Across
- 1. - a type of radiation that cant go through led (5 letters)
- 4. - a wave that moves particles perpendicular(10 letters)
- 7. - the energy of motion (7 letters)
- 10. - the same element with a different number of newtrons (7 letters)
- 11. - adds energy to something (4 letters)
Down
- 1. - it keeps us on the floor (7 letters)
- 2. - measured in amps (7 letters)
- 3. - the time it takes for half th radioactive material to decay (8 letters)
- 5. - speed with direction (8 letters)
- 6. - contains nuetrons and electrons (4 letters)
- 8. - the unit used to measure force (6 letters)
- 9. - an atome with charge (3 letters)