Answer the following questions to the best of your ability.

If you are right, you get 2 points. A wrong choice takes away 2 points. Not answering gives you 0 points. The maximum amount of points is 20. Remember to save your answers!

1. Combustion is a process where oxygen reacts with another substance.
I cannot say.
That is correct.
That is incorrect.

2. Rust is an example of slow combustion.
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That is correct.
That is incorrect.

3. Rapid combustion can take the form of an explosion.
I cannot say.
That is correct.
That is incorrect.

4. The heat of the Sun is a result of combustion.
I cannot say.
That is correct.
That is incorrect.

5. Nuclear power plants produce heat in fusion reactions.
I cannot say.
That is correct.
That is incorrect.

6. Electricity can only travel through a closed circuit.
I cannot say.
That is correct.
That is incorrect.

7. A thermal resistor is the heat-producing part of an electric circuit.
I cannot say.
That is correct.
That is incorrect.

8. Insulants can be used to produce heat.
I cannot say.
That is correct.
That is incorrect.

9. Heat can move from one place to another by three different ways: transportation, conduction and radiation.
I cannot say.
That is correct.
That is incorrect.

10. Every household should have a fire alarm and a fire extinguisher.
I cannot say.
That is correct.
That is incorrect.