Hard Science Crossword
Puzzle #36 • 15×15 grid
6
6
1
6
6
9
6
2
9
10
9
10
8
9
10
7
8
9
10
7
8
10
7
8
10
7
4
10
7
10
7
5
Across
1.Vibration traveling through air
2.Our solar system's star
3.Basic unit of life
4.Element in all life
5.Negatively charged particle
Down
6.H2O liquid
7.Preserved ancient remains
8.Luminous celestial object
9.Push or pull on an object
10.Group of bonded atoms