1. Sand dunes, Canyons and Deltas
5th grade Science

2. What is a delta?
an area at the end of a river where sediments are deposited and build up

3. How are deltas formed?
Weathering
Erosion
Deposition

4. How are deltas formed?
When a river reaches a lake or sea, the water slows down
The sediments are then dropped at the *mouth of the river.
When ocean waves cannot carry the sediments out to the ocean, a delta is formed.

5. Where can you find a delta?
At the mouth of a river
The mouth of a river is where a river meets the ocean.

6. What shape is this delta?

7. How is a delta formed?
Deposition by water

8. What is a Sand dune
A hill of sand piled up by the wind

9. How is a sand dune formed?
Weathering
Erosion
Deposition

10. How is a sand dune formed?
Dunes may form wherever there is a lot of loose sand and enough wind to move it.

11. Where can you find a sand dune?
Beaches and deserts are common places for dunes.

12. Which way was the wind blowing from?

13. How are sand dunes formed?
Wind Erosion and deposition

14. A deep cut within the Earth’s crust
What is a canyon?
A deep cut within the Earth’s crust

15. Water cuts through the land over millions of years creating a canyon
How was it formed?
Erosion by water
Water cuts through the land over millions of years creating a canyon

16. What is an example of a canyon?
Palo Duro Canyon in Texas
Grand Canyon in Arizona

17. How is a canyon formed?
Erosion by Water