Science AIR Practice #4

2. A missing rock layer forming a gap in Earth's geologic history.
6. Is the energy an object has due to position, condition, or chemical composition.
12. When 2 tectonic plates are moving away from each other.
14. The process by which one tectonic plate is pulled beneath another plate.
17. A force of attraction between 2 objects with mass.
19. A testable idea or explanation that leads to scientific investigation.
20. The sum of kinetic and potential energy.
21. The time period that began with the formation of Earth about 4.6 billion yeas ago.
23. A material through which charges cannot move easily.

1. A network of satellites orbiting Earth.Used to navigate as well as collect data.
3. A horseshoe lake that is formed that was once part of a river.
4. The factor that changes as a result of changing the independent variable.
5. When streams empty into a body of water and deposit their load in a fan-shaped pattern.
7. Cell division for sexual reproduction.
8. A well supported explanation of nature. They help us understand the laws we observe.
9. Data that shows change over time
10. The tendency of all objects to resist a change in motion.
11. Cell division for reproduction, growth & repair.
13. A large mass of moving ice that forms by the compacting of snow by natural forces.
15. Process by which eroded material is dropped.
16. A description of a specific relationship under given conditions in the natural world. Describes the way the world works.
18. Means accepting risks in exchange for benefits or giving up one benefit for another.
22. fan A fan-shaped deposit that forms on dry land.