properties of light
Light travels in __ lines.
Straight
The angle of incidence equals the angle of __.
Reflection
Refraction happens when light changes __.
Speed
A converging lens is also called a __ lens.
Convex
Glasses help people see by correcting __.
Vision
This property explains why light can bounce off a surface.
Reflection
A flat mirror is called a __ mirror.
Plane mirror
Light bends toward the normal when entering a __ medium
Denser
A diverging lens is also called a __ lens.
Concave
Cameras use lenses to __ light.
Focus
This happens when light bends as it moves into a new material.
Refraction
This type of reflection happens on rough surfaces.
Diffuse reflection
This effect makes a straw look bent in water.
Refraction
Which mirror can form real and virtual images?
Concave mirror
Fiber optics send information using __.
Light
Light travels fastest in this medium.
Vacuum
Images in plane mirrors are upright or inverted?
Upright
The line perpendicular to the surface is called the __.
Normal
Which object uses both lenses and mirrors?
Telescope / Microscope
Name one social benefit of optical technology.
Better communication / Medical imaging
Name one characteristic of light besides speed.
Wavelength / Frequency / Energy
Name a real-life use of reflection.
Mirrors / Periscopes / Road signs
Name a device that uses refraction.
Glasses / Camera lens / Magnifying glass
Lenses work mainly by __ light.
Refracting
Which technology uses mirrors to see objects far away?
Telescope