Convection

Earth Systems, Structure, and Processes

Day 14 Convecation

Multiple Choice

Which of these is Not a way you see changes in weather?

• Air Movement

• Sun's Radiation

• Formation of Clouds

• Precipitation

How do you see changes in weather

-Air movement (wind)
-Formation of Clouds
-Precipitation

Multiple Choice

Movement does not happen on their own, what is needed to make movement happen?

• Energy

• A Push

• A Pull

• A force

Multiple Choice

Energy is needed to make movement happen. The energy source that causes air movement is?

• The tides

• The clouds

• The Sun

• The ocean

Energy that causes air movement comes from the sun

1. The uneven heating of the earth (equator = direct, poles = indirect)
2.The tilt/ angle of the Earth and its always moving southern hemisphere gets more sun
3. Rotation of the Earth (day / night)
4.Some surfaces absorb heat better than others (dark surfaces vs bright surfaces)

Multiple Choice

Which of these describes convection

• Moving from high pressure to low pressure

• Warm raises, cool sinks

• Warm expanse, cool condenses

• All of the above

Multiple Choice

Convection is warm air rises, cool air sinks. Which weather effects is caused by convection?

• Clouds

• Winds

• Fronts

• All the above

By transferring heat from one place to another convection creates

-Clouds
-Winds
-Fronts, caused by air movement

Explain this image to you table buddy.

-What is happening in this image?
-How is it happening?

Multiple Choice

Which description below best describes the last image?

• Heat rises during the day and sinks at night

• Some surfaces absorb heat better than others

• Direct radiation is on the right, the indirect radiation is on the left

• Warm air expands the cool air condenses

Some surfaces absorbs the sun's radiation better than others

Over the warm surface emits heat warming the air. Causing it to rise. The air over the cool surface does not receive heat so it sinks and condenses. This makes it moved towards the lower air pressure.

Explain this image to you table buddy.

-What is happening in this image?
-How is it happening?

Multiple Choice

Which description below best describes the last image?

• The air over land is warmer than the air over water during the day, and switches at night

• High pressure is moving to low, low pressure is moving to high

• The land reflects the sun's radiation and the water absorbs it

• The circles are moving in opposite directions.

During the day the sun heats all surfaces. The land reflects the heat to the air. So the air to be warmer than the water

During the night the sun is not heating the surface. The land can no longer heat the air causing the air to cool over the land. The water absorbed the sun's radiation and now emits the air causing the air to rise over the water.

Explain this image to you table buddy.

-What is happening in this image? -How is it happening?

Multiple Choice

Which description below best describes the last image?

• The Earth is flat

• It isa funny looking football field

• Sun's radiation heats the equator indirectly and directly at the poles

• Cold air is moving towards the center and the warm air is moving up / away

They have the latitude lines labeled. It show the what the land look like at each latitude.

There are cold (high pressure) lines moving towards the center equator. There are warm (low pressure) lines being forces up and away from the equator.

Match

Match the reason of the Earth heating unevenly with what actually is happening

• Direct and indirect sunlight

• Rotation of the Earth

• Angle of the Earth

• Surfaces heat unevenly

Equator gets more than the poles

Day and night

south half gets more sun than north

Absorb (dark) and reflect (bright)

• Equator gets more than the poles

• Day and night

• south half gets more sun than north

• Absorb (dark) and reflect (bright)

Exit Ticket: Create a simile or metaphor about convection in nature

Your table buddy can help you. Candy for the best two.