Across
1
Absolute temperature scale unit
4
Force that attracts objects together
5
Magnetic metallic element
7
Our home planet
8
Precious yellow metallic element
11
Unit of heredity
12
Natural satellite of Earth
Down
2
Push or pull on an object
3
Path of a planet around the sun
6
Gas essential for breathing
9
Second lightest element
10
Element found in all living things