breaking down of rock material into small fragments or pieces; chemical components of rock remain unchanged
What is physical weathering
100
decomposition of rock material due to the chemical reaction of compounds in the rock with chemicals in the environment
What is chemical weathering
100
the processes by which rock and soil materials are loosened or dissolved and transported from one place to another
What is erosion
100
Physical Weathering
Breakage of rocks due to ____ and ____ cycles
What is freezing and thawing cycles
100
flat or nearly flat land next to a stream or river
What is a floodplain
200
small pieces of rock
What are sediments
200
_________ and _________ favor chemical reactions
What is warmth and high moisture
200
Slowly wears down rock until the surfaces of the rock are smooth
What is wind
200
Physical Weathering
-causes rocks to fall and break
What is gravity
200
a bend in a watercourse, formed when the moving water in a stream erodes the outer banks and widens its valley
What is a meander
300
mixtures of different elements and chemical compounds that combine in different proportions to form hard, solid materials of the Earth’s surface.
What are rocks
300
____________ decomposes before its interior
What is surface rock
300
as water moves to drainage basin, a land area from which a river system gets its water; it picks up sediment and sculpts the land: example: Grand Canyon
What is surface water
300
Physical Weathering
• Action of _______ ______ and cause rocks to split
What are tree roots
300
process in which the sediments from erosion are carried away to another place and deposited
What is deposition
400
the elements and compounds found in rocks, are solid and posses a crystal structure
What are minerals
400
Chemical weathering decomposes different rocks in (different or the same) ways
What is different
400
fresh water that is stored in the ground
What is ground water
400
Physical Weathering
• ______ and _______ cycles
What is Heating and cooling cycles
400
large mass of moving ice which shapes the land in many ways
What is a glacier
500
group of processes that break rocks into smaller pieces or sediments
What is weathering
500
True or False
All rocks are composed of the same chemicals and minerals
What is false-
Not all rocks are composed of the same chemicals or minerals, so chemical weathering affects rocks differently
500
2 causes of erosion
What are wind and water
500
Chemical Weathering
• Warmth & high _______ favor chemical reactions
What is
• Warmth & high moisture favor chemical reactions
500
Over millions of years it was gradually eroded by the water flow of the Colorado River