Erosion
What is erosion?
The movement of sediment
The breaking down of rocks and minerals into smaller pieces
What is deposition?
The dropping of eroded sediment in a new location
What is a mountain?
A landform that is much higher than the land that surrounds it
What causes erosion?
What is sediment?
The smaller pieces of minerals and rocks
What is soil?
A mixture of sediment, water, air, and humus
What is a valley?
A low landform that lies between hills or mountains
Give an example of erosion
Wind blowing soil out of a field
What is physical weathering?
It changes the size and shape of rocks by scraping, pounding, grinding, and splitting
What do most plants grow in?
Soil
What is topography?
All the landforms in a particular region
Weathering and erosion are both what kind of processes?
Destructive
What is chemical weathering?
It changes the makeup (or composition) of rocks into different minerals
What is humus?
Decayed wastes and remains of living things
What is a plain?
A landform that is wide and flat with very few hills or valleys
What is the top cause of weathering, erosion, and deposition?
water
Give an example of physical weathering
Tree roots growing into small cracks of a rock, then growing and splitting the rock
Give an example of deposition
When moving water slows down, sand and gravel can deposit on the bank of a stream or river
What is a plateau?
A flat landform that is higher than the land surrounding it