200
__________ is when rocks are broken up by physical, chemical or biological processes.
_______ is the movement of loose and weathered rock.
__________ are scientists who study rocks and the earth.
___________ rocks are formed from layers of sediment.
_______ rocks form when molten (liquid) rock cools down.
Igneous, sedimentary and ___________ rocks were the first rock types we learned of in the Geography class.
_________ is a sedimentary rock consisting mainly of calcium carbonate.
________ weathering is when acid rain falls and reacts with the minerals in the rock.
________ weathering is when the forces make cracks in the rocks when they are heated and cooled over and over again.
__________ weathering is when plants grow into the cracks of the rocks causing the rocks to break apart.
Fragments of rock can be ___________ by moving water, wind or ice.
When the water or wind slows down, or the ice melts, the fragments of rock are _________ as layers of sediment.
