Test Review

Multiple-choice (11)

EOG Questions (10)

Short Answer (2 points each)

1. Describe what happens to the potential energy and the kinetic energy of a ball as it rolls down a hill from a position of rest at the top of the hill. 

2. Infrared waves have wavelengths that are longer than those of visible light. Compare the frequency and energy of infrared rays to the frequency and energy of visible light.

Essay (2 points each)

Heat is constantly being transferred between two objects, or parts of two objects.

1. Part A Describe three methods of heat transfer and give an example of each type of transfer.

2. Part B Explain the direction that thermal energy naturally flows in. 

EOG Review

1.  Which is most responsible for the uneven heating of the air in the atmosphere?

a.  radiation

b. convection

c.  conduction

d.  condensation

2.     A pot is heated on a stove. Which process causes the metal handle of the pot to also become hot?

a.  combustion

b.  convection

c.  radiation

d. conduction 

3.  Which is the best example of the transfer of heat by radiation?

a.  water boiling

b.  ice melting

c.  a hot air balloon rising

d. a lightbulb glowing

4.  Bill stands in a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. Which process causes this difference in temperature?

a. convection

b.  evaporation

c.  radiation

d.  conduction

5.  People sitting around a campfire are able to feel the heat from the fire. How are the people able to feel the heat from the fire without touching the fire?

a. The heat from the fire travels through the ground and heats the ground around the people.

b. The heat from the fire is conducted through air molecules to the people.

c. The heat from the fire rises in the air and then settles around the people.

d. The heat from the fire radiates from the fire to the people.

6. Stirring a cup of hot tea causes a metal spoon to get warm. Which statement best explains why the spoon gets warm?

a.  Heat energy transfers from the metal spoon to the hot liquid.

b. Heat energy transfers from the hot tea to the spoon.

c.  Heat energy transfers from the air to the hot liquid, and then to the spoon.

d.  Heat energy transfers from the hot liquid to the cup, and then to the spoon.

7. What happens to metal railroad tracks during the heat of a summer day?

a.  decrease in weight

b.  increase in weight

c.  decrease in length

d. increase in length

8.  Jason fills a glass container completely with water and screws the lid on tightly. He places the container in a freezer. Which will most likely result?

a.  The container will prevent the water from freezing.

b.  The water will freeze and take up less space in the container.

c.  The water in the container will expand when it freezes and cause the container to crack.

d.  The container will absorb heat from the water, causing it to crack.

9.  Which material is best used to keep cold drinks from getting warm too quickly?

a.  glass, because it is a good conductor of heat

b. foam, because it is a poor conductor of heat

c.  metal, because it radiates heat

d.  paper, because it conducts heat

10. Why are liquids sometimes used in a thermometer?

a.  because most liquids condense when heated and evaporate when cooled

b.  because most liquids melt when heated and freeze when cooled

c.  because most liquids contract when heated and expand when cooled

d. because most liquids expand when heated and contract when cooled