geography test march 26th
Terms
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- faulting
- moving along layers of the earths crust
- Sedimentary rock
- rock usually formed in layers from the compression of sediments over millions of years
- plate tectonics
- Theory which states that the earth's outer shell consists of plates that move causing earthquake.
- geologic time
- history of the earth from its formation to the present
- erosion
- Wearing away of the earth's surface followed by the movement to other locations of other materials that have worn away.
- eras
- major division of geological time
- Igneous rock
- rock formed from cooled molting rock
- folding
- bending of rock layers
- canadian shield
- large area of prehistoric rock that forms Canada
- Glaciers
- A very slow moving mass of ice
- Ice age
- period of time when freezing temperatures caused ice sheets across continents
- metamorphic rock
- type of rock formed when sedimentary and igneous rocks ate subjected to great heat and pressure
- fossils
- imprint in a rock of an animal or plant that live millions of years ago.