Across
1
Magnetic metallic element
4
Preserved remains of ancient life
6
Blocking of light by a celestial body
8
Reddish electrical conductor
9
Disturbance that transfers energy
10
Unit of power
12
Element found in all living things
13
Measure of matter in an object
Down
2
Curved glass that refracts light
3
Absolute temperature scale unit
5
Center of an atom or cell
7
Force that attracts objects together
11
Tectonic landmass section