Physical and Chemical Weathering

Eric AngatTeacher

1.What are the two types of weathering?2.What are the different types of physical

weathering?3.How is root wedging similar with frost

wedging?4.Why are rivers rocks rounded and smooth?

Think!5.What is differential weathering?6.What is the relationship between climate and

weathering7.What is the relationship between surface area

and weathering?

https://www.youtube.com/watch?v=u_WN2ICRb2M

Physical or Mechanical weathering

Types of Physical or Mechanical Weathering

1.Frost wedging2.Root wedging3.Abrasion4.Exfoliation5.Differential weathering

Rock hardness Rate of weathering

Surface area Rate of weathering

https://www.youtube.com/watch?v=u_WN2ICRb2M

Physical or Mechanical weathering

This is an example of

root wedgingRoots produce carbonic acid that dissolves minerals in rocks. ( chemical )

Roots grow through cracks in rocks. ( physical)

This is an example of of tumbling and abrasion

Abrasion happens when rocks rub together.

Tumbling happens when rocks roll on the surface hitting other rocks.

This is an example of differential weathering.

Minerals in the middle of the rock is more prone to weathering.

1.What are the two types of weathering?2.What are the different types of physical

weathering?3.How is root wedging similar with frost

wedging?4.Why are river rocks rounded and smooth?

Think!5.What is differential weathering?6.What is the relationship between climate and

weathering7.What is the relationship between surface area

and weathering?

https://www.youtube.com/watch?v=P8oWj3PVK9E

Chemical Weathering

https://www.youtube.com/watch?v=P8oWj3PVK9E

Chemical weathering

8. What are the different types of chemical weathering?9. How is chemical weathering different from physical weathering?10 . How is weathering different from erosion?

Types of Chemical Weathering

1.Hydrolysis2.Oxidation3.Carbonation4.Lichens5.Acid precipitation