Across
1
Tissue that contracts for movement
3
Element found in all living things
4
Force that attracts objects together
6
Blocking of light by a celestial body
7
Reddish electrical conductor
11
Nerve cell in the brain
Down
2
Form of thermal energy
3
Solid with repeating atomic pattern
5
Naturally occurring inorganic solid
8
Unit of force
9
Tectonic landmass section
10
Gas essential for breathing