Across
1
Disturbance that transfers energy
3
Basic unit of life
4
Unit of force
5
Icy body with a tail near the sun
6
Chemical element in table salt
9
Smallest unit of an element
Down
1
Unit of power
2
Unit of heredity
4
Center of an atom or cell
7
Magnetic metallic element
8
Molten rock beneath Earth surface
10
Measure of matter in an object
11
Hottest planet in solar system