6. Grade 4

Homework Grade 4


제목Science(Due Tuesday)2022-11-21 13:21
작성자 Level 10

ST pp. 198-202, AM p.141
Write the keywords with the meanings.
Answer the quick check questions.(p.202)

Answer the questions below.
 

What name is given to small bits of weathered material?

When weathering removes sediment from a rock, does all the sediment stay piled next to the rock?

What word do we use to identify the movement of bits of weathered material?

What can cause erosion?

What can erode topsoil?

How do plants help topsoil?

How does a sea cave form along the beach?

How is a sea arch formed?

What great event recorded in the Bible formed many large landforms?

What landforms are pictured?

Have these landforms remained the same since they were formed?

What is continuing to cause them to erode?

Have these landforms remained the same since they were formed?

What is continuing to cause them to erode?

Which direction does water flow?

What force causes water to flow downhill?

What does water carry with it as it flows?

Where does deposition usually occur along rivers and streams?

Does the water move quickly or slowly at the mouth of a river?

What happens as a river deposits sediment at its mouth?

 What is a delta?

What shape is often formed at a delta?

What landform is caused by windblown sand?

What does a dune look like?

What other kind of sediment can wind carry away?

What happened to the dry topsoil?

 Why did the topsoil blow away so easily?

 

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