Light Waves Vocab and Word Wall

2. one that does not allow light to pass through it
6. a dark region formed when light is blocked by an opaque object, creating an absence of light on the opposite side of the object
8. a spherical mirror where the reflecting surface is on the inward, curved side
13. a lens that's thicker in the middle than at its edges, causing parallel light rays to converge to a focal point
14. allows light to pass through it, but scatters the light in all directions, making it difficult to see clearly through it
15. the fundamental particle of light and electromagnetic radiation
17. the change in direction of a wave passing from one medium to another caused by its change in speed
19. the spreading of waves around obstacles
20. abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums

1. describes the path of light, often represented as a straight line with an arrow indicating the direction of energy flow
3. the direction of oscillation of a wave, specifically for transverse waves like light
4. the mirror-like reflection of waves, such as light, from a surface
5. a type of spherical mirror where the reflecting surface curves outwards, like the outside surface of a sphere
7. differ from mechanical waves in that they do not require a medium to propagate
9. the full range of electromagnetic radiation, organized by frequency or wavelength.
10. the phenomenon where the propagation velocity of a wave depends on its frequency or wavelength
11. a type of lens that causes parallel light rays to spread out (diverge) after passing through it
12. the reflection of light or other waves or particles from a surface such that a ray incident on the surface is scattered at many angles
16. allows light to pass through it without significant scattering, allowing you to see clearly through it
18. the point where parallel light rays converge after passing through the lens or reflecting off the mirror