Earth's system that has to do with gases around the Earth.

Earth's system that has to do with rocks, Earth’s crust and mantle.

Earth's system that has to do with living organisms: plants, animals and humans.

_____________________ is the breaking down or dissolving of rock, minerals and sediments on the Earth’s surface.

____________________is when physical processes, like ice or wind, break down rocks.

_______________is when chemicals change what rocks are made of.

Weathering and erosion are different because weathering is breaking down rocks and erosion is transporting those broken down pieces.

_________________is the transporting of broken down pieces.

Weathering happens after erosion.

Mechanical weathering is the physical processes that break down rocks.

Chemical weathering is chemicals that change what rocks are made of.

Mechanical and Chemical weathering are the same.