Across
1
Path of a planet around the sun
4
Chemical element in table salt
6
Our home planet
7
Particle of light
8
Biological catalyst
Down
2
Glass that splits light into spectrum
3
Unit of force
5
Substance with pH above 7
Path of a planet around the sun
Chemical element in table salt
Our home planet
Particle of light
Biological catalyst
Glass that splits light into spectrum
Unit of force
Substance with pH above 7