Convection and Convection Currents

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 pressure

• Mass and density

The main reason that we have currents in the ocean and air is

• the sun heats the air and ocean evenly everywhere
• the heat inside the earth heats the ocean and the ocean heats the air
• the sun cannot heat both the air and water, so one must heat the other
• the sun heats air and water more at the equator because it receives more direct sunlight

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

Warm air is __________ dense than cold air and rises creating convection currents.

• more
• less

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Near the ceiling of a room the air is warmer.  The warm air rises because of

• conduction
• convection
• radiation

Tags

NGSS.MS-ESS2-5

In convection, WARM air

• Rises
• Sinks

In convection, COOL air

• Rises
• Sinks

What causes the Coriolis effect?

• The sun
• The Earth's rotation
• The moon
• The ocean

Tags

NGSS.MS-ESS2-6

Do sea breezes typically happen during the day or night?

• Day
• Night

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6