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?
Severe Weather
Lesson Overview:
1) What do we already know?
2) Vocabulary
3) Drawings
4) Main Ideas
5) Review
Earth’s Weather: Lesson 4

3. Severe Weather What do we already know? BrainPOP Teaser
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Severe Weather What do we already know? BrainPOP Teaser
How do oceans affect temperature on land?
a) Ocean’s cool off the land during summer and warm it up during winter.
What are ocean currents?
a) Moving water in the ocean
3) What causes El nino?
a) Warm water warms the air near the
coast.
3) Food Chain
Earth’s Weather: Lesson 4

4. Severe Weather: Vocabulary Part I
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Severe Weather: Vocabulary Part I
1) Air mass: a large region of air that has a similar temperature and hunidity.
2) front: The meeting place where two air masses meet.
3) Thunderstorm (Brainpop): a rainstorm that includes thunder and lightning
4) tornado: a rotating, funnel shaped cloud with extremely high winds.
Earth’s Weather: Lesson 4

5. Severe Weather: Vocabulary Part II
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Severe Weather: Vocabulary Part II
5) Low pressure closure: an area of low pressure surrounded by an area of high pressure.
6) hurricane: a very large, swirling storm with very low pressure at its center and widn speeds higher than 73 mph.
7) Storm surge: a bulge of water created by an area of very low pressure in the ocean.
8) Cyclone: a storm with a low pressure closure and a circular pattern of winds.
9) Monsoon (Brainpop): a seasonal wind usually associated with heavy rains.
Earth’s Weather: Lesson 4

6. Severe Weather: Drawings (pg. 265)
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Severe Weather: Drawings (pg. 265)
Warm Front
Cold Front
Earth’s Weather: Lesson 4

7. Severe Weather: Drawings (pg. 266)
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Severe Weather: Drawings (pg. 266)
Earth’s Weather: Lesson 4

8. Severe Weather: Drawings (pg. 267)
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Severe Weather: Drawings (pg. 267)
Earth’s Weather: Lesson 4

9. Severe Weather: Main Ideas
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Severe Weather: Main Ideas
What causes severe weather? (pg )
a) When warm and cold fronts come together, warm air gets pushed upward and forms clouds.
Quick Check (pg. 265)
-Critical Thinking: How can you tell a front is passing through your area?
a) You can feel the change in temp. and breeze.
Earth’s Weather: Lesson 4

10. Severe Weather: Main Ideas
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Severe Weather: Main Ideas
2) What causes thunderstorms?
(pg )
a) See Main Idea question 1.
Quick Check (pg. 267)
-Critical thinking: How is the production
of thunder similar to the “pop” produced
by a pricked balloon? a)
Earth’s Weather: Lesson 4

11. Severe Weather: Main Ideas
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Severe Weather: Main Ideas
3) What are tornadoes? (pg. 268)
a) See Vocabulary
Quick Check (pg. 269)
-Cause and Effect: What causes winds
to rotate in a tornado?
a) Remember Mr.P.’s drawing (on website).
Earth’s Weather: Lesson 4

12. Severe Weather: Main Ideas
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Severe Weather: Main Ideas
4) What are hurricanes? (pg )
a) See vocabulary
Quick Check (pg. 271)
-Cause and Effect: What causes the
size of hurricanes to increase?
a) The hurricane draws other storms into it
making the hurricane even bigger
(bathtub analogy)
Earth’s Weather: Lesson 4

13. Severe Weather: Main Ideas
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Severe Weather: Main Ideas
5) What are other forms of severe weather? (pg. 272)
a) Flooding, monsoon, fog
Quick Check (pg. 272)
-Cause and Effect: What causes ground
fog to form?
a) When evaporated water meets cold air near
the surface and condenses.
Earth’s Weather: Lesson 4

14. Severe Weather: Review
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Severe Weather: Review
Summarize the main ideas
Click to Watch!
Think, Talk, and Write
Earth’s Weather: Lesson 4