Across
1
Solid with repeating atomic pattern
3
Molten rock beneath Earth surface
4
Unit of heredity
6
Magnetic metallic element
8
Icy body with a tail near the sun
11
Unit of force
Down
2
Nerve cell in the brain
3
The Red Planet
5
Push or pull on an object
7
Amplified beam of light
9
Substance with pH above 7
10
Path of a planet around the sun