The UK'S evolving physical landscape Flashcards
What is igneous?
Made from magma eg. granite
What is sedimentary?
Compressed sediment eg. clay or limestone
What is metamorphic?
Igneous or sedimentary rock changed by heat or pressure
What happened to the top half of the UK during the Ice Age?
It was glaciated- ice pressed down on the landscape and eroded it in distinctive ways
What happened to the bottom half of the UK during the Ice Age?
It was not covered in ice sheets but it was heavily influenced by glacial deposition
What is chalk like?
It is very strong and permeable so it forms cliffs when it occurs at coastlines
Where chalk found?
Only in lowland Britain
Where is clay found?
All over Britain
What is clay like?
It is weak and impermeable
What are clay landscapes like?
They are wide, flat plains with lots of lakes, streams and rivers
What is granite like?
It is very hard and resistant to erosion but is susceptible to chemical weathering
Why are granite landscapes badly drained?
Because granite is impermeable
What are some features of granite landscapes?
Tors- towers of granite chemically weathered into blocks
In lowland landscapes how has the landscapes been formed?
By the cations of rivers as the rivers have meandered and they have eroded a wide valley between low hills
What do the rivers transport? LL
They transport silt eroded from the chinned; sow hen there is prolonged rain they flood depositing silt to form floodplains