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-ESS2-5

NGSS.MS-ESS2-6

What does heat do when convection currents are moving?

• Sinks

• Rises

• Stays in place

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.

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

The cycle that powers the ocean currents, weather, and tectonic plates it called

• conduction current

• radiation

• condition current

• convection current

Tags

NGSS.MS-ESS2-6

Which of the following best describes convection currents in the atmosphere?

• The movement of air due to differences in air pressure.

• The movement of air due to differences in temperature.

• The movement of air due to the Earth's rotation.

• The movement of air due to gravitational pull.

Tags

NGSS.MS-ESS2-6

Why does cold water sink in a convection current?

• Less dense

• more dense

• Less humid

• More humid

Tags

NGSS.MS-ESS2-6

Warm air rises and the cool air sinks demonstrates this type of heat transfer. 

• conduction

• convection

• radiation

• Insolation 

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which of the following is an example of convection in everyday life?

• Boiling water in a pot.

• Heating a metal rod in a flame.

• Sunlight warming the Earth's surface.

• Using a microwave to heat food.

How does heat transfer by convection occur?

• Heat is transferred through empty space.

• Heat is transferred through the vibration of particles in a solid.

• Heat is transferred by the movement of heated fluid from one place to another.

• Heat is transferred by the emission of infrared radiation.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4