Solve these clues to fill the grid.
- The person who leads a musical group
- 2 Across
- Traveling across
- 7 Across
- A wheeled vehicle consisting of a self-propelled ___ that is used to draw trains along railway
- 8 Across
- The sound made by something moving rapidly or by steam coming out of a small aperture
- 9 Across
- A car on a freight train for use of the train crew
- 10 Across
- A person who uses scientific knowledge to solve practical problems
- 1 Down
- Line that is the commercial organization responsible for operating a system of transportation
- 3 Down
- Any nonverbal action or gesture that encodes a message
- 4 Down
- Light in a transparent protective case
- 5 Down
- A line or route along which something travels or moves (plural)
- 6 Down