How is chemical weathering different from physical weathering?

a.

Physical weathering involves the movement of substances while chemical weathering does not.

b.

Chemical weathering occurs through human action while physical weathering occurs naturally.

c.

Physical weathering is mechanical breakdown, while chemical weathering involves the chemical breakdown of substances.

d.

Chemical weathering causes less drastic changes than physical weathering.

Question

How is chemical weathering different from physical weathering?



a. 

Physical weathering involves the movement of substances while chemical weathering does not. 


b. 

Chemical weathering occurs through human action while physical weathering occurs naturally. 


c. 

Physical weathering is mechanical breakdown, while chemical weathering involves the chemical breakdown of substances. 


d. 

Chemical weathering causes less drastic changes than physical weathering.

hugsnotughs · Answer

The difference of these two types of weathering is actually pretty easy.  Physical weathering is caused by physical interaction, for example wind erosion.  Chemical weathering is caused by a chemical reaction with the surface. For example, acid rain or rust.

I know D is incorrect because there is no proof that chemical weathering causes less damage.  And B is also incorrect because chemical weathering is not just caused by human interaction.  A I believe is also wrong.  I was taught that weathering is a process "with no movement".

So I guess that answer is C.