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25 Cards in this Set
- Front
- Back
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A range of light waves with different wavelengths and energies is called a
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spectrum
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Light bends as it passes from one transparent material to another This bending is called
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refraction
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Light waves bounce off the surface of materials. This bouncing off is called
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reflection
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The distance from the top of one wave to the top of the next wave is called
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wavelength
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Light is a form of
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energy
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White light is made up of
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7 colors
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An object that separates white light into all the colors is a
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prism
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An example of a prism is a
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raindrop
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The visible spectrum is a small part of the
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electromagnetic spectrum
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As the energy of a wave becomes larger, the wavelength
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becomes smaller
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Microwaves have more energy and shorter wavelengths than
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radio waves
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Light travels in straight lines called
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rays
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The Law of Reflection states that the
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incoming angle is equal to the outgoing angle
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Refraction takes place because light travels
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at different speeds in different materials
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Objects that refract light are
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lenses
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Two kinds of lenses are
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convex and concave
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The convex lens curves outward and brings light rays together. This causes objects to
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look bigger
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An object that uses convex lenses is a
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telescope
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Lenses that curve inward and spreads light rays apart are
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concave
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The tissue that covers the back of your eye is the
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retina
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The color of an object depends on the color of the visible spectrum that it
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reflects
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Materials that block light are described as
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opaque
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Black objects absorb all the wavelenghts of the visible spectrum. When black objects are outside in the sun they get
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warmer
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Light is used in some new technologies. One example is using tubes of gas that are so strong they can cut through metal. These tubes of gas are called
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lasers
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Messages are sent over the internet through tubes of glass that keep light energy inside. These tubes are called
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optical fibers
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