7Th Grade Topic # 2 Quiz B

7th grade topic # 2 Quiz B

Physical Science –Thermal Energy Transfer

____1. Thermal energy naturally travels as heat from _____.

A.a shiny material to a dull one.B. a light-colored material to a dark-colored one.

C. a warmer material to a cooler one.D. a cooler material to a warmer one.

____2. Which term is defined as a measure of the average kinetic energy of the particles in a sample?

A. temperature B. thermal energyC. pressure D. chemical energy

_____3. Which of the following best explains why a hot air balloon rises?

A. The heated particles become more dense, the pressure inside increases causing the balloon to rise.

B. The cooler particles become less dense, move faster, and push the balloon higher.

C. The heated particles become less dense, move faster, causing the balloon to rise.

D. The cooler particles become more dense and rise, causing the hotter particles to sink.

_____4. Imagine that you have just made a fresh apple pie that you set on your kitchen table. When you took it out of the stove, you couldn’t even hold it in your hand. Now, several minutes later, you are able to cut a slice and eat it.

The apple pie has cooled, the question now is where has the heat gone? Which the following is most likely to have happened:

A. The heat stayed in the pie.

B. The heat evaporated to the table and floor.

C. The heat transferred to the floor.

D. The heat transferred to the table and the air.

____5. What method of heat transfer allows the Sun’s heat energy to reach Earth through the vacuum of space?

A. condensation B. conduction C. convection D. radiation

_____6. Four containers of water with different temperatures are placed on a table as shown below. The temperature of the room is 25°C. After 4 hours, which beaker of water will have transferred the most heat energy with the environment?

A. Beaker WB. Beaker XC. Beaker YD. Beaker Z

_____7. Air freshener sprayed from a bottle spreads more easily in a warm room of 25°C than in a cool room of 15°C.

Which of the following correctly compares air freshener particles at 25°Cto those at 15°C?

A. At 25°C, they have more mass.B. At 25°C, they are moving faster.

C. At 25°C, they have less kinetic energy.D. At 25°C, they are decreasing in volume.

_____8. To check if the iron is hot, you place your hand near the iron and feel that it is warm without touching it. The reason that you can feel the heat without touching it is because of heat transfer by ______.

A. radiation. B. evaporationC. conduction. D. convection

____9. Which system shows a transformation from chemical to electrical and light energy?

A.A car battery causes the headlights to shine.

B.A candle burns and lights up the room.

C.A display of fireworks in the night sky.

D.An avalanche rolls down a steep mountain.

_____10. Which material is a poor thermal insulator?

A.AirB. PlasticC. AluminumD. Feathers