Across
1
Nerve cell in the brain
5
Fourth state of matter
6
Disturbance that transfers energy
7
Second lightest element
Down
2
Tectonic landmass section
3
Amplified beam of light
4
Gas essential for breathing
5
Glass that splits light into spectrum
8
Element found in all living things
9
Infectious microscopic agent
10
Push or pull on an object
11
Form of thermal energy