Across
1
Tissue that contracts for movement
3
Particle of light
4
Unit of force
8
Amplified beam of light
9
Naturally occurring inorganic solid
Down
1
The Red Planet
2
Gas essential for breathing
5
Ball of burning gas in space
6
Hottest planet in solar system
7
Natural satellite of Earth
8
Curved glass that refracts light
10
Gas form of a liquid