Students have a test over Unit 3, Ecosystems on Thurday, September 15th.  They should review their study guide and study vocabulary. 

We begin Unit 4 on Monday, Earth: Soil/Rocks.  The vocabulary is :

Science Earth: Soil/Rocks Vocabulary Words:
1. soil- earth material made up of weathered rock, humus, water, and air
2. rock- earth material made up of one or more minerals
3. igneous-type of rock formed from magma or lava that cools and hardens
4. sedimentary- type of rock formed  when layers of sediment compact and cement
5. metamorphic- type of rock formed from heat and pressure
6. rock cycle- when one rocks turns into another rock
7. fossil- preserved clue to the past
8. crust- outer earth layer that we walk on
9. mantle- middle, thickest earth layer
10. core-center layer of earth