Across
1
Glass that splits light into spectrum
4
Force that attracts objects together
6
Path of a planet around the sun
9
Curved glass that refracts light
Down
1
Tectonic landmass section
2
Smallest unit of an element
3
Chemical element in table salt
5
Magnetic metallic element
7
Disturbance that transfers energy
8
Our home planet
10
Unit of electric potential