Across
- 2. Matter that absorbs thermal energy but does not change state or significantly increase in temperature
- 4. A river of ice, formed from snow accumulated over hundreds of years, that moves slowly downhill under the force of gravity
- 5. Water that seeps through soil and cracks in rock; source of water for underground springs and wells
- 7. A substance used to provide nutrients to plants, usually for the purpose of increasing crop production
- 9. An undesirable substance in a mixture
- 11. Water that contains feces and urine; also called “sewage”
- 12. An area from which all water drains downhill to a common destination
- 13. The change of state from a solid to a gas without first becoming a liquid
- 16. Solid or liquid water that falls to Earth’s surface
- 17. An area of flat land that is flooded when a river overflows its banks
- 19. The change of state from a gas to a solid without first becoming a liquid
Down
- 1. The process called in which organisms are used to remove contaminants from the environment
- 3. Not clear; containing tiny specks of sediment or other solid matter
- 4. Water that has been used for cooking, laundry, bathing, or similar tasks
- 6. A chemical substance used to kill animal pests; often used to kill insects that damage crop plants
- 8. A measure on how much thermal energy a particular object can store
- 10. artificially raising the temperature (for example, of water)
- 14. A large area of ice that permanently covers land
- 15. A chemical substance used to kill or slow the growth of certain plants; often used to kill weeds that compete with crop plants
- 18. A geological formation of loose rock or soil that is saturated with groundwater