E2 Unit 9.3 Atmospheric motions

Multiple Choice

It is because the air density in higher altitude (at the top of mountain) is

• higher.

• lower.

Multiple Choice

With lower density of air in higher altitude, the air pressure is

• higher.

• lower.

Draw

How does altitude relate to air pressure?

Circle the graph best describes the relationship.

Multiple Choice

What will happen when air is heated up?

• It expands and rises.

• It cools and contracts.

Multiple Choice

When air is heated and rises, the air pressure near to the ground level is

• higher.

• lower

Draw

How does temperature relate to air pressure?

Circle the graph best describes the relationship.

Multiple Choice

p.9 1998 CE Q26

• A

• B

• C

• D

Multiple Choice

p.21 2008 CE Q27

• A

• B

• C

• D

Multiple Choice

p.24 2009 CE Q43

• A

• B

• C

• D

What are the major pressure belts? How do they form?​

​How temperature and air movement affect the formation of pressure belts?

​part of it converges and strengthens equatorial low.

Refer to p.14

​How do pressure belts shift in summer and winter?

Formation of planetary wind system



Refer to p.13 again, show how wind moves between the pressure belts.

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2020 DBQ

Multiple Choice

What is X?

• trade wind

• westerlies

• polar easterlies

Multiple Choice

What is Y?

• trade wind

• westerlies

• polar easterlies

Explain the formation of wind X.

1. Trade winds are formed when winds blow from _______ to _____.

2. They form _________ trade winds in the northern hemisphere.

3. And _______ trade winds in the southern hemisphere.

4. However, under C__________ F_________, they turn into ________ trade wind after crossing the equator.

5. It is because winds deflected to the _________ of their path of motion in the _________ hemisphere.

1. Trade winds are formed when winds blow from subtropical high to equatorial low.

2. They form NE trade winds in the northern hemisphere.

3. And SE trade winds in the southern hemisphere.

4. However, under coriolis force, they turn into SW trade wind after crossing the equator.

5. It is because winds deflected to the right of their path of motion in the northern hemisphere.

2016 DBQ

​In which season is the Northern Hemisphere?

Multiple Choice

In which season is the Northern Hemisphere?

[Think of at least one reason to explain]

• Spring

• Summer

• Autumn

• Winter

Open Ended

In which season is the Northern Hemisphere?

[Explain your answer with one reason]