Vocabulary
happens when there is very little rain for a very long time
What is a drought?
earthquakes create cracks in the surface of the Earth
What is a quick change- earthquake?
this state of matter does not change its size or shape
What is a solid?
this can be planted on sand dunes to help keep the sand in place
What is sea grass? The roots grow down into the sand and hold the sand in place.
happens when hot melted rock comes up out of the ground
What is a volcanic eruption?
The Colorado River carved the Grande Canyon
What is a slow change/ weathering and erosion?
this stage of matter does not change its size, but takes the shape of its container
What is a liquid?
when you see this sign, you should respect the property and the sandy dune
What is a "Keep off the Dunes" sign?
the shaking of the surface of Earth
What is an earthquake?
Streams and ponds dry up
What is a fast change- drought?
Droughts can happen in months/years, but weathering and erosion takes hundreds/thousands of years.
this stage of matter does not have a constant size or shape
What is a gas?
this can be placed on a sandy dune to trap the sand and build up the hill
What is a sand fence?
a pull to toward the center of the Earth
What is gravity?
this is water in its solid state
What is ice?
the part of the plant that can hold sand and rock in place and prevent erosion
What are the roots?
a tree grows in the crack of a rock and the roots break the rock apart
What is weathering/ slow change?
happens when lakes, rivers or streams overflow their banks
What is a flood?
this is water in the state of a gas
What is water vapor?
this is able to create mountains and islands
What is a volcano?
this can make a jagged rock smooth
What is moving water or wind? Erosion