- 2 types of Igneous rocks: Extrusive,Intrusive
- 3 main types of rocks: Igneous,Sedimentary,Metamorphic
- Compressional: Two plates pulling together
- Contenential Crust: A part of the crust.(land)It is 30-70 km thick
- Crust: The 1st layer of the earth.What we live on.
- Extentional: Two plates pushing away
- Extrusive: A rock formed on earth,by lava
- Fossil: A item that proved our earths history structure
- How many plates are there?: 10 major ones and many small ones
- Igneous: A rock formed by lava
- Inner Core: it is 1,200 km thick and it is solid.
- Intrusive: A rock formed in earth,by lava
- Lower mantle: it is 2,500 km thick, and it is solid.
- Metamorphic: A rock formed by heat and pressure
- Oceanic Crust: A part of the crust.(ocean) 6 km thick.
- Outer Core: it is 2,300 km thick and it is liquid and solid.
- Pangea: A super continent that existed around 300 to 250 million years ago.
- Sedimentary: A rock formed by erosion
- Transform: Two plates going the opposite way.
- Upper Mantle: 400 km thick. it is liquid.
- What creates our magnetic field: The internal of earth spinning.