Focus On Earth Science: California Grade 6

Lesson 1: Weathering

Standards Check

1.
Which is the most common agent of chemical weathering? 2.a
A)ice
B)carbon dioxide
C)water
D)oxygen
2.
What happens when chemical weathering occurs? 2.a
A)Material is lifted and redeposited by wind.
B)Frost wedging breaks rock into smaller pieces.
C)The thickness of sediment layers increases.
D)Rocks are broken into smaller pieces and their composition is changed.
3.
The formation of clay from the mineral feldspar is an example of _______. 2.a
A)chemical weathering
B)physical weathering
C)deposition
D)mass wasting
4.
Which of these does not cause physical weathering of rock? 2.a
A)frost wedging
B)exposure to acidic water
C)root pressure
D)burrowing animals
5.
Which best describes how soils are formed? 2.a
A)the action of glaciers
B)longshore transport
C)physical and chemical weathering
D)mass wasting
Grade 6
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