Glaciers: The Melting Giants

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What would happen if all of the world's glaciers melted at once?

Sea level would decrease.

Sea level would stay the same.

Sea level would rise approximately 215 feet. (correct)

There would be no effect on sea level.

How do glaciers form?

From rainwater accumulation.

By the evaporation of seawater.

Through the compression of layers of snow due to increasing weight. (correct)

By the melting of icebergs.

What term is used to describe the addition of snow and ice to a glacier?

Deposition

Evaporation

Erosion

Accumulation (correct)

In what ways can accumulation occur on a glacier?

Wind-blown snow settling onto the glacier or snow flowing onto the glacier via an avalanche. Signup and view all the answers

What are glaciers according to the text?

Dynamic structures that move, grow, and recede. Signup and view all the answers

Why do glaciers move?

Because of their dynamic nature responding to different conditions. Signup and view all the answers

How does snow contribute to glacier formation?

By accumulating and compressing into glacier ice layers. Signup and view all the answers

Which of the following is NOT a form of ablation?

Accumulation Signup and view all the answers

What is the term used to describe the process where ice directly changes into vapor without going through the liquid phase?

Sublimation Signup and view all the answers

What are the floating masses of ice called that break off from a glacier during calving?

Icebergs Signup and view all the answers

What term is used to describe the leading edge or the front part of a glacier?

Both A and B Signup and view all the answers

What term is used to describe the balance between accumulation and ablation of a glacier?

Glacier mass balance Signup and view all the answers

If a glacier has a positive mass balance, what does it mean?

The glacier is advancing Signup and view all the answers

What term is used to describe the condition when a glacier is not changing in size due to equal accumulation and ablation?

Equilibrium Signup and view all the answers

If a glacier has a negative mass balance, what does it indicate?

The glacier is retreating Signup and view all the answers

Glaciers: The Melting Giants

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