Science - Rocks Study Guide

Here is a list of things to know, concerning our recent Rocks Unit in Science:

1. There are three kinds of rocks: igneous, metamorphic, and sedimentary
2. Weathering is the wearing down of rocks into smaller pieces (sediment).
3. Erosion is the movement of sediment, and deposition is the collection of sediment.
4. Each of the three kinds of rock can turn into each other through heat/pressure or weathering.
5. Rocks contain minerals which become part of our soil - vegetables absorb these minerals, and animals eat those vegetables, so rocks are a part of our diet!
6. Mountain building is caused by movement of the Earth's tectonic plates (earthquakes).
7. Islands can be formed by volcanic explosions that build up land mass so it is above sea level.