How can beavers change the surface of the Earth?
They chew trees until they fall down and make their homes (dams/lodges) with them, which can block water.
Where do small rocks, dead plants, and dead animals go?
SOIL.
What is the biggest difference between mountains and valleys?
ELEVATION. Mountains are high land and valleys are low land.
How can people change Earth’s surface? Name TWO ways.
cut down trees, smooth out land, dig lakes/ponds, build houses, etc.
What's moving water that flows into a lake or ocean called?
RIVER.
What is sand made of? How's it made?
Tiny pieces of rock broken down by ocean waves, wind, etc.
What's it called when rock and soil and are moved to a new place by wind and water?
EROSION.
What's is called when weather changes the size and shape of rocks?
WEATHERING.
What's happening in this picture?
The ROOTS of a tree are splitting the rock.
How can plants help to prevent erosion?
They hold the soil in place so wind and water can't move it.