Across
1
Disturbance that transfers energy
3
Element found in all living things
4
Infectious microscopic agent
5
Preserved remains of ancient life
7
Tectonic landmass section
9
Force that attracts objects together
Down
1
Unit of power
2
Blocking of light by a celestial body
6
Reddish electrical conductor
7
Particle of light
8
Unit of force
10
Unit of electric potential