Weathering
Erosion
Deposition
Landslides & Avalanches
Surprise Me!
100
What is weathering?
the breaking apart of Earth's surface
100
What is erosion?
the movement of weathered rock
100
What is deposition?
the deposit, or dropping off, of pieces of the Earth's surface
100
What is a landslide?
a natural disaster that involves the swift movement of rocks, soil, mud, or sand downward
100
Give an example of weathering you wrote about in your weathering book.
cracks in pavement with plants, potholes, rust...
200
What is physical weathering?
the breaking down of Earth's size and shape
200
How can wind cause erosion?
It can blow away particles of sand, dirt, and pebbles.
200
What word in deposition do we circle to help us remember what it does?
Deposit
200
What is an avalanche?
a natural disaster that involved the swift downward movement of snow and ice
200
The four areas that contribute to weathering, erosion, and deposition are...
Plants, wind, water, ice
300
What is chemical weathering?
the changing of a rock's minerals as it breaks down
300
How can water cause erosion?
It can wash away sediment, soil, and rocks.
300
Where does deposition happen in relevance to weathering and erosion? First, second, or third?
Third
300
What is the main cause of both landslides and avalanches?
GRAVITY!
300
True or False: An avalanche could move at speeds of 60-80 miles per hour
True
400
Give an example of physical weathering.
ice freezing in cracks and pushing rocks apart, plants growing in cracks and pushing rocks apart, water rushing over rocks, wind wearing away rock
400
How can ice cause erosion?
Glaciers can pick up pieces of earth and move it along it it's path
400
Give an example of deposition
Dropping off of sand, rocks, soil from one place to another, glaciers dropping off pieces and landing on the ocean floor
400
Name one way landslides and avalanches are different.
moving ice/snow vs. soil/rocks/mud avalanches happen in colder climates avalanches can be caused by strong winds or man-made explosions landslides can be caused by heavy rain
400
True or False: an avalanche could be caused by loud noises
False
500
Give an example of chemical weathering.
acid rain, rust
500
How can plants cause and prevent erosion?
Plants can either push along sediment and pebbles as the roots grow. They can also hold the soil in place with the roots.
500
Name two landforms that can be caused by erosion.
river delta, beach, sand dunes
500
Describe how a sand dune could be formed. Tell how weathering, erosion, and deposition play a role.
Weathering-breaks down rocks into sand Erosion-sand blows or is washed away Deposition-sand is dropped off on the shore, the plants keep it from blowing away and it piles up
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