Convection

Question 1

Where could convection currents form?

Revolt · Accepted Answer

in the atmosphere

Question 2

Which is required for convection to occur?

Revolt · Accepted Answer

a heat source

Question 3

The diagram shows the motion of a group of water molecules over a heat source.

Revolt · Accepted Answer

They are farther apart.

Question 4

Water is boiling in a clear pot, as shown in the picture.

Revolt · Accepted Answer

They are more spread out and moving faster than those at the surface.

Question 5

Which best describes the shape of a convection current?

Revolt · Accepted Answer

circular

Question 6

Which area of Earth is most similar to the sun’s convection zone?

Revolt · Accepted Answer

the mantle

Question 7

A student places a large pot of cold water on a stove and heats it for one minute. Then she takes the pot of water off the burner and places it on the counter. Which best describes the convection currents?

Revolt · Accepted Answer

After the stove is turned off, convection currents continue to transfer energy through the water for a period of time.

Question 8

This image shows how magma moves through the Earth’s mantle.

Revolt · Accepted Answer

The magma is heated and becomes less dense by the core moving it toward the crust.

Question 9

Yami pours powdered cocoa mix into milk and stirs it. Then she microwaves the mixture for three minutes. When she takes the cup out, the handle is very warm. Steam rises from the cup, so she blows it before taking a sip. In which part of this scenario can convection be best observed?

Revolt · Accepted Answer

rising steam from the cup of cocoa

Question 10

The lava lamp has a light bulb as a heat source at its base. The lamp contains a colored, waxy fluid that can be observed moving in clumps through a clear liquid.

Revolt · Accepted Answer

density

Convection Answers

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