Year8 Weathering Flashcards
1
Q
What is physical weathering?
A
Temperature change, the action of water and ice, crystallisation of salts, wind, living plants
2
Q
How does temperature change weather rocks?
A
Solids expand when heated and shrink when cooled, so rocks can heat up during the day and crack at night when they cool down
3
Q
How does water and ice weather rocks?
A
Ice can split rocks by cooling them rapidly.
Water running over rocks can gradually wear away material.
4
Q
How does wind weather rocks?
A
Fine particles of rock carried by the wind eg. Sand can weather or wear away rocks
5
Q
How do plants weather rocks?
A
Plants roots can split rocks
6
Q
What does weathering mean?
A
Weathering is the physical and Chemical processes that break rocks down
7
Q
What is a rock cycle?
A
When rocks are broken down and remade.
