1. Earth Science Unit Overview: Chapter 4 – Earth’s Water
Lesson 1 – Earth: The Blue Planet
Lesson 2 – The Water Cycle
Lesson 3 – Fresh Water Resources
Lesson 4 – California’s Water Supply
Chapter 5 – Earth’s Weather
Lesson 1 – Earth’s Atmosphere
Lesson 2 – Air Current and Wind
Lesson 3 – Ocean’s and Air Temperature
Lesson 4 – Severe Weather
Lesson 5 – Predicting Weather
Chapter 6 – The Solar System
Lesson 1 – The Sun
Lesson 2 – The Structure of the Solar System
Lesson 3 – Gravity and Orbit

2. 1) What do we already know?
Air Currents and Wind
Lesson Overview:
1) What do we already know?
(BrainPop)
2) Vocabulary
3) Drawings
4) Main Ideas
5) Review
Earth’s Weather: Lesson 2

3. Air Currents and Wind What do we already know? BrainPOP Teaser
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Air Currents and Wind What do we already know? BrainPOP Teaser
What is air pressure?
a) The force put on a given area by the weight of the air above it.
What variables can change air pressure?
a) Temp, volume, altitude, water vapor
3) What happens to air pressure when air is cooled ?
a) Air pressure increases because gas
particles slow down and get close
together.
3) Food Chain
Earth’s Weather: Lesson 2

4. Air Currents and Wind: Vocabulary Part I
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Air Currents and Wind: Vocabulary Part I
1) convection: the transfer of heat through the movement of gas or liquid.
2) Global wind: are winds that blow steadily in predictable directions and over long distances.
Earth’s Weather: Lesson 2

5. Air Currents and Wind: Drawings (pg. 244)
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Air Currents and Wind: Drawings (pg. 244)
Earth’s Weather: Lesson 2

6. Air Currents and Wind: Drawings (pg. 245 )
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Air Currents and Wind: Drawings (pg. 245 )
Earth’s Weather: Lesson 2

7. Air Currents and Wind: Drawings (pg. 246 )
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Air Currents and Wind: Drawings (pg. 246 )
Earth’s Weather: Lesson 2

8. Air Currents and Wind: Main Ideas
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Air Currents and Wind: Main Ideas
Why are temperatures different around the world? (pg )
a) Because the earth is curved, the sun energy will be less concentrated in some areas than others.
Quick Check (pg. 245)
-Critical Thinking: On what part of
Earth is sunlight the least concentrated?
a) The poles.
Earth’s Weather: Lesson 2

9. Air Currents and Wind: Main Ideas
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Air Currents and Wind: Main Ideas
2) How do land and water temperatures affect air pressure?
(pg )During the day
a) the land heats up faster than water, so the air over the water is more dense and wants to go where it is less dense (over the land).
Quick Check (pg. 247)
-Why does convection happen in liquids
and gases but not in solids?
a) Convection happens in liquids and solids
because the atoms are able to move.
Earth’s Weather: Lesson 2

10. Air Currents and Wind: Main Ideas
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Air Currents and Wind: Main Ideas
3) What are global winds? (pg. 248)
a) See vocabulary
Quick Check (pg. 248)
-Critical Thinking: Why did captains
need to know where global winds
were found?
a) To take advantage of the winds and thus,
travel faster.
Earth’s Weather: Lesson 2

11. Air Currents and Wind: Review
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Air Currents and Wind: Review
Summarize the main ideas
Click to Watch!
Think, Talk, and Write
Earth’s Weather: Lesson 2