E.3 Flashcards
1
Q
what is mechanical weathering
A
Rock is broken down by a physical process (water, wind, and ice)
2
Q
Example of Mechanical Weathering
A
Rivers: flowing water erodes the outside edges and deposits sediments on the inside edges
Glaciers: as they move they pick up and deposit rocks scraping bedrock as they go
Wind: Hoodoos form
from wind carrying
particles of dust and
dirt that strike the rock
3
Q
what is Chemical Weathering
A
Chemical agents like acids dissolve and carry away materials.
4
Q
what is Biological Weathering
A
Living things breaking down rock like tree roots and lichen.
5
Q
What is erosion and deposition?
A
Erosion - when rocks or soil are removed from a surface
Deposition - the laying down of sediments from wind, water, or ice
