Weathering
What is weathering?
the breaking down of rocks
What is erosion?
The movement of sediment.
What is deposition?
True or false: physical and chemical weathering can happen at the same time.
True
What are the 2 types of weathering?
Physical and Chemical
What factor erodes sediment?
water, wind, ice, and gravity
What causes rocks and sediment to deposit?
The lose of energy.
true
What are 2 examples of physical weathering?
ice wedge
abrasion
tree roots
animals digging
what is a delta?
Sediment that has deposited out a river near the ocean.
What is sediment?
The smaller fragments of weathered rock.
What are 2 examples of chemical weathering?
acid from rain
oxidation
acid from plants
acid from solution
dissolving
How can water and gravity work together to weather and erode rocks?
gravity will pull water down hill and the moving water will use its energy to weather and erode rocks as it travels down hill.
How do delta's form?
Rivers go near ocean and deposit the sediment as it loses energy.
Does weathering, erosion and deposition make for better soil? Explain.
Yes, it allows rocks to be broken down and gather in places for plants to grow and get nutrients.
Explain what would weather faster, boulder or pebbles? Explain why.
Pebbles because boulders are larger so its harder for wind and water to effect the boulder like they would with pebbles.
How can a stream become a river?
As the water moves, it will erode the sediment making more room for water flow.
If sediment starts to deposit, what would eventually happen to water?
As the glacier moves across the land it will erode large amounts of rock and leave valleys behind.