Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download to see GLACIERS
Transcript
GLACIERS Any large mass of ice that moves slowly over land GLACIERS There are two types of glaciers Continental Glacier A glacier that covers much of a continent or large island Antarctica Glacier GLACIERS There are two types of glaciers Continental Glacier It spreads out in all directions Antarctica Glacier GLACIERS There are two types of glaciers Continental Glacier The glacier covering Antarctica is over 3 kilometers thick Antarctica Glacier How many miles thick is the Antarctica glacier? GLACIERS There are two types of glaciers Continental Glacier 3 kilometers is how many miles? 1 kilometers = .62 miles 3 kilometers = 3 X .62 miles 3 kilometers = 1.86 miles Antarctica Glacier GLACIERS There are two types of glaciers Continental Glacier The glacier covering Antarctica is over 3 kilometers thick 3 Kilometers = 1.86 miles Antarctica Glacier GLACIERS There are two types of glaciers Continental Glacier During the last ice age a continental glacier covered most of North America GLACIERS There are two types of glaciers Valley Glacier A long narrow glacier that forms when snow and ice build up high in a mountain valley GLACIERS There are two types of glaciers Valley Glacier The sides of the mountains keep these glaciers from spreading out in all directions GLACIERS There are two types of glaciers Valley Glacier They usually move down valleys that have already been cut by rivers GLACIERS There are two types of glaciers Valley Glacier Glaciers form where more snow falls that melts GLACIERS There are two types of glaciers Valley Glacier Once the depth of snow and ice reaches more than 30 to 40 meters, gravity begins to pull the glacier downhill GLACIERS The two processes by which glaciers erode the land are plucking and abrasion Plucking Abrasion GLACIERS The two processes by which glaciers erode the land are plucking and abrasion Plucking The weight of the ice can break the rocks apart. These rock fragments freeze to the bottom of the glacier. GLACIERS The two processes by which glaciers erode the land are plucking and abrasion Abrasion When the glacier moves, it drags the rocks across the land This process is called abrasion GLACIERS Valley Glacier Before valley glaciers form the valley is V shaped GLACIERS Valley Glacier After valley glaciers have formed and melted the valley is U shaped GLACIERS Valley Glacier If you see a U shaped valley you can probably conclude that it was at one time a V shaped valley that was shaped into a U shaped by a glacier GLACIERS Valley glaciers V Shaped Valley U Shaped Valley U-shaped Valley
