Chapter 17 Practice Test: Heat Energy

1.    Hot air furnaces and hot water heaters transfer their heat by  (1.) sublimation  
       (2.) convection    (3.) insulation  (4.) condensation

2.    A temperature of 0 K is  (1.) the freezing point of water.  (2.) the freezing point of 
       carbon dioxide. (3.) absolute zero.   (4.) equal to a temperature of 273°C.

3.    The measure of the average kinetic energy of the particles in a substance is its
        (1.) specific heat.   (2.) temperature.   (3.) thermal energy. (4.) melting point.

4.    The movement of water being heated in a container is chiefly due to
       (1.) conduction.   (2.) convection.  (3.) radiation.   (4.) condensation.

5.    On a hot day, the chief reason beach sand is hotter than the ocean water because 
       of differences in  (1.) texture.  (2.) conductivity.  (3.) color.  (4.) specific heat.

6.    Which is not a method of heat transfer?   (1.) conduction   (2.) insulation (3.) convection
        (4.) radiation

7.    Which does not require the presence of particles of matter?
        (1.) radiation   (2.) conduction  (3.) convection   (4.) combustion

8.     In order for radiant energy to change to thermal energy, it must be
        (1.) reflected   (2.) conducted   (3.) convected  (4.) absorbed

9.     Which material would best reflect radiant energy?   (1.) light-colored materials
         (2.) dull materials   (3.) dark-colored materials   (4.) transparent materials

10.   Which are usually the best conductors of heat?   (1.) gases   (2.) metals
         (3.) plastics   (4.) liquids

11.    The most important way thermal energy is transferred in fluids is by
          (1.) conduction   (2.) convection   (3.) radiation   (4.) combustion

12.   ______ is the transfer of energy in the form of waves.  (1.) Conduction   (2.) Convection
        (3.) Radiation   (4.) Insulation

13.   A hot water radiator is a device that heats the air near it by  (1.) conduction   (2.) sublimation
        (3.)  radiation   (4.) insulation

14.   The point at which all particle motion stops is called (1.) freezing point
        (2.) zero  (3.) absolute zero   (4.) sublimation point

15.   Energy transfer by electromagnetic waves is called  (1.) radiation
        (2.) nuclear energy   (3.) solar energy   (4.) convection

16.   The transfer of heat energy through liquids or gases is known as  (1.) conduction
        (2.) convection  (3.) radiation  (4.) osmosis

17.   The transfer of heat energy through empty space is known as  (1.) conduction
        (2.) convection  (3.) radiation  (4.) osmosis

18.   The 80 cal/g required to change 1 gram solid ice to liquid water at 0 °C, is called its
        (1.) heat of vaporization  (2.) heat of fusion  (3.) boiling point  (4.) condensation value

19.   The 540 cal/g required to change 1 gram of liquid water to steam at 100 °C, is called its
        (1.) heat of vaporization  (2.) heat of fusion  (3.) boiling point  (4.) condensation value

Short Answer Section

1..  The diagram at the right shows a pot of water being heated by a fire source at its base, as well as the convection currents within the water in the pot. Completely explain how temperature and density differences within the water allow the cycling of the water in this pot by convection.

2.   Explain why it is easier for thermal conduction to occur in a solid than in a liquid or a gas.

3.   It requires nearly 7 times as much energy to vaporize water than it does to melt an equal mass
of this ice to water.    What is a major significance of this observation?

Click here to view some correct answers to this test

Send comments about this test to jbuckley@ekcsk12.org