Living things (In your own words, what you think?)
• What does it mean to be alive?• How do YOU know if something is alive?• What are three traits shared by all living
things?
Use textbooks, the computers, and WWW
1. Compare and contrast Glacial and Water Erosion2. Give an Analysis of V-Shaped and U-Shaped Valleys
East Antarctica
What are Glaciers?
• Large body of ice and snow that has been built up over centuries.
• Glaciers can move at a rate of 2 cm/yr under their own weight and gravity
• They move and destroy everything in their path, bulldozing trees, rock, etc…
• They can wear down Mountains, turning them into hills, and flat land.
• They can carve valleys out of rock
Water Erosion
• Wears away the surface of earth using rivers and other sources of surface water.
• Destroys landscapes and houses due to massive rainfall.
• Water can pick up minerals and drop them off at another location.
• Water can dissolve minerals
Compare and Contrast
• Mountains of ice and snow
• Slow moving•Wears down Mountains
• Fast moving• Wears down the
surface of earth• Dissolves minerals
• Water• Cause erosion•Change surface of
earth
Glacier Watersame
Compare and Contrast
• Caused by running water
• Caused by Glaciers• Smooth sides• Flat bottom• Wide
• Carves out space between
Mountains, Plateaus, etc..
V-shaped Valley U-Shaped Valley
same
Glacial versus Water Erosion
Glaciers• Large Mountains of snow
and ice that build up over time.
• Slow moving under its own weight
• Acts as a bulldozer, moving down rocks, trees, picking up sediment and scraping and polishing land as it moves
Water• Water falls to earth during
rain.• Fast moving water moves
down slope, carries away sediments
• Carves out the land• Major force of erosion• Water dissolves particles
and deposits them elsewhere
ValleyV-shaped
• Found near the source of rivers• Formed from fast moving
water dissolving and breaking down rock and minerals along its path.
U-shaped
• Results when a river valley has been further eroded by a glacier
• The glacier over deepens a v shaped valley, polishing and reshaping the contour of the walls