Across
1
Disturbance that transfers energy
2
Force that attracts objects together
4
Our home planet
5
Glass that splits light into spectrum
8
Chemical element in table salt
9
Precious yellow metallic element
Down
2
Unit of heredity
3
Molten rock beneath Earth surface
6
Magnetic metallic element
7
Naturally occurring inorganic solid
10
The Red Planet
11
Unit of force