Convection and conduction

1.

Multiple Choice

30 sec

1 pt

A metal spoon heating up in a bowl of hot soup

Conduction

Convection

Radiation

2.

Multiple Choice

30 sec

1 pt

Water boiling in a pot

Conduction

Convection

Radiation

3.

Multiple Choice

1 min

1 pt

Rising warm air currents is an example of?

Radiation

Conduction

Convection

4.

Multiple Choice

45 sec

1 pt

What causes the circulation of air in the atmosphere?

Air in the atmosphere is heated by the sun and sinks to the ground.

The ground is heated by the sun and then heats the air, causing the air to rise.

Air loses heat to the ground and then rises upward to obtain more energy.

The sun heats the clouds which forces the cooler air to move away and sink.

5.

Multiple Choice

2 mins

1 pt

What is the definition of CONVECTION

When heat transfers through waves.

When heat transfers from objects that are touching.

a hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

Heat traveling from the sun

6.

Multiple Choice

2 mins

1 pt

What is the definition of CONDUCTION?

When heat is transferred from objects like rays of light or electromagnetically.

a hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

When heat transfers from objects that are touching.

When heat transfers through the heater or AC in your house.

7.

Multiple Choice

1 min

1 pt

Which of the following is an example of convection?

A hair dryer is drying up your hair.

When the AC or heater changes the temperature.

When a car engine turns hot after being turned on.

When you are making soup and the water is rising and lowering.

8.

Multiple Choice

1 min

1 pt

Walking on the warm sand sand with your bare feet demonstrates this type of heat transfer.

conduction

convection

radiation

9.

Multiple Choice

30 sec

1 pt

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

conduction

convection

radiation

10.

Multiple Choice

30 sec

1 pt

How does heat move?

In many directions

from warm places to cooler places

from cold places to warm places

Both B and C

11.

Multiple Choice

30 sec

1 pt

If you burn your hand on the handle of a hot pot, heat was transferred to your skin by

conduction

convection

radiation

equilibrium

12.

Multiple Choice

30 sec

1 pt

What type of energy transfer occurs when hot water flows through cool water?

insulation

radiation

conduction

convection

13.

Multiple Choice

30 sec

1 pt

What type of heat transfer is occurring in the picture below? (the pan is touching the burner)

conduction

convection

radiation

insulation

14.

Multiple Choice

30 sec

1 pt

What type of thermal energy transfer is number 1 pointing to?

Convection

Conduction

Radiation

Insulation

15.

Multiple Choice

30 sec

1 pt

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

Convection

Conduction

Radiation

16.

Multiple Choice

30 sec

1 pt

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

Convection

Conduction

Radiation

17.

Multiple Choice

30 sec

1 pt

In a swimming pool, the water near the surface is slightly warmer. The warm water rises because of

Convection

Conduction

Radiation

18.

Multiple Choice

30 sec

1 pt

A fireman feels a door and it is hot. Why does his hand feel hot?

Convection

Conduction

Radiation

19.

Multiple Choice

30 sec

1 pt

As you hold pieces of ice, they begin to melt from the warmth of you hand on them. This is because of

Convection

Conduction

Radiation

20.

Multiple Select

30 sec

1 pt

Convection can occur in...

Liquids

Solids

Gases

All of the above

21.

Multiple Choice

30 sec

1 pt

When particles of a liquid are heated they become

More Dense

Less Dense

Stay the same Density

I Dont Know

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