Across
1
Smallest unit of an element
4
Form of thermal energy
6
Positive particle in nucleus
7
Natural satellite of Earth
Down
2
Force that attracts objects together
3
The Red Planet
5
Nerve cell in the brain
8
Magnetic metallic element
Smallest unit of an element
Form of thermal energy
Positive particle in nucleus
Natural satellite of Earth
Force that attracts objects together
The Red Planet
Nerve cell in the brain
Magnetic metallic element