Earth changes quickly
What is a mountain that has a hole at the crater at the top and has hot lava comes out when it's erupting?
Volcano.
What are three ways Earth changes slowly?
Weathering, Erosion and Deposition.
A farmer tries to slow down erosion of the land. A nearby river floods. I carries away good soil from the farm. Wind blows the soil away.
What could the farmer do to help stop the soil from blowing away?
Build a windbreak.
A sudden shaken of the ground. This can cause buildings to fall, tear apart roads and might cause large cracks in the ground.
Earthquake.
What is weathering?
The breaking down of rocks.
What could the farmer do to slow down water erosion?
Build a levee.
A __________ happens when there is heavy rain for a long time. It is also a large amount of water that covers land that is not usually covered by water.
A flood.
What is erosion?
Happens when soil, sand, and small bits of a rock are removed.
What is a long wall built to hold back ocean water?
A Dike
What is a landslide?
Is when the side of a hill or a mountain falls down. Usually caused by an Earthquake, volcano, heavy rain or floods.
This happens when wind and water drop sand, soil, and small bits of rocks into a new place.
Deposition.
People build __________ along rivers to hold back rising water.
Dams.
What happens when hot lava from volcanoes cool and hardens?
It turns into solid rocks.
A child is playing at the beach. A wave comes along. What will happen to the sand next?
Erosion.
A ___________ is short wall along a river.
Levee.