Vocabulary
The breaking down of rocks into smaller pieces.
Weathering
How can ice cause weathering?
When water gets into small cracks in rock then freezes it can cause weathering. Water expands as it freezes pushing the rock apart, breaking it into smaller pieces.
What can move rocks across Earth's surface?
Moving water, wind, ice, and gravity.
What is the action of removing valuable rocks from the land?
Mining
The weathering away and movement of weathered rock.
Erosion
How can a plant cause weathering?
Plants can grow in the cracks of rocks. Their roots can also grown and push on rocks or grow into the cracks causing them to split and break.
When water flowing over the surface slows down, what happens to the rocks carries by the water?
The rocks are dropped or deposited.
What should people do after clearing land of trees for logging?
Replant trees to replace the trees that were cleared?
A mass of ice that moves slowly across the land.
Glacier
How can running water cause weathering?
Running water can pick up small rocks and they will then bump into other rocks breaking them apart.
How does gravity cause erosion?
Gravity pulls rocks and soil downhill. As they move they bump against other rocks causing them to break apart.
Why is it bad to drain swamps and ponds?
The dry soil can be blown away by the wind.
The dropping off of weathered rock.
Deposition
How can wind cause weathering?
Wind can pick up small rocks, or sand, as these small objects are blown around they bump into other rocks breaking them down.
How does a glacier cause erosion?
As they move across the Earth's surface, the ice at the bottom freezes to rocks. The frozen rocks move with the glacier then are deposited in a new place when the ice melts.
When we dig canals for boats does this change the land?
Yes
The act of digging and removing valuable rock from the Earth.
Mining
What causes weathering?
Running water, wind, rain, and temperature changes.
What is the word for "dropping off of weathered rock"?
Deposition
Why would people need to clear land of trees?
To have material and space to build.