Glaciers

What is plucking?

• When rocks become frozen into the glacier and are 'plucked' out when the glacier moves

• When rocks scrape the bottom of the corrie

• When cracks in rocks fill with water and freeze when it is colder

Which type of erosion makes the corrie deeper?

• Plucking

• Abrasion

• Freeze-thaw weathering

When is a pyramidal peak formed?

• When a corrie erodes backwards

• When two corries erode backwards towards each other

• When three or more corries erode backwards towards each other

What is moraine?

• Sand transported by a glacier

• Rocks transported by a glacier

• Any material transported by a glacier

What is lateral moraine?

• Material found in the middle of the glacier

• Material found at the end of the glacier

• Material found along the edges of the glacier

What is a ribbon lake?

• A lake found near the sea

• A lake found in a corrie

• A long, thin lake found in the valley bottom

What is Striding Edge in the Lake District an example of?

• A tarn

• A pyramidal peak

• An arête

What is Cwm Idwal in Snowdonia an example of?

• A corrie

• A tarn

• A hanging valley

What landform is found where smaller valleys meet the main glaciated valley?

• U-shaped valleys

• Pyramidal peak

• Hanging valley

Which of the following is one of the two main ways ice carries out erosion?

• Corrosion

• Hydraulic action

• Abrasion