Weathering

Question 1

What are the three types of weathering?

Answer 1

Chemical, physical and biological

Question 2

What type of weathering is acid rain dissolving rocks an example of?

Answer 2

This is an example of chemical weathering

Question 3

What type of weathering is vines growing into cracks in a building an example of?

Answer 3

This is an example of biological weathering

Question 4

What is physical weathering caused by?

Answer 4

Physical weathering is caused by changes in temperature

Question 5

What is erosion?

Answer 5

Erosion is when sediments are transported and deposited away by water, wind, gravity or ice

Question 6

What is weathering?

Answer 6

Weathering is breaking down something big to make it small

Question 7

How are metamorphic rocks formed?

Answer 7

Metamorphic rocks are formed when sedimentary or igneous rocks are out under heat or pressure

Question 8

How does limestone change to marble and is it a chemical or physical change?

Answer 8

When limestone gets hot it’s atoms rearrange themselves in a new arrangement
This makes big crystals of Calcium Carbonate which interlocks tightly, making marble harder than limestone
A new rock is formed. It’s name is marble
This is a physical change

Question 9

Explain Freeze-Thaw weathering

Answer 9

1. Rain water fills a crack in the stone
2. The water freezes and expands, forcing the stone crack open
3. The ice thaws out, water filling the crack again
4. The water once again freezes and expands, forcing the stone crack open even further. Bits of stone may fall away.
5. This process continues. This is also how pot holes are formed.

Question 10

Explain onion skin weathering

Answer 10

1. During the day the rock expands due to heat
2. During the night the rock cools due to the cold
3. The cycle repeats
4. Layers of the rock slowly peel away

Question 11

What links the formation of rocks together?

Answer 11

The formation of rocks is linked together using the rock cycle