Chapter 2
by Hannah S., Andrea S.
Earth's Structure
- layers of the earth are inner core, outer core, mantle and crust
- crust is made on plates that hold continents and oceans in place
- plates form mountains when converging
- they form canyons and valleys when diverging
- they can form faults while transforming and rubbing
- there is a zone of active volcanos and earthquakes called The Ring of Fire
Weathering and Erosion
- Weathering is the process that breaks down sediment
- erosion is the movement of the broken down sediment
- there are two basic kinds of weathering Physical and chemical
- Wind erosion involves the movement of dust, sand and soil
- glaciers pick up rock and sediment while they are slowly moving
- water erosion is when water flows and wears away sediment