Geography Edexedel 4.1 Flashcards
How was glaciation involved in shaping UK’s upland landscape?
- Last ice age was 10,000 years ago, which could have eroded the land.
- Glaciers melted and huge amounts of water eroded landscapes.
- Main process was glacial erosion.
When was the last ice age?
10,000 years ago.
What shape are glacial troughs?
U shaped valleys.
Why are fossils tested using carbon dating?
So geologist know if they lived during Carboniferous.
What happened to skeletons as they fell?
As they fell they crush those beneath squeezing water out and compacting them into rock.
What resists erosion well?
Carbon grit resists erosion so well that it forms the highest peak of the Pennines.
Over 300 million years how many tectonic processes affected the rocks in the Pennies?
Three.
What happens to convection currents beneath the UK plate?
It uplifted which made it land.
Where is the plate that the UK sits on shifted?
It is shifted away from the tropics.
What happens if some rocks snap during uplift?
They move along the faults.
What are the three rock types?
Igneous, metamorphic and sedimentary.
What are the characteristics of igneous rock?
The characteristics of igneous rocks are that they are the earth’s oldest rock which are formed by lava and magma. When magma or lava cool, the rock is formed. They are crystallised and more resistant to erosion.
What are the characteristics of sedimentary rock?
They are formed by small eroded particles. They are transported and they are deposited in layers. They can come from plants and animals. Some sedimentary rocks are resistant, while other are easily able to be crumbled.
What are the characteristics of metamorphic rocks?
Metamorphic rocks are sedimentary rocks that were compressed and heated during igneous activity. They are made up of layers and tend to be more resistant.
What are the characteristics of chalk?
Chalk was formed by being a purer form of limestone. It has a medium resistance but is stronger than clays and sands.
