5th Grade Science weathering, erosion, deposition
Terms in this set (22)
the breaking down of rocks into smaller pieces - can take hundreds or thousands of years
water/ice, plants, wind
3 causes of weathering
water seeps into cracks, water freezes, ice expands, ice cracks the rock into smaller pieces
rocks formed have sharp, ragged edges
roots grow into the cracks of rocks, as the roots get bigger and bigger they split the rocks apart
wind, combined with sand, rush over rocks and boulders. the sand in the wind hits the rocks hard and breaks down the rocks giving them smooth rounded surfaces, rocks formed have smooth rounded surfaces
rocks of all shapes and sizes are created from this
pebbles and sand
created from larger rocks
the moving of weathered rocks and soil to a new place, it changes the shape of the land
water, glaciers, wind
3 causes of erosion
rain loosens dirt and rocks, as rain flows over land, the water takes the dirt, rocks and other materials with it
rivers carve valleys and canyons
a stretch of low land between hills or mountains
rivers or glaciers
what are valleys formed from?
v shaped valley
a valley formed by a river
u shaped valley
a valley formed by a glacier
a deep, narrow river valley with steep sides
material picked up and carried when water moves to a new place
a huge mass of ice that moves slowly down a mountain or along a valley, they pick up sediment as they travel over land
rocks, sand, and dirt that is carried to a new place by water, wind, or glaciers.
sediment is moved and dropped in a new place
the process by which sediments (small particles of rock) are laid down in new locations. it drops sediment.
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THIS SET IS OFTEN IN FOLDERS WITH...
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US & Canada