I.M.S. SCIENCE Name: __________________________
Pre-Assessment Radiation: Period: ______ Date:`___________ SCORE:____ / 18
A. nucleus G. compound M. shielding
B. proton H. formula N. millirem
C. Neutron I. radioactivity O. containment
D. electron J. alpha P. low-level radioactive waste
E. atomic number K. beta Q. high-level radioactive waste
F. mass number L. gamma R. half-life
the number of protons in the nucleus of an atom 1. _____
a substance made up of two or more elements 2. _____
the release of energy from the nucleus of an atom 3. _____
the central part of the atom; it has a positive charge 4. _____
the number of protons plus number of neutrons in an atom 5. _____
type of radiation made up of positively charged particles 6. _____
unit of measurement in radiation 7. _____
positively charged particle in the nucleus of an atom 8. _____
type of radiation made up of negatively charged particles 9. _____
a negatively charged particle near the nucleus of an atom 10. _____
a particle with no charge in the nucleus of an atom 11. _____
wave of energy: type of radiation 12. _____
used to indicate quantities and specific elements which
make up a compound 13. _____
an example is used fuel rods from commercial nuclear
power plant reactors 14. _____
by-product of processes that use radioactive materials;
most have a relatively short half-life 15. _____
barriers to radiation 16. _____
restriction of radioactive materials from entering
the environment 17. _____
time it takes for a material to lose half of its radioactivity 18. _____