Convection Currents

If differences in air pressure produce winds, what can you conclude about temperature and air pressure based on the figure?

• As warm air rises, it creates an area of lower pressure, and cooler air flows in as wind
• Warm air is denser than cold air is, creating an area of high pressure the produces wind.
• Winds flow from areas of low pressure to areas high pressure when temperature is warmer
• Air pressure decreases at night because temperature is lower, producing land and sea breezes

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NGSS.MS-ESS2-6

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What does heat do when convection currents are moving?

• Sinks

• Rises

• Stays in place

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NGSS.MS-ESS2-6

Which picture shows material that is more dense?

• The picture of the left

• The picture on the right

When do particles move faster?

• In hot water

• In cold water

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Why does ice float?

• Due to convection currents

• It is more dense than water.

• It is less dense than water.

What causes convection current in the Earth?

• The uneven heating on each layer inside the Earth.

• The crusts outer layer.

• The temperatures we feel outside.

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NGSS.MS-ESS2-6

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What is an example of a convection current?

• Touching a hot spoon that was in a soup bowl.

• Feeling the suns rays on a nice summer day.

• Touching an iron skillet after cooking and feeling the heat.

• Movement of gas in a hot air balloon.

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NGSS.MS-ESS2-6

In convection, WARM air

• Rises
• Sinks

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In convection, COOL air

• Rises
• Sinks

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Energy for convection on the Earth comes from...

• The sun
• The moon
• Solar winds
• The ocean

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NGSS.MS-ESS2-6

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