Weathering
What process breaks rocks into smaller pieces?
What is weathering?
What process moves sediment from one location to another?
What is erosion?
What process occurs when sediment is dropped or settles?
What is deposition?
What landform can form where a river enters a larger body of water and deposits sediment?
What is a river delta?
Complete the pattern:
Weathering = BREAK
Erosion = ______
Deposition = ______
MOVE; DROP
Water freezes inside a crack in a rock and makes the crack larger. What process is occurring?
What is weathering?
Name one force that can cause erosion.
Water, wind, ice/glaciers, or gravity.
Water slows down and drops sand and soil. What process occurred?
What is deposition?
What landform can be created when wind deposits sand?
What is a sand dune?
A rock breaks into pieces, but the pieces stay in the same location. What process occurred?
Weathering.
True or False: Weathering moves sediment to a new location.
False. Weathering breaks material down; erosion moves it.
A river carries sand downstream. What process is happening?
What is erosion?
Is deposition usually considered constructive or destructive?
Constructive, because it can build new landforms.
Is a river delta mainly created by erosion or deposition?
Deposition.
A river carries sediment for 10 miles and then drops it. Name the two processes in order.
Erosion → Deposition
Plant roots grow into cracks and break rocks apart. What caused the weathering?
What is a living organism/plant?
A large mass of soil and rocks suddenly moves down a hill. What is this called?
What is a landslide?
Wind drops piles of sand in a desert. What landform could develop?
What is a sand dune?
A huge mass of moving ice changes Earth's surface by carrying rocks and sediment. What is it?
What is a glacier?
A student says, “A river delta is formed by erosion because rivers carry sediment.” What is wrong with this argument?
Erosion carries the sediment, but deposition builds the delta when the sediment is dropped.
Explain the difference between weathering and erosion
Weathering breaks Earth materials down; erosion moves them.
During a flood, water carries large amounts of soil away from a riverbank. Is this constructive or destructive? Explain.
Destructive, because erosion removes Earth materials and changes/damages the riverbank
Explain how erosion and deposition can work together.
Erosion moves sediment, and deposition drops that sediment somewhere else.
Explain how a river delta gets larger over time
The river erodes and carries sediment, then slows near its mouth and deposits the sediment. Repeated deposition builds the delta.
Explain how one river can cause both destructive and constructive changes to Earth's surface.
A river can cause erosion, which removes soil and rock, and deposition, which drops sediment and can build new landforms such as deltas.