Across
1
Precious yellow metallic element
3
Hottest planet in solar system
5
Element found in all living things
8
Reddish electrical conductor
9
Force that attracts objects together
11
Solid with repeating atomic pattern
12
Naturally occurring inorganic solid
14
Curved glass that refracts light
Down
2
Gas essential for breathing
4
Blocking of light by a celestial body
6
Chemical element in table salt
7
Unit of force
10
Molten rock beneath Earth surface
13
Push or pull on an object
15
Amplified beam of light