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Access Prior Knowledge Lesson 4: What is erosion? PowerPoint PPT Presentation


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Access Prior Knowledge Lesson 4: What is erosion?. Opening Activity O pen Science textbook to page 276. Open Science workbook to page 90A to review home learning. Open Science folder to review vocabulary words and outline for the chapter.

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Access Prior Knowledge Lesson 4: What is erosion?

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Access prior knowledge lesson 4 what is erosion

Access Prior Knowledge

Lesson 4: What is erosion?

Opening Activity

Open Science textbook to page 276.

Open Science workbook to page 90A to review home learning.

Open Science folder to review vocabulary words and outline for the chapter.

Open Science journal and answer the following questions:

1. How are mechanical and chemical weathering the same and 
 different?

Review Content Cards and Q-Cards in bin, sharing with partners quizzing each other 
quietly.

Log in to clickers using student ID number.

Be ready to review home learning when timer goes off.

Don't forget to write your 
home learning in your 
agenda page 91A.


Access prior knowledge lesson 4 what is erosion

Do you agree with the statement?

1

The processes of erosion and deposition

are the same.

Yes

No


Access prior knowledge lesson 4 what is erosion

Do you agree with the statement?

2

Ocean waves cause erosion on beaches.

Yes

No


Access prior knowledge lesson 4 what is erosion

Do you agree with the statement?

3

Wind can cause both erosion and weathering.

Yes

No


Access prior knowledge lesson 4 what is erosion

Do you agree with the statement?

4

Wind erosion only occurs in deserts.

Yes

No


Access prior knowledge lesson 4 what is erosion

Erosion and Depsition

Erosion is the movement of materials away from 
one place and deposition is the placing of the 
materials in a new place by wind, water or gravity.

Gravity is the main force in erosion like a flowing 
river cutting into the rocks to form a canyon or a 
landslide pulling rocks and dirt downhill.

Fast rivers carry more sediment.

First paragraph

pg. 276


Access prior knowledge lesson 4 what is erosion

Wave Erosion

Sand on the beach is created by waves which are a 
source of erosion and deposition.

The constant action of waves is a major source of 
erosion along shorelines.

Harbors and inlets form when some areas erode 
more quickly than others.

Deltas are a place where heavy sediments are 
deposited when a river meets an ocean.

Rocks are ground to sediment under moving glaciers.

Roots of trees can be exposed because the flowing 
water removed the sand that used to cover them.

First paragraph

pg. 278


Access prior knowledge lesson 4 what is erosion

Wind and Field Erosion

The wind can move dust, dirt, or sand 
from one place to another.

Wind erosion can cause problems on 
farms so farmers try to prevent wind 
erosion by planting trees along the edges 
of fields to block some of the wind.

Large, loose deposits of sand are called 
sand dunes.

Wind Erosion

First paragraph

pg. 280

Field Erosion

First paragraph

pg. 281


Access prior knowledge lesson 4 what is erosion

Erosion Video Clips

Erosion


Access prior knowledge lesson 4 what is erosion

MatchQuest

Wind Erosion

Wave Erosion

Field Erosion


Access prior knowledge lesson 4 what is erosion

TextQuest

Answer questions in Science journal.

1. What do you call it when materials are placed in a new place?

2. What do farmers do to prevent erosion of the topsoil?

3. How are harbors and inlets formed?

4. Erosion is caused by what things on Earth?

5. How was the Grand Canyon formed?

Don't forget to write your 
home learning in your 
agenda page 91A.


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