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Deposition group project

info for teaching deposition in science, January 2013

Ellie Fajer

on 22 January 2013

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Transcript of Deposition group project

Deposition Landforms that are created by deposition Forces on Earth that cause deposition Materials that make up beaches Deposition is when a river, wind, or other moving force on Earth picks up and carries a rock or soil and lays it down in a new place!! tornado Beaches Deposition This is an example of deposition. The river picks up small rocks and soil and then deposits them on the side, banks, and other parts of the river. Destructive Forces Destructive forces on Earth destroy and wear away landmasses. There are three main parts of destructive forces on Earth; they are: weathering, erosion, and deposition. Erosion is the wearing down of land by natural forces such as water, ice and wind. An example of erosion is a smooth rock in a river; water wore down at its corners and edges making it very smooth. Another example of erosion is a sand dune, wind constantly blows away grains of sand, changing its shape. Weathering is the rain, ice, wind, and temperatures that tear rock apart. An example of weathering is when a paved road get ice in it; as the ice expands, it cracks open the pavement and wears away at the pavement. Another example is acid rain, the acid in the rain wears away rock. The differences between these three things are that deposition basically just takes small pieces of sediment away, weathering just breaks down rock, and erosion wears away at rock and carries it away. Barrier islands Deltas flood tsunami rivers waterfall ocean wind What makes beaches? Why are there different materials? What is a barrier island Benefits of a barrier island What is a delta? Where are they found? Delta pictures Quiz!!!! True or false: a main material that makes up beaches is fish poop.
What is one benefit of having a barrier island?
What is one main difference between deposition, erosion, and weathering?
What are three landforms that are created by deposition?
What are three landforms or forces that cause deposition?
What is the average diameter of a grain of sand?
What is the name of a famous delta and where is it found? (Two part question means two pieces of candy!!!)
What is deposition and where is one place that it occurs?
What is a delta and where are they typically found?
What makes grains of sand so small?
What are two things that make up beach sand?
Why are some beaches in Hawaii green?
What are destructive forces? A barrier island is a sand deposit that lies parallel to shore, but is not considered part of the mainland. Rock fragments
Grains of quartz
Seashell fragments
Basalt-black sand(Hawaii)
Olivine-green sand(Hawaii)
Coral and shell fragments-white(Jamaica) Beaches are made of different materials because the ocean waves pick up different materials and push them to shore. The benefits of having barrier island are that you are protected from hurricanes, tsunamis, etc. because the island breaks down and stops the storm before it can get to you. They can also stop most large waves. Beaches, islands, river beds, deltas, sand bars, barrier islands, and alluvial fans are examples of landforms created by deposition. Deltas are found at the mouth of rivers, where they empty into a larger body of water. The Mississippi River Delta is at the mouth of the river, in the Gulf of Mexico. Waves! They bump sand grains together to make them about 0.06 mm-2 mm in diameter. This bumping not only makes the sand into smaller pieces, but also makes them rounder. A delta is a triangular tract of sediment deposited at the mouth of the river. A famous delta is the one at the mouth of the Mississippi river. Beaches are deposits of sediment parallel to the shore. Glaciers
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