Across
1
Disturbance that transfers energy
3
Unit of power
5
Substance with pH above 7
6
The Red Planet
8
Unit of heredity
10
Center of an atom or cell
Down
2
Force that attracts objects together
4
Biological catalyst
7
Molten rock beneath Earth surface
9
Naturally occurring inorganic solid
11
Blocking of light by a celestial body