Glacier

The video explains glaciers as large, slow-moving ice masses, detailing two types: alpine and continental. Alpine glaciers flow from mountains into valleys, while continental glaciers cover vast areas, forming ice shelves and icebergs. Glaciers form from compacted snow and are the largest freshwater source. They reshape landscapes by grinding and depositing rocks, creating features like moraines.

What is the primary difference between alpine and continental glaciers?

• Continental glaciers are made of rock, while alpine glaciers are made of ice.

• Alpine glaciers move faster than continental glaciers.

• Alpine glaciers are smaller and found in mountains, while continental glaciers are larger and cover vast areas.

• Alpine glaciers are found in polar regions, while continental glaciers are found in mountains.

How are glaciers formed?

• Through the accumulation and compaction of snow over time.

• By the freezing of rainwater.

• Through volcanic activity.

• By the melting and refreezing of ocean water.

What happens to a glacier as it moves across the land?

• It remains stationary and does not affect the landscape.

• It grinds against the Earth, reshaping and reforming the land.

• It melts completely and disappears.

• It creates new glaciers in its path.

What are moraines?

• Rivers formed by glacial meltwater.

• Large icebergs floating in the sea.

• Deposits left behind by melting glaciers.

• Sharp mountain peaks formed by glaciers.

What evidence can be seen on the landscape that indicates the presence of glaciers?

• Deserts with sand dunes.

• Sharp mountain peaks and ridges, and new shaped valleys.

• Lush forests with diverse wildlife.

• Smooth, flat plains with no rocks.