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G5 Ch6 L3.1 Light: Definition and Shadows
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What is a wavelength?
The distance between one peak and the next in a wave.
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What are transverse waves?
Light waves that vibrate in the direction perpendicular to the direction of their motion.
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How does scattering light occur?
When light strikes an object’s surface, photons can bounce off at random angles.
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What is the difference between opaque, translucent, and transparent objects?
Opaque=no light; translucent= some light, transparent= all light passes through.
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What makes a white shirt cooler on a warm day than a black shirt?
White reflects light, black absorbs it. Sunlight is warm.
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What do scientists think about the speed of light?
It's constant and the maximum speed in the universe.
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What are shadows?
The dark area of blocked light behind opaque and translucent objects.
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What is a light particle called?
A photon.
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How do you determine the speed of a wave?
Multiply the wavelength of a wave by its frequency.
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What properties of a particle does light have? Name one.
Travels in straight lines, has momentum, can change the direction of moving particles.
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