Across
- 5. rock through which water can hardly flow
- 6. process of humans artificially watering land to help plant growth
- 7. rock containing fine holes that allow water to flow through
- 9. a type of rock that is formed from sediments layered on top of one another
- 10. the decline of groundwater levels due to the act of pumping too much fresh water from a well
- 12. material made of carbon that comes from plants, animals, and their waste products
- 15. the capability of a substance to allow fluids to flow through it
- 19. the level at which the ground becomes saturated
- 22. the interaction of tectonic plates, either pushing or rubbing together, or pulling apart from each other
Down
- 1. a natural process that forms and shapes the Earth's surface
- 2. a layer of underground rock that contains groundwater
- 3. the water found underground in the cracks and spaces in soil, sand, and rock
- 4. a relationship that exists between two or more variables
- 8. unable to be restored, replaced, or made new again once used
- 11. a mineral-bearing rock that generally contains metal but can contain other valuable minerals, like gems
- 13. unlikely to run out, capable of being replaced or restored as quickly as it is used
- 14. a usable stock or supply
- 16. the edge where two tectonic plates meet
- 17. hot, molten rock found deep beneath the Earth’s surface—if magma erupts onto the Earth’s surface, as in a volcanic eruption, it is called lava
- 18. of, or relating to, or based on a science that deals with the history of the Earth and its life especially as recorded in rocks
- 20. fuel (such as coal, oil, or natural gas) formed in the Earth from plant or animal remains
- 21. small solid materials, like sand, that are carried by air or water and settle at the bottom of bodies of water, such as on riverbeds or the ocean floor