Check your score,class 7 ch- Heat energy

Class 7 Quiz: Heat Transfer

1. Heat transfer in a metal rod is an example of:

Conduction Convection Radiation Evaporation

2. Warm air rising near a heater demonstrates:

Conduction Convection Radiation Condensation

3. The transfer of heat without a medium is called:

Conduction Convection Radiation Evaporation

4. Which material is the best conductor of heat?

Wood Copper Glass Plastic

5. Which of the following is an example of convection?

Boiling water A metal rod heating up Sunlight heating the Earth Melting ice

6. The boiling point of water in Kelvin is:

100K 373K 273K 212K

7. Which method is used to keep ice from melting in an icebox?

Convection Insulation Radiation Conduction

8. Which of the following involves radiation?

Sunlight warming your face Boiling water Touching a hot stove Ice melting

9. Which process is fastest for heat transfer?

Conduction Convection Radiation Evaporation

10. The freezing point of water in Kelvin is:

273K 100K 0K 212K