Global Winds and Coriolis Effect

​CLT

​Blue knights will name and diagram global wind belts.

Multiple Choice

The Coriolis Effect is caused by what?

• The wind blowing

• Earth's gravity pulling things down

• The rotation of the Earth

• The pull of the Moon

Multiple Choice

What causes wind?

• movement of air from high pressure to low pressure

• movement of air from low pressure to high pressure

Multiple Choice

What type of winds blow constantly, predictably, and over long distances?

• land breezes
• mountain breezes
• global winds

Multiple Choice

Uneven heating of Earth's surface by the sun causes which of these?

• wind patterns
• cloud formation
• volcanic activity
• nutrient cycling

​In your science notebook. Draw this, use the entire page. What are the numbers? Is it warmer at 30°N or 60°N?

Multiple Choice

What are the numbers that go up and down the globe?

• Latitude

• Longitude

• Just lines

• Nothing

Multiple Choice

What is usually colder 0° or 60°N

• 0° is usually colder

• 60°N is usually colder

Multiple Choice

In 60°S the S means what?

• It's in the Southern Hemisphere

• It's in the Northern Hemisphere

• It means nothing

• It is a unit for a temperature (Sellcius)

Multiple Choice

The Equator and 0° are the same thing.

• False

• True

Multiple Choice

Is 25°S or 35°S closer to the equator.

• 25°S

• 35°S

Multiple Choice

90° N is the

• Equator

• North Pole

• South Pole

Multiple Choice

90°S is the

• Equator

• North Pole

• South Pole

Multiple Choice

Which is usually warmer?

• 5°S

• 30°N

• 90°N

• 90°S

​Let's add to your diagram. Why isn't there just 1 cell? Which cells move counter clock wise? Which cells move clockwise? Why? Where is low pressure and high pressure?

Multiple Select

Which way does wind always blow?

• Low Pressure to High Pressure

• High Pressure to Low Pressure

• Warmer area to colder area

Multiple Choice

Which of the cells move in reverse from the rest of the cells?

• The cells between 0° and 30°

• The cells between 30° and 60°

• The cells between 60° and 90°

​Add these to your diagram. Where are forests and deserts, why?

Multiple Choice

Is 0°

• Forest

• Desert

Multiple Choice

0° is forest because...

• as the air rises it warms and warm air holds water

• as air rises it cools and cool air can't hold as much water as warm air

• As air rises it holds more water

Multiple Choice

Is 30°

• Forest

• Desert

Multiple Choice

Why is 30° latitude a desert?

• All of the moisture was rained out as the air rose at 0°

• As the air drops down it can't rain because of gravity

• The Coriolis effect at 30° causes a desert.

​Add this information to your diagram.

Multiple Choice

Which global wind moves from west to east and backwards or upside down?

• Trade winds

• Westerlies

• Polar Easterlies

Multiple Choice

Why do the winds move in curved patterns?

• Because of the rotation of the Earth around its axis

• Because of the revolution of the Earth around the sun.

• Because the air is less dense

• Because the air is denser

Multiple Choice

What is the curved pattern of global winds called?

• The Mr. Swallows Effect

• The Doppler Effect

• The Coriolis Effect

Multiple Choice

The following image shows the Earth's jet streams. In this picture, most of the United States lies in the yellow zone between the polar jet and the subtropical jet streams. The United States is marked with an X. Based on the directions in which air moves in the jet streams, how would you expect weather patterns in the United States to move?

• from east to west

• from south to north

• from west to east

• from north to south

Multiple Choice

A student wants to model the Coriolis effect. She spins a globe and then uses a marker to draw a line on it while it spins. She begins drawing near the North Pole and moves her hand directly toward the Equator.

Which diagram best represents the line drawn on the globe?

• W

• X

• Y

• Z

Multiple Choice

Why is the surface of the earth unevenly heated?

• When the sun’s energy is transferred to the earth’s surface, it hits the area around the north and south poles most directly, while hitting the area around the equator at an angle.

• When the sun’s energy is transferred to the earth’s surface, it hits the area around the equator most directly, while hitting the areas around the north and south poles at an angle.

• The earth’s surface is evenly heated.

• None of the above

Multiple Choice

Which answer choice correctly describes the movement of air on Earth?

• Warm air rises from the equator and moves toward the poles because it is less dense.

• Warm air rises from the equator and moves toward the poles because it is more dense.

• Warm air rises from the north and south poles, then sinks toward the equator because it is less dense.

• Warm air rises from the north and south poles, then sinks toward the equator because it is more dense.

Multiple Select

Which answer choice correctly describes a convection cell? ( 2 answers)

• Warm air rises, then cools and sinks.

• Cool air rises, then warms up and sinks.

• Warm air rises because its molecules are spread out (less dense).

• Warm air rises because its molecules are packed tightly together (more dense).

Multiple Select

Which answer choice correctly describes a

Hadley Convection Cell? (2 answers)

• The Hadley cell causes rainforests and

  deserts to form.

• The Hadley cell causes temperate deciduous

  forests to form.

• Warm air rises from the equator, cools, and sinks at about 30 degrees north and south of the equator.

• Warm air rises from 30 degrees north and south,

  cools, then sinks near the poles.

Multiple Choice

Which answer choice correctly describes convection cells?

• There are 2 major convection cells, one in the northern hemisphere and one in the southern hemisphere.

• There are 4 major convection cells due to the Coriolis effect.

• There are 5 major convection cells due to the Coriolis effect.

• There are 6 major convection cells, three above the equator, and three below the equator.

Multiple Choice

How do convection cells function?

• Warm air rises from the earth’s surface, cools in the atmosphere, and then sinks back to the earth’s surface.

• Cool air rises from the earth’s surface, warms up in the atmosphere, and then sinks back to the earth’s surface.

• Convection cells only occur above the equator

• Convection cells only occur below the equator.

Multiple Select

Students are demonstrating the movement of wind. In Step 1, they blow up a balloon, trying to make it as round as possible. In Step 2, they draw a line around the middle of the balloon to represent the equator. In step 3, one student spins the balloon. While the balloon spins, another student draws a line from the middle of the balloon to the top.

In which two ways can this model represent the Coriolis effect? ( 2 answers)

• Warm air rising causes cooler air to sink to the surface.

• Rotation of Earth causes the wind to appear to curve.

• Wind at the equator is denser than wind at the poles.

• Cool air flows faster than warmer air as it moves across Earth.

• The amount the wind appears to curve depends on the speed of Earth’s rotation.

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