Unit 4 - Convection Currents

What does heat do when convection currents are moving?

• Sinks

• Rises

• Stays in place

Tags

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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NGSS.MS-PS1-4

NGSS.MS-PS3-4

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.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-6

Can convection currents occur in a solid?

• No.

  just in a liquid and gas.

• Yes.

  In a solid, liquid, and gas.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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.

Tags

NGSS.MS-ESS2-6

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

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

At the seashore late in the afternoon on a hot day, a person often feels a strong breeze coming from the ocean because...

• the pounding waves generate air currents
• warm air over the ocean rushes in to replace the cool air that rises over the land
• the heavy, cool air over the ocean rushes in to replace the warm air that rises over the land
• there are no clouds to block the wind coming in from the ocean

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Heat transfer by convection is caused by differences in what two things:

• Thickness and material

• Weight and electricity

• Temperature and density

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which one heats and cools fastest?

• land
• sea
• both are the same rate
• air