1. What material are thermal resistors made of?

plastic
wood
porcelain
metal
glass

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

fridge
candle
battery
hairdryer
television

3. What causes the thermal resistor of an electric oven to heat up?

fire
conduction
radiation
friction
electricity

4. What is the name of the device that regulates the function of a thermal resistor?

automatic fuse
ceramic fuse
thermostat
gyroscope
thermoscope

5. Which of the following materials is a fossil fuel?

wood
oil
nuclear power
electricity
alcohol

6. What is a material that prevents heat from conducting to the environment called?

filling
protectant
insulant
coolant
thermos

7. How does heat move from a central heating unit to the rooms of a building?

through the air
through water or steam pipes
through electric cables
through thermal resistors
through an insulant

8. What should you do to put out a fire in the kitchen?

pour water on it
let smoke out of the room
cover it with a fire blanket
close the kitchen doors
close the stove