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OE- Cryosphere
Cryosphere
Question | Answer |
---|---|
What are the main components of the Cryosphere? | Snow cover, permafrost, sea ice and glaciers |
Which of the four main components is the largest component of the cryosphere? | Snow cover |
What is the cryosphere? | The part of the Hydrosphere that is frozen. Includes the 4 components. Means frost in Greek "krunos" |
What is permafrost? | It occurs in cold areas where ground does not thaw in the warmest months |
Draw a diagram of how a glacier is developed | Answer should include: 5 stages, 3 zones |
Which of the 4 components of the cryosphere contributes greatly to global climate change? How? | Sea Ice, the melting ice water is added to the oceans and therefore is causing ocean level to rise. |
Define Albedo. Which has greater albedo, snow or forest? | The % of solar radiation reflected back to the atmosphere. Snow reflects more therefore has a higher albedo. |
What role does the Cryosphere have on the hydrologic cycle? How has this changed? | Answers may vary but should include: greater increase of water as cryosphere is melting. |
What is till? | Glacial material picked up (rocks and boudlers) as the glacier moves |
What is Plastic flow? | movement within the ice shelf |
How are glacial landsacpe features created? Give examples. | Landscape features are created as a glacial carves away at the existing landscape and when it melts features are left behind such as horns, cirques and aretes. |
How are glacial depositional features created? Give examples | Depositional features are features left behind from glacial debris (till) such as drumlins, morraines and eskers. |
What is a U-shaped valley? | A wide valley that is left behind from a glacier. |