Across
- 1. lets light pass through
- 4. equal and opposite forces
- 6. resistive force from fluids or air
- 10. forces cause acceleration
- 11. push or pull acting on an object
- 12. number of waves passing a point each second
Down
- 2. light bouncing off a surface
- 3. lets some light through
- 5. does not let light through
- 7. bends light
- 8. equal forces causing no change in motion
- 9. force pulling objects towards Earth
- 13. bending of light between materials