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Convection Answers

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How is thermal energy transferred during convection?

A
by physical contact
B
by electromagnetic waves
C
by movement in fluids
D
by mechanical waves
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The speed of the molecules [___].

A
increases
B
decreases
C
stays the same
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The density of the fluid [___].

A
increases
B
decreases
C
stays the same
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The fluid [___].

A
rises
B
sinks
C
doesn’t move
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Label A: [___]

A
Warm fluid rises
B
Warm fluid sinks
C
Cool fluid rises
D
Cool fluid sinks
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Label B: [___]

A
Warm fluid rises
B
Warm fluid sinks
C
Cool fluid rises
D
Cool fluid sinks
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Label C: [___]

A
Conduction current
B
Convection current
C
Magma current
D
Crust current
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In a lava lamp, a waxy substance rises and falls repeatedly. What causes the waxy substance to rise? Check all that apply.

A
The waxy substance is cold.
B
The waxy substance is warm.
C
The waxy substance is less dense than the surrounding liquid.
D
The waxy substance is more dense than the surrounding liquid.
E
Convection is occurring.
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What happens at night?

A
Cool air over the ocean moves onshore.
B
Cool air over the land moves offshore.
C
Warm air over the ocean moves onshore.
D
Warm air over the land moves offshore.
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Which statements best describe convection? Check all that apply.Convection occurs in solids.Convection occurs in liquids and gases.Convection transfers thermal energy.Convection transfers potential energy.Convection occurs until all of the fluid is at the same temperature.Convection occurs only one time, no matter the temperature.

A
Convection occurs in solids.
B
Convection occurs in liquids and gases.
C
Convection transfers thermal energy.
D
Convection transfers potential energy.
E
Convection occurs until all of the fluid is at the same temperature.
F
Convection occurs only one time, no matter the temperature.
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Which describes the motion in a convection current?

A
horizontal motion only
B
vertical motion only
C
linear motion
D
circular motion
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Use the drop-down menus to identify each labeled part of the diagram.

Answers:
Label A::Cool fluid sinks
Label B::Warm fluid rises
Label C::Convection current

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Convection Answers — WA-Physical Science B