Sedimentary Rocks, Weathering, and Erosion
How does a hoodoo form?
By differing rates of erosion
Rocks that form when minerals crystallize from water are called_____rocks.
Chemical
How is mechanical weathering different from chemical weathering?
Chemical weathering changes the chemical composition of materials, mechanical weathering does not
________rocks are made of broken and minerals
Clastic
____ are pieces of rocks and minerals in a sedimentary rock
Clasts
____ is the process that squeezes sediment together
Compaction
What might cause mechanical weathering?
Growing plants and expanding ice
Which landform is created by glaciers?
Maraine
What type of change does erosion cause?
Physical change
What impact does weathering have on soil formation?
Rocks are broken down into smaller pieces, and finally sediment
During erosion rocks become more ____ and develop smoother edges.
Rounded
What type of rocks are formed by weathering?
Sedimentary rocks
How might a weathered mountain appear different from an unweathered mountain?
The weathered mountain would appear more round and smooth.
Carbonic acid is a mixture of
Water and carbon dioxide
What is weathering?
Weathering is the breaking down of rock over a long period of time.
____ rocks are made from the remains of organisms
biochemical
____ is a process that binds sediment together
cementation
The process of _____ causes rocks on Earth's surface to change, crumbling mountains, and widening valleys.
erosion
When liquid water _____in rock, it expands and causes rocks to erode by cracking them.
freezes
When rain combines with____in rock, it forms rust, which is a form of chemical erosion
iron
Chert
is a biochemical rock
Coal
is a biochemical rock
Limestone
is a biochemical rock
Calcite
is a chemical rock
Rock salt
is a chemical rock
Conglomerate
is a clastic rock
Erosion moves weathered rock from one ____ to another.
place
Erosion is the slow wearing away of Earth's ____ over millions of years
surface
Moving water
wears away land and moves rocks and soil