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