Weathering
What is weathering
Weathering is the slow process that breaks down materials
Give an example of weathering
The process of breaking apart
What is erosion?
The movement of weathered material
What is the likely cause of erosion in the mountains?
Wind and water
What is deposition?
Deposition is the dropping off of eroded soil and bits of rock
It freezes and expands
What are TWO things that do not cause weathering to rocks?
a) flowing water
b) sunlight
c) clouds
d) wind
Sunlight and clouds
What is sediment?
loose, solid material—including sand, clay, silt, and minerals—transported and deposited by water, wind, or ice.
What is the likely cause of Erosion at the beach?
Wind and water
Does deposition move rocks or drop rocks?
Drop rocks
What are some processes of weathering that can change the shape of a rock?
Wind, water and ice make small pieces break away
What is NOT a form of weathering?
a) rocks rubbing against each other
b) Ice grinding rocks
c) Plant roots growing through rocks
d) Water moving particles from rocks downstream
d) Water moving particles from rocks downstream
How does planting shrubs, grass or trees stop erosion from occuring?
Plants roots hold dirt in place and absorb water
What is the likely cause of erosion in a river?
Water
Which two processes can cause small pebbles to pile up at the bottom of a rocky hill?
a) Erosion & weathering
b) Weathering & deposition
c) Erosion & deposition
d) Weathering and run-off
c) Erosion & deposition
What is an example of weathering from ice?
Water freezing inside of rocks, breaking them apart
What is the most likely cause of weathering in the beach?
Wind and water
Which process changes the shape of rock layers over time?
a) Deposition
b) Erosion
c) Evaporation
d) Faulting
b) Erosion
How does ice change the Earth's surface by erosion?
a) Water freezes in the cracks of a rock causing bigger cracks to form
b) A mound of rock is LEFT as a glacier ice melts and the glacier retreats
c) Sediment is frozen in the ice of a glacier moves the glacier moves
d) Heavy ice presses down on sediment causing the formation of sedimentary rock
c) Sediment is frozen in the ice of a glacier moves the glacier moves
a) deposition
b) weathering
c) erosion
d) compaction
a) deposition
What interaction between water and Earth materials (rocks) is an example of the weathering process?
Water freezes in tiny holes inside a rock, breaking the rock apart as ice expands
What is the most likely cause of weathering to a mountain?
Ice and wind
How was the Mississippi delta formed?
Water erosion and deposition formed because sediment from the river was deposited in the gulf
What are two things people can do to stop erosion from happening on a hillside?
a) Plant shrubs, grass, tress to hold soil in place with their roots
b) Build channels to help control water flow away from hillside
c) Dig big holes to allow water to collect inside instead of downhill
d) Carve out the hillside to make it steeper to help water move quicker
a) Plant shrubs, grass, tress to hold soil in place with their roots
b) Build channels to help control water flow away from hillside
A delta is made of silt that drops out of the water. The formation of a river delta is an example of what process?
a) Deposition
b) Weathering
c) Erosion
d) Compaction
a) Deposition