Pockets or bubbles of water trapped in ice enable glaciers to flow and bend (i.e

Question

Pockets or bubbles of water trapped in ice enable glaciers to flow and bend (i.e. be plastic in nature). True False Mars is 1/10 mass of Earth & it probably cooled rapidly, and plate tectonics shut down. True False NASA's twin "robot geologists." Opportunity (Mars Exploration Rovers), were launched toward Mars on June 10 and July 7, 2003, in search of answers about the history of water on Mars. The mid-latitudes are warming faster from global warming than any other areas of the Earth. True False

Explanation / Answer

1.)

True

the ice actually becomes quite plastic, and it does this at fairly low pressures. The ice becomes plastic enough to flow when it accumulates to a depth of only about 60 feet or so, so when it does so, it flows downhill slowly, but measurably, very similar to the way a viscous liquid flows; in fact, it's not so different from the water in a stream as far as valley glaciers are concerned, or in the case of a continental ice sheet, it's like the ball of silly putty that collapses and flattens out under its own weight as the ice spreads out.

2.)TRUE

Mars probably started colder than the other earth-like planets. Then, Mars cooled rapidly from the outside, inward, like hardening candy. This caused the surface crust of Mars to rapidly thicken to the point of being immovable and prevented any further continental drift.

3.)sprit

4.)TRUE

but the recent data shows the polar coordinates are warming much faster as compare to mid lattitude

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