Across
- 3. Measured by engineers to prevent flooding
- 5. Used to power homes and cars. Starts with E.
- 12. Brings water under roads
- 14. Starts with A and carries water
- 16. Crosses natural features
- 19. Bringing water to dry areas for plants to grow
- 20. This is a material that is strong and used for buildings, cars, and rings.
- 21. Systems are _________ by engineers for safety. Begins with O.
- 22. Beams used for floors
- 23. A measure of quantity produced that starts with Y.
- 26. These move sand and rock on coasts and can be dangerous.
Down
- 1. This is a method of testing welds.
- 2. Something used to carry water underground
- 4. A structure that keeps flow in river channels
- 6. The type of system where you find trees, plants, and bugs.
- 7. This is used by cars and trucks to carry people across the land.
- 8. An invasive species that has stripes on it's shell.
- 9. The water cycle
- 10. This is a measure of how much that begins with Q.
- 11. These control flow of both liquids and gases.
- 13. These carry trains across mountains and plains
- 15. These are known as ________ and include water, sewer, and electricity.
- 17. The measure of weight equal to 2.2 pounds in the metric system.
- 18. Leveling the land before construction
- 24. Stores water up in the hills
- 25. A useful tool studied in school