Across
- 4. a measure of the degree to which conductor opposes an electric current through it
- 6. acts as own source of light
- 8. amount of oscillations in one second
- 10. region within a magnetic material which has uniform magnetization
- 13. permits the flow of electrical current
- 14. generation of electrical energy using magnetism
- 19. an incident ray is reflected in a single direction
- 20. a change in the direction of the light ray
- 22. how light travels through a medium
- 24. disturbance of medium is parallel to direction
- 25. disturbance of medium is perpendicular to direction
- 26. restores an object to its equilibrium
- 27. electric force per unit charge
Down
- 1. requires a medium to travel
- 2. measures how stiff a spring is
- 3. direction in which a wave is oscillating
- 5. "back and forth" motion
- 7. must be lit by another source
- 9. flow of electric charge
- 11. results in balanced out waves that pass by one another
- 12. the time it takes to complete one oscillation
- 15. results in a bigger amplitude
- 16. does not conduct electricity well
- 17. an incident ray is reflected at many angles
- 18. change in direction of a wave due to a change in its transmission medium
- 21. produced by electric currents
- 23. change in frequency because of distance