Choose the correct alternative.

1. What material are thermal resistors made out of?

plastic
wood
porcelain
metal
glass

2. Which of the following devices contains a thermal resistor?

refrigerator
candle
battery
hairdryer
television

3. Which of the following devices does not contain a thermal resistor?

toaster
vacuum cleaner
electric stove
hairdryer
electric iron

4. What makes the thermal resistor heat up?

fire
movement
radiation
friction
electricity

5. What is the device that measures the temperature of a thermal resistor called?

ceramic fuse
automatic fuse
thermostat
gyroscope
byrocrat