Chapter # 9 Transfer of Heat

Transfer of Heat

Quiz

 

1. What is the process by which heat is transferred through direct contact of molecules?
   1.   Conduction
   2.   Convection
   3.   Radiation
   4.   Insulation
2. In which of the following materials does conduction occur most effectively?
   1.   Air
   2.   Water
   3.   Metal
   4.   Plastic
3. Which method of heat transfer involves the movement of fluid?
   1.   Conduction
   2.   Convection
   3.   Radiation
   4.   Reflection
4. Which of the following is an example of heat transfer by radiation?
   1.   Heating a pot on a stove
   2.   Warm air rising from a heater
   3.   Sunlight warming the Earth
   4.   A hot cup warming your hands
5. Which type of heat transfer does not require a medium?
   1.   Conduction
   2.   Convection
   3.   Radiation
   4.   Conduction and Convection
6. Which of the following processes is primarily responsible for the transfer of heat in liquids and gases?
   1.   Conduction
   2.   Convection
   3.   Radiation
   4.   Sublimation
7. What property of metals makes them good conductors of heat?
   1.   High density
   2.   Free electrons
   3.   High specific heat capacity
   4.   High melting point
8. What happens to the molecules of a substance when it is heated?
   1.   They move slower
   2.   They move faster
   3.   They stop moving
   4.   They move in a fixed position
9. Which material is commonly used as an insulator due to its poor thermal conductivity?
   1.   Aluminum
   2.   Copper
   3.   Styrofoam
   4.   Iron
10. In which of the following situations does convection not occur?
    1.   Boiling water in a pot
    2.   Heating a room with a radiator
    3.   Warming your hands over a fire
    4.   Melting ice in water