The UK's evolving physical landscape Flashcards
What are the three types of rock?
Sedimentary, Metamorphic, Igneous
What is carbon dating?
Using radioactive testing to determine the age of rocks, which contained living material
What is erosion?
A process where the landscape is worn down
What are layers of rock called?
Why are some parts of a valley worn away more easily than others?
They are made from a less resistant type of rock
What is a fault scarp?
A steep slope, showing where land has been eroded
How did tectonic processes affect the Pennines?
- Convection currents beneath the plate, uplifted rocks from below the sea, to form land
- Some rocks snapped and moved along faults over thousands of years in a series of earthquakes
- Each movement disturbed the strata as some were left with steep sides (fault scarps)
How do V-shaped valleys form?
Rivers erode into the valley over time
How do U-shaped valleys form?
Glaciers erode further into the V-shaped valleys making wide troughs
What happened when the glaciers melted?
Features like waterfalls were left behind