Glaciation Processes of Erosion

Question 1

Plucking

Answer 1

Rocks freeze onto the sides of the glacier, as the glacier moved it pulls out pieces of rock. This leaves the landscape steep and jagged

Question 2

Abrasion

Answer 2

Rocks (from plucking) at the base of the glacier will stick to it and scour the landscape, which smooths and deepens it

Question 3

Freeze-Thaw

Answer 3

Meltwater from the glacier will seep into cracks in the rocks, causing the water to freeze and expand. This will happen several times, causing the rocks to eventually break

Question 4

How Glaciers Form

Answer 4

-Snow falls and doesn’t melt due to aspect and/or altitude where temperatures remain below zero

-The snow builds and compacts together, squeezing the air out. Firstly, this forms neve

-Over time, the sheer weight of the snow and it building each winter fully compresses and turns into true ice

-The glacier then moves downhill due to its weight and gravity, bulldozing and eroding its way through the landscape