Across
1
Measure of matter in an object
2
Compound containing oxygen
3
Element found in all living things
5
Basic unit of life
6
Tectonic landmass section
9
Ball of burning gas in space
10
Magnetic metallic element
Down
1
Tissue that contracts for movement
4
Unit of energy
6
Particle of light
7
Glass that splits light into spectrum
8
Preserved remains of ancient life
11
Form of thermal energy