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| 1.
For something to burn, you need fuel and air. Which part of air is needed to sustain a fire? |
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| 2.
For a fire to start, you need a third factor beyond air and fuel - which one? |
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| 3.
Most fires release smoke which tends to rise upwards. Why does it do that? |
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| 4.
Sometimes combustion can even take place without air. Why is this possible? |
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| 5.
If a particularly fast combustion takes place in a tightly enclosed space, which of the following is often the result? |
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| 6.
One visible sign of combustion is a flame. Flames can have many different colors, but which of these is the hottest? (It is the color that you would most associate with cold.) |
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| 7.
Combustion also takes place in many everyday applications. Which of the following does NOT rely on combustion to function? |
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| 8.
Sometimes engineers speak of an "internal combustion engine". This is a pretty big term for something you have surely seen before - what could they be talking about? |
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| 9.
Fire extinguishers are used to stop an unwanted combustion - a damaging fire. Which of these would NOT be of use in fighting small fires? |
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| 10.
If not controlled, fire is dangerous and kills people every day. What is the most common cause of death in fires (it is NOT burns)? |
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