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What does RF or relative to front mean?

RF or relative to front refers to a measurement or location that is oriented to the front of an object or space. It is a way to describe positions or directions in relation to the front-facing side of something.


How far can a average glacier travel in one year?

As a guess, about a foot. Some glaciers that are closer to being flat may move less than that. Some glaciers that are steeper naturally move faster. There is a glacier in the bay near Tierro del Fuego (just north of Antarctica) that is moving many yards in a year, or more. This is the result of it being more cold at the glacier's top resulting in more ice buildup from rain/snow.


What moves very slowly over thousands of years and chisel away the Earth in front of them?

Glaciers


How a bulldozer is not a accurate model of how glaciers cause rocks to move in grooves in rocks and other formations on the surface of the earth?

A bulldozer simply pushes loose material in front of it. A glacier is a continuously-fed, rasp-like structure that will push debris in front of it, but its main action is from ice-plucking and abrasion by rocks trapped in the ice in its base.


What happens when a glaciers rate of melting is greater than its rate of movement?

When a glacier's rate of melting exceeds its rate of movement, excess meltwater can accumulate at the surface, leading to the formation of melt ponds and potential for surface water to drain through crevasses, lubricating the base and potentially increasing sliding speed. This imbalance can disrupt the glacier's stability and potentially accelerate its flow towards the terminus.