Write the letter of the matching definition next to each term.
1. Gamma
A. A heavy toxic silvery-white radioactive metallic element
2. Paper
B. Any of several trees producing edible oval fruit having a smooth skin and a single hard stone
3. Beta
C. A material made of cellulose pulp derived mainly from wood or rags or certain grasses
4. Aluminium
D. English chemist and physicist who formulated atomic theory and the law of partial pressures
5. Dose
E. A unit of magnetic field strength equal to one-hundred-thousandth of an oersted
6. Alpha
F. An elementary particle with negative charge (plural)
7. Background
G. Any of various soft thick unsweetened baked dishes
8. Electrons
H. A measured portion of medicine taken at any one time
9. Radon
I. A silvery ductile metallic element found primarily in bauxite
10. Rutherford
J. A soft heavy toxic malleable metallic element
11. Uranium
K. A hypothetical description of a complex entity or process
12. Dalton
L. A radioactive gaseous element formed by the disintegration of radium
13. Radium
M. An intensely radioactive metallic element that occurs in minute amounts in uranium ores
14. Rays
N. Energy that travels in waves or particles
15. Plum
O. German physicist who developed the ___ counter
16. Geiger
P. The 2nd letter of the Greek alphabet
17. Radiation
Q. A unit strength of a radioactive source equal to one million disintegrations per second
18. Pudding
R. Deriving destructive energy from the release of atomic energy
19. Muller
S. Swiss chemist who synthesized DDT and discovered its use as an insecticide
20. Penetration
T. A column of light (plural)
21. Nuclear
U. The 1st letter of the Greek ___
22. Lead
V. A person's social heritage: previous experience or training
23. Model
W. An attack that ___ into enemy territory