5.7B

Slow changes to the Earth's surface cause the formation of landforms. Complete the table below to explain the changes to the land. Match the answers to the correct boxes

Delta - (a)   ​

Sand Dunes - (b)  

Canyon - (c)  

U-Shaped Valley - (d)  

• DEPOSITION of sediment by water
• DEPOSITION of sediment by wind
• EROSION of sediment by water
• EROSION of sediment by glacier

How have the mountains changed over time?

• The river didn't do anything. The glaciers did.

• The river became bigger by erosion

• The river became bigger by weathering

• The river became bigger by weathering (sediment) and erosion

The mountains have been ​ (a)   and ​ (b)   . They are lower and more rounded than they were at beginning. Some eroded ​ (c)   from the mountains have filled the valley, which is now wider, flatter, and shallower.

• sand
• glaciers
• sedimentary rock
• weathered
• eroded
• sediments

Before, the river was flowing through a narrow, rocky valley. Because the river is now flowing through a ​ (a)   valley that is made of softer materials, its course begins to change. As the river flows, it ​ (b)   the ​ (c)   in the valley floor, causing it to develop large turns and curves.

• sand
• glaciers
• sedimentary rock
• erodes
• sediments
• wider

How do Sand Dunes form?

• Sediment is eroded by glaciers

• Sediment is deposited by wind

• Sediment is eroded by wind

• Sediment is deposited by water

How do Canyons form?

• Sediment is eroded by glaciers

• Sediment is deposited by wind

• Sediment is eroded by water

• Sediment is deposited by water

How do U-shaped valleys form?

• Sediment is eroded by glaciers

• Sediment is deposited by wind

• Sediment is eroded by water

• Sediment is deposited by water

How do V-shaped valleys form?

• Sediment is eroded by glaciers

• Sediment is deposited by wind

• Sediment is eroded by water

• Sediment is deposited by water

How do deltas form?

• Sediment is eroded by glaciers

• Sediment is deposited by wind

• Sediment is eroded by water

• Sediment is deposited by water

Great amounts of force were applied to a large rock and caused it to crack!

The forces that caused the crack in the rock formation were most likely caused by...

• Ocean waves weathering the rock

• Water freezing and thawing in the rock

• a glacier passing over a rock

• wind creating a tunnel through the rock