Extra ?s
How is a delta created?
When a river meets a body of water, the water slows and the sediments deposit.
Name one type of fast change.
Volcano, Landslide, Earthquake, Flood
What is a valley?
a dip between mountains or hills.
How can you tell if something is a fast or slow change?
You can watch a fast change happen before your eyes. Slow changes take thousands of years.
How do volcanoes change the earth's surface?
Lava spews out of the volcano and solidifies, covering plants and changing the surface of the Earth.
What is the difference between a U-shaped and V-shaped valley? What are they created by.
U-shaped valleys are created by glaciers. V-shaped valleys are created by rivers.
Is the Grand Canyon a fast or slow change?
slow
What causes earthquakes?
Huge masses of rock move beneath Earth's surface and cause the ground to shake.
How are caves created?
Water runs through the ground and dissolves the limestone, creating a hole with an opening.
Is an earthquake a fast or slow change?
Fast
Name an example of how one fast change can trigger another fast change.
Earthquake- Avalanche
Earthquake-tsunami
Volcanoes-Earthquakes
What causes slow changes?
Weathering, erosion, deposition
What formation is both a fast and slow change?
Sand Dunes
What causes floods?
Heavy rain over a long period of time.
What's the difference between a canyon and a gorge?
Canyons are larger, and gorges have water running through them.