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

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

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

• When they gain energy by heat

• In dense solids

Why does convection currents develop in the mantle layer?

• Due to high pressure in the inner core

• It is due to high temperature of the outer core

• It is due to heat transfer from hotter outer core rising into the mantle layer

• It is due to the Earth's crust sinking into the mantle layer

Heat transfer through convection does not happen in...

• solids.

• gases

• liquids

• molten lava

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

In convection, WARM air

• Rises
• Sinks

Tags

NGSS.MS-ESS2-6

In convection, COOL air

• Rises
• Sinks

Tags

NGSS.MS-ESS2-6

Energy for convection on the Earth comes from...

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

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6