Rocks Flashcards
(10 cards)
1
Q
What are the three types of rocks?
A
Igneous, sedimentary and metamorphic
2
Q
How are igneous rocks formed?
A
When magma cools down.
3
Q
How are sedimentary rocks formed?
A
when rocks are compressed (usually underwater)
4
Q
How are Metamorphic rocks formed?
A
Rocks change formation and stretch out due to weathering.
5
Q
Where are most igneous rocks found?
A
Northern Scotland in the highlands
6
Q
Where are most sedimentary rocks found?
A
Southeast England mostly, in a body of water.
7
Q
Where are most metamorphic rocks found?
A
Northwest Wales and southern Scotland 500m-1000m in height.
8
Q
What are the steps of freeze-thawing?
A
- Water gets into the cliff-face
- water freezes where temperatures fluctuate
- the cracks open up wider as the water freezes
- stresses are create in the rock and overtime widens and the rock falls to pieces
9
Q
What the steps to carbonation?
A
- rainwater mixes with carbon dioxide
- Rain water becomes a weak carbonic acid
- The acid attacks alkaline rocks
4.the rock is dissolved and weakened over time
10
Q
Which area will have more resistant rocks (highlands or lowlands)?
A
Highlands, as they have been there longer and eroded less.
