UNIT 5 Review for 3 weeks Assessment

1. Hot coffee is stirred with a spoon, the spoon gets hot due to _______________.

• Conduction

• Convection

• Radiation

• All of the above

A chair is placed several feet from a fire in a fireplace. The fireplace has a glass screen. The side of the chair facing the fireplace gets warm because of_______________.

• Conduction

• Convection

• Radiation

• All of the above

A beaker with water is placed on a hot plate to increase the temperature of the water.

What forms of energy transfer occur while the hot plate is turned on?

• Radiation occurs where the hot plate touches the beaker. Convection occurs in the movement of the water.

• Conduction occurs where the hot plate touches the beaker.

  Radiation occurs in the movement of the water.

• Convection occurs where the hot plate touches the beaker. Conduction occurs in the movement of the water.

• Conduction occurs where the hot plate touches the beaker. Convection occurs in the movement of the water.

A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the liquid. The globs rise due to _______________.

• Conduction

• Convection

• Radiation

• All of the above.

Near the ceiling of a room the air is warmer. The warm air rises because of _______________.

• Conduction

• Convection

• Radiation

• All of the above.

Gas %of Volume

N₂ 78

O₂ 21

Ar . .9

CO₂ .04

Ne .0018

He .00052

CH₄ .00017

Kr .00011

H₂ .00006

Using the information above, which gases make up the majority of the Earth's atmosphere?

• CO₂ and O₂

• CO₂ and N₂

• O₂ and N₂

• CH₄ and O₂

A college student holds the back of his hand near an iron to see if it is hot. Heat is transferred to his hand by _______________.

• Conduction

• Convection

• Radiation

• All of the above.

Which of these actions, on their own, will cause ice to change to water?

• Adding heat to the ice.

• Crushing the ice.

• Adding sand to the ice.

• Removing heat from the ice.

A student is standing with their back facing a campfire. The student notices that their back is much warmer than their chest. They know that thermal energy is being transferred from the fire and that this method of energy transfer can happen even if no air is present.

This method of energy transfer is —

• Conduction

• Convection

• Radiation

• All of the above.

A heater is placed under one corner of a water bed mattress. Warm water moves throughout the mattress because of _______________.

• Conduction

• Convection

• Radiation

• All of the above.