glaciation

5. large amounts of material piled up at the bottom of a glacier showing the furthest it has gone
6. in summer, melt water lubricates the glacier enabling it to slide down hill
8. the sharp ridges that are behind corries and separate glaciated valleys
9. the weight of the ice acts as sand paper to the rock. the ice polishes the rock and leaves scratches
10. a version of basal slip. in hollows high up the valley sides. movement is more rotational
12. large hollowed out depression in upper slopes. They have steep back wall and lip at front

1. one peak instead of a ridge
2. in the winter the glacier freezes to the rocky surface. the weight of the ice and the force of gravity causes single ice crystals to change shape. also causes glacier to move
3. in the summer melt water flows into cracks in rocks. in winter the water freezes and expands inside the rock. this weakens the rock so the glacier can take the rock away
4. a lake inside a corrie
7. steep sided, wide flat bottom valley
11. small rocks that have been broken off by freeze thaw