What is the difference between an aqueduct and a viaduct?

Related questions

1. What were aqueducts made of?
2. Why is the aqueduct important to us today?
3. Did Aztecs have aqueducts?
4. What is the importance of the aqueduct?
5. How long does it take to build an aqueduct?
6. Did Romans have indoor plumbing?
7. Are aqueducts still used?
8. How are aqueducts built?
9. Did the Aztecs use aqueducts?
10. How long did it take to build an aqueduct?

Tags

1. #carries
2. #spans
3. #viaduct
4. #between
5. #other
6. #difference
7. #convey
8. #bridge
9. #several
10. #obstacles
11. #aqueduct
12. #constructed
13. #artificial
14. #channel
15. #traffic
16. #while
17. #valley
18. #another
19. #location
20. #water
21. #nouns