be the best conductor of heat? | |
| A. | wood | |
| B. | glass | |
| C. | metal | |
| D. | plastic | |
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| 3. 1 pts. |
Which of the following list is a poor conductor of heat? | |
| A. | air | |
| B. | iron | |
| C. | copper | |
| D. | aluminium | |
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| 4. 1 pts. |
The diagram below shows an experiment into heat conduction. From the results what is rod X made from?
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| A. | iron | ||
| B. | glass | ||
| C. | copper | ||
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| 5. 1 pts. |
The diagram below shows an experiment investigating heat conduction. From the results, what is rod Y made from?
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| A. | iron | ||
| B. | glass | ||
| C. | copper | ||
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| 6. 1 pts. |
Heat moves by convection currents in | |
| A. | wood | |
| B. | glass | |
| C. | water | |
| D. | copper | |
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| 7. 1 pts. |
Heat cannot move by convection currents in | |
| A. | oil | |
| B. | milk | |
| C. | wood | |
| D. | syrup | |
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| 8. 1 pts. |
Two smoking tapers are held above the beaker as shown in the diagram. Which of the drawings below shows correctly how the smoke will move?
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| 9. 1 pts. |
A beaker was heated below the colured crystal as shown in the diagram. Whioch diagram shows how the colour will move?
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| 10. 1 pts. |
A glider can fly for hours using
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| A. | a dull metal surface | ||
| B. | conduction currents in the air | ||
| C. | convection currents in the air | ||
| D. | radiation currents in the air | ||
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| 11. 1 pts. |
In the drawing below, of a hot water immersion heater, where is the hottest water?
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| A. | A | ||
| B. | B | ||
| C. | C | ||
| D. | D | ||
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| 12. 1 pts. |
Look at the drawing below of two matches. Match X lights before match Y because
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| A. | air does not conduct heat | ||
| B. | metal does not conduct heat | ||
| C. | metal is a better conductor of heat than air | ||
| D. | metal is a poorer conductor of heat than air | ||
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| 13. 1 pts. |
A man fell overboard from a yacht. His friend rescued him from the sea 20 minutes later. The sea temperature was 8 C and the air temperature was only 4 C, yet the man in the sea developed hypothermia, but the man in the yacht did not, despite them both being dressed the same. The man in the sea developed hypothermia because | |
| A. | he swallowed some seawater | |
| B. | air is a better conductor of heat than water | |
| C. | the sea convected his heat away | |
| D. | water is a better conductor of heat than air | |
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| 14. 1 pts. |
The same volume of water is put into the two cups in the diagram below. Which line in the table shows the temperatures after 10 minutes?
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| A. | A | ||
| B. | B | ||
| C. | C | ||
| D. | D | ||
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| 15. 1 pts. |
The coffee in a coffe cup with a lid on, stays hotter longer because | |
| A. | the lid stops heat conducting out of the cup | |
| B. | the lid stops heat convecting out of the cup | |
| C. | you can fill a coffee cup higher when the lid is on it | |
| D. | the lid keeps out the cold | |
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