Across
- 3. imaginary line that divides the earth into half
- 4. the shape of the moon's sunlit portion as seen from Earth.
- 6. resources raw material that comes from the environment and is used to make the products people need
- 7. a process in which rocks are continuously transformed between the three rock types igneous, sedimentary and metamorphic.
Down
- 1. water stored beneath the Earth’s surface
- 2. the study of the physical features and history of Earth
- 5. cycle a continuous, circular cycle.