Transportation crossword #3 (level 4)

Across

1. 1 Shoes with wheels. (6 letters)
6. 6 It floats and sails. (4 letters)
7. 7 It runs on rails. (5 letters)
9. 9 It flies with a big rotor. (10 letters)
11. 11 It takes sick people to the hospital. (9 letters)
13. 13 It turns under the vehicle. (5 letters)
14. 14 It goes into space. (6 letters)
15. 15 Planes take off from there. (7 letters)

Down

2. 2 It goes around the wheel. (4 letters)
3. 3 Boat that travels underwater. (9 letters)
4. 4 Two wheels with an engine. (10 letters)
5. 5 Car you pay to ride in. (4 letters)
8. 8 Very big boat. (4 letters)
10. 10 Hot air makes it fly. (7 letters)
12. 12 Two wheels and pedals. (4 letters)
14. 14 Cars drive on it. (4 letters)