A satellite image of an area in Florida shows a river with bends along its length. A second satellite image taken of the same area 3 years later shows the same river with an expanded course. What is the best explanation for the difference in the shape of the river's course between the two satellite images?

Water eroded the banks of the river and deposited the eroded soil on opposite banks, causing the river to form tighter bends

Wind blew waves across the water surface, eroding away the bank on one side of the river until the river's course changed its shape

Regular freezing and thawing of the river split the soil along the river banks, changing the shape of the river

Acid rain chemically weathered the banks along the river, forcing the river to wind back and forth

Plants prevent soil erosion by-

holding dirt in place with their roots

releasing water into the atmosphere through transpiration

bits of rock, sand, and silt caused by the weathering of rocks

the process of rocks being broken down and carried away

decaying plant or animal material

How does freezing water cause the weathering of rocks? The freezing water—

expands cracks and breaks rocks

causes rocks to fall in landslides

What is mechanical weathering?

Process through which rocks are physically broken into smaller pieces.

Rocks are broken down through chemical changes.

Rocks are worn away from acid in plant roots.

Rocks broken down by machinery.

Acid rain is an example of chemical weathering because

pollution gets dissolved in water and falls as rain dissolving rocks over time.

rain connected to dust falls and hits rocks so hard they break.

there is friction between rain and rocks.

Weathering, Erosion, and Deposition

Authored by Melanie Reeves

Other Sciences

4th - 5th Grade

Used 22+ times

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Flood water pounding against a canyon wall and wearing it down

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Rain washing away soil from a hillside

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Deltas forming at the mouths of rivers

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Weathering, Erosion, and Deposition

Flood water pounding against a canyon wall and wearing it down

Rain washing away soil from a hillside

Layers of sediment forming at the bottom of the ocean floor

Glaciers dropping rock and sand to form moraines (deposition of debris)

Waves dropping sand on the beach

Caves being formed by acid rain dissolving underground limestone

Deltas forming at the mouths of rivers

Water getting into cracks, freezing, and breaking the rocks or pavement apart

Wind blowing sand from one location to another

Wind blasting sand at rock and carving out arches

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