Across
1
Mass per unit volume
3
Natural satellite of Earth
4
Gas essential for breathing
8
Amplified beam of light
11
Icy body with a tail near the sun
Down
2
Unit of electric potential
3
Tissue that contracts for movement
5
Magnetic metallic element
6
Molten rock beneath Earth surface
7
Unit of heredity
9
Absolute temperature scale unit
10
Unit of force