Across
1
Magnetic metallic element
4
Unit of heredity
5
Reddish electrical conductor
6
Tectonic landmass section
7
Icy body with a tail near the sun
11
Molten rock beneath Earth surface
13
Solid with repeating atomic pattern
14
Unit of force
Down
2
Center of an atom or cell
3
Force that attracts objects together
8
Disturbance that transfers energy
9
Push or pull on an object
10
Path of a planet around the sun
12
Our home planet