Show:
Physical Weathering
Chemical Weathering
Erosion
Vocabulary
Hodge Podge
100
What is physical weathering
It is the breaking of rocks into smaller pieces
100
What is chemical weathering?
a process that changes the minerals in rocks
100
What is erosion?
The moving of weathered rock and soil
100
water that drain off the land
What is runoff
100
Explain how physical and chemical weathering are different.
Chemical weathering changes the minerals that make up rocks, while physical weathering only changes the shapes and sizes of rocks.
200
What are three causes of physical weathering?
wind, water, and living things
200
Name three things that cause Chemical Weathering.
acids, water, and oxygen
200
What is the main cause of erosion?
What is moving water
200
a period of thousands of years when snow and ice cover much of the earth
What is ice age
300
Explain how living things can cause physical weathering. Give two examples.
Plants, animals, people
300
Minerals combine with oxygen in moist air to create___________________.
Oxides
300
a material formed when oxygen joins chemically with a mineral
What is oxide
300
The amount of erosion a stream causes depends on what three main things?
steepness of the land amount of water in a stream plants on the land
400
On what layer of the earth does weathering take place
the crust
400
Rain and water in the ground combine with carbon dioxide to form a __________________________
weak acid
400
______________crashing against the shore of a lake or ocean can move even huge rocks
What is waves
400
A large slow moving piece of ice
What is a glacier
400
How does wind cause erosion?
Wind can carry sand, rocks, pebbles, soil from one place to another.
500
Give three ways water can cause physical weathering.
freezing in cracks of rocks, waves grind rocks and sand together, running water slowly wears rocks.
500
Organisms such as _____________and _______________ grow on rocks.
What is moss and lichen
500
How does a glacier cause erosion?
As the glacier moves, rocks and soil become buried i its bottom and edges.
500
The dropping of sediments moved by erosion
What is deposition
500
soil, sand and rocks carried away by wind and water
What is sediment