Understanding Glaciers and Their Impact on Earth's Geography

Which type of glacier is found in mountain ranges?

• Ice cap

• Alpine glacier

• Ice sheet

• Continental glacier

What is the primary role of glaciers in Earth's climate system?

• They have no significant impact on climate.

• They primarily function to provide habitats for polar species.

• They reflect solar radiation, helping to cool the Earth.

• They absorb most of the solar radiation.

What percentage of Earth's freshwater is stored in glaciers?

• About 68.7%

• Nearly 2.8%

• Almost 99%

• Less than 1%

What geological feature indicates a past glacier presence in areas like the British Isles?

• Volcanic ash layers

• U-shaped valleys and erratic boulders

• Limestone caves

• Desert sand dunes

What happens to a glacier when it reaches a state of dynamic equilibrium?

• It changes direction and moves uphill.

• It advances rapidly due to increased snowfall.

• It melts completely and disappears.

• The amount of melting snow equals the new snow added.

What is a terminal moraine?

• A lake formed by melting glaciers

• A deep valley carved by glacier movement

• A ridge formed by debris as glaciers melt and retreat

• A type of mountain peak shaped by glaciers

How do glaciers contribute to the formation of the Great Lakes?

• By damming rivers with ice

• By melting and forming new water bodies

• Through the deposition of large boulders

• By enlarging and deepening former river valleys

Which feature is formed by the erosion of glaciers in mountainous areas?

• Plateau

• Arête

• Canyon

• Delta

What is the primary impact of glacier melt on human populations?

• Decreased agricultural productivity

• Increased availability of freshwater

• Rising sea levels threatening coastal areas

• Improved global trade routes

What is the significance of the 'doomsday glacier'?

• It is the largest glacier on Earth.

• It has no significant impact on sea levels.

• Its melting could raise global sea levels significantly.

• It is a major tourist attraction in Antarctica.