Across
1
Unit of electric potential
3
Gas essential for breathing
4
Unit of heredity
7
Push or pull on an object
10
Particle of light
Down
2
Unit of force
4
Force that attracts objects together
5
Molten rock beneath Earth surface
6
Element found in all living things
7
Preserved remains of ancient life
8
Blocking of light by a celestial body
9
Absolute temperature scale unit