Across
1
Disturbance that transfers energy
3
Element found in all living things
4
Second lightest element
6
Absolute temperature scale unit
7
Tectonic landmass section
10
Hottest planet in solar system
Down
2
Molten rock beneath Earth surface
3
Basic unit of life
5
Naturally occurring inorganic solid
8
Precious yellow metallic element
9
Icy body with a tail near the sun
11
Substance with pH above 7