Across
1
Amplified beam of light
4
Path of a planet around the sun
5
Chemical element in table salt
8
Unit of energy
11
Smallest unit of an element
Down
2
Magnetic metallic element
3
Molten rock beneath Earth surface
6
Preserved remains of ancient life
7
Measure of matter in an object
9
Precious yellow metallic element
10
Form of thermal energy