Across
1
Mass per unit volume
5
Molten rock beneath Earth surface
6
Magnetic metallic element
7
Our home planet
Down
2
Positive particle in nucleus
3
Unit of power
4
Ball of burning gas in space
8
Amplified beam of light
Mass per unit volume
Molten rock beneath Earth surface
Magnetic metallic element
Our home planet
Positive particle in nucleus
Unit of power
Ball of burning gas in space
Amplified beam of light