1
Q
weathering
A
breakdown of rock at or near the earth’s surface into smaller and smaller pieces
2
Q
mechanical weathering
A
rock is broken or weakened physically
3
Q
chemical weathering
A
alters a rock’s chemical makeup
4
Q
acid rain
A
chemicals in polluted air combine with water and fall back to earth (chemical weathering)
5
Q
erosion
A
the movement of weathered material such as gravel, soil, and sand
6
Q
sediment
A
small particles of soil, sand and gravel
7
Q
Wind, Water, Glacier
A
major causes of erosion
8
Q
loess
A
windblown deposits of dust and silt
9
Q
Glacier
A
huge slow-moving sheets of ice
10
Q
moraines
A
ridgelike piles of rock and debris
