Across
- 2. / gravity,friction,air resistance are all types of what
- 3. /a sound which bounce off back to the person
- 5. /the force between two surfaces
- 6. /in class your always have to do your
- 7. / compression of air cause an increase in what
- 8. / what is it called if something can absorb heat or electricity
- 9. / the energy an object has due to its motion.
Down
- 1. /a car speeding up at a constant rate
- 4. / the transfer of heat by circulating it through air or liquids