Across
- 3. The top level of groundwater in an aquifer.
- 7. The value of a digit multiplied by its place value.
- 8. The face value of any number in the place value system is itself.
- 9. The area of rock and soil groundwater flows through.
- 10. Usually an artificial lake that forms behind a dam.
Down
- 1. The level of the ocean’s surface.
- 2. The specific location of any number in the base ten system.
- 4. Something that is equal to something else.
- 5. The area from which water drains into a river
- 6. The measure of the amount of salt in the ocean.