Across
1
Tissue that contracts for movement
4
Unit of energy
5
Naturally occurring inorganic solid
6
Element found in all living things
Down
1
Natural satellite of Earth
2
Curved glass that refracts light
3
Absolute temperature scale unit
6
Icy body with a tail near the sun
7
Disturbance that transfers energy
8
Push or pull on an object
9
Fourth state of matter
10
Particle of light