Exam 18: Amazing Ice: Glaciers and Ice Ages

Which of the following figures is of glacial lake-bed deposits?

During the Pleistocene Ice Age glaciers reached as far south as ________.

Which of the following scenarios would lead to glacial advance during a time of global warming?

You are hiking in your favorite forest when you encounter a surface that appears to have very fine scratches in it.What are these features?

In the movie Ice Age: The Meltdown,there is a large wall of ice that begins to melt and finally breaks,causing a large flood.On what real-life geologic event was this part of the movie based?

________ can be recognized as a series of U-shaped hills that are lined up and represent the ________ of the glacier.

What are the circumstances that lead to glacial advance versus glacial retreat? Most glaciers today are in retreat.What does this imply about the glaciers and their environment?

At the present,glaciers cover about ________ of the surface of the continents.

A glacier will always advance from its source area if the rate of accumulation is greater than the rate of ________.

By increasing the albedo of Earth,global ice sheets produce conditions that are ________ to their further advance,thus providing an example of ________ feedback.

Currently,almost all the glaciers on Earth are in a state of retreat,which means that the rate of ________ is less than the rate of ________.

If a volcano were to erupt and release large amounts of ash into the air,how would this affect the climate on Earth?

The Milankovitch Cycles describe the relation of Earth and the ________,which affects the amount of insolation Earth receives.

Which of the following images shows the oldest snow?

Sea level ________ during glacials and ________ during interglacials.

Today,continental glaciers are limited to Antarctica and ________.

Explain why the deposits made by glacial outwash are stratified.

An important long-term factor that determines whether glacial ice will form on a continent has likely been the proportion of which gas in the atmosphere?

Which types of features would you find in a glacially carved landscape?

The Mars rover Curiosity has recently found evidence that there was liquid water on the planet's surface at some point in its history.Because we have not found any liquid water on the planet today,what does this imply about Mars?