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Light & Lenses

smslightandlenses

QuestionAnswer
Reflection The bouncing of light or wave from a surface.
Refraction The bending of light or waves as it passes from one material to another.
Electromagnetic Radiation Energy that travels through space in the form of light and other types of energy.
How does light travel? Straight line in waves.
Spectrum Range of electromagnetic radiation that travels in waves with many frequencies and wavelengths. Visible light makes up only a small part of it.
What must happen for you to see an object? The object must give off (reflect) wavelengths of visible light, and the light must enter your eye.
Prism A transparent object that separates (refracts) white light into different wavelengths which causes different colors to separate from each other.
Absorbed Light (Absorption) Light is taken in by an object. The light energy is then transformed into thermal energy.
Transparent A material that allows light energy to pass through.
Farsighted A person can focus well on objects at a distance, but close-up objects are blurred. Convex lens bend light rays inward, so they focus on the retina instead of behind it.
Nearsighted A person can focus well on objects close-up but distant objects are blurred. Concave lenses bend light rays outward before they reach the eye so the rays focus on the retina instead of in front of it.
Convex Lens A lens that is thickest in the middle and bends light rays toward one another to make objects look larger.
Concave Lens A lens that is thinner in the middle than around the edges. It bends light rays to spread out and makes an object look smaller.
Which type of lens allows light to enter the human eye? Convex
Opaque A material that does not allow light to pass through.
Created by: amstipolly
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