Across
- 2. landform that forms from the deposition of sediment at the mouth of a river
- 4. The rock was ____ so water could easily move through it.
- 7. There are many types of rocks and minerals that make up the ____ of the Earth.
- 10. During ____ sediments get carried to the bottom of the ocean.
- 11. _____ is an important source of drinking water.
- 13. There are many different types of ____. Some are edible and some are not
- 14. layer of permeable rock that allows water to flow through
- 15. the loose top layer of the Earth's surface made of weathered rock and organic matter
- 16. all frozen water on the Earth
- 17. substance with a pH higher than 7
- 19. underground opening that can form when acidic groundwater dissolves limestone
- 20. living things and things that support life
Down
- 1. substance with a pH lower than 7
- 3. the gases that surround the Earth
- 5. ______ is important for plants because water soaks into the soil.
- 6. A satellite was launched into orbit to monitor melting ___ in the Artic.
- 8. The ______ is all of the water on the Earth, including frozen forms.
- 9. mound formed when windblown sediments pile up behind and obstacle
- 12. Water may take different amounts of time to _____ through the ground.
- 18. Because of ____, the beach has decreased in size.