Across
1
Form of thermal energy
3
Push or pull on an object
5
Disturbance that transfers energy
6
Biological catalyst
7
Second lightest element
Down
2
Gas essential for breathing
4
Blocking of light by a celestial body
8
Amplified beam of light
Form of thermal energy
Push or pull on an object
Disturbance that transfers energy
Biological catalyst
Second lightest element
Gas essential for breathing
Blocking of light by a celestial body
Amplified beam of light