Question

the diagram on the left shows the extent to which the last continental ice sheet extended during the last ice age, approximately 20,000 years ago.

1. what general direction did the ice sheet move? why do you think this is?
2. what do you think the \terminal moraine\ is and what does it tell us about the glacier that once covered new york state?

how do glaciers cause erosion?
when a glacier advances down a valley or over a continent, the ice pushes, carries, and drags great quantities of soil and sediment. these loose materials have little chance of remaining in place when a mass of ice hundreds or even thousands of meters thick moves over them. ridges and knobs of bedrock are pried loose or rounded by the moving ice. although ice is much softer than most bedrock, the rocks and sediment dragged along the bottom of a glacier scrape and scour the bedrock over which the

Explanation:

For question 5: The arrows in the diagram point southward, indicating the general direction of ice - sheet movement. Gravity and the shape of the landmass likely caused this southward flow.
For question 6: A terminal moraine is a ridge of debris (soil, rocks, etc.) deposited at the farthest point of a glacier's advance. It shows the maximum extent of the glacier that once covered New York State.

Answer:

1. The ice sheet moved in a general southward direction. The arrows in the diagram point south, and glaciers move under the influence of gravity, often following the slope of the land which in this case led south.
2. A terminal moraine is a ridge of sediment (rocks, soil, etc.) deposited at the end (terminal) of a glacier. It tells us the furthest point that the glacier advanced in New York State.