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29 Cards in this Set
- Front
- Back
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What is a wave?
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any disturbance that transmit energy through matter or space
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What does a wave do?
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carries energy away from the source
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What does a wave cause?
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wave energy causes the matter to move but the matter does not go anywhere.
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What is the top part of a wave?
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crest
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What is the bottom of a wave?
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trough
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What is the distance between a point on a wave and the same point on the next wave
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wavelength
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What is the number of waves in a certain amount of time
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frequency
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What tells us how much energy is in the wave
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wavelength and frequency
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What are the two types of waves?
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mechanical waves
electromagnetic waves |
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What are mechanical waves
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a wave that travels through matter such as solid, liquid , or gas
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What are some examples for mechanical waves?
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earthquakes, ocean waves, sound waves
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What electromagnetic waves?
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a wave that travels through matter or empty space that doesn't require metter
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What are some examples for electromagnetic waves?
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visible light, radio waves, UV rays
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What is the electromagnetic spectrum?
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the entire range of electromagnetic waves
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There are no clear divisions between what?
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wave types
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Where is electromagnetic spectrum released?
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The sun, but much is filtered out by Earth's atmosphere
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What is the order of waves?
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radiowaves → microwaves →infarred waves →visible light → ultra violet waves → X- rays → gamma rays
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What are radiowaves?
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•sends signal for TV, radios, cell phones, GPS, etc.
•lowest energy waves, lowest frequency, longest wavelength |
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What are microwaves?
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•used to heat up food
•low energy waves, low frequency, long wavelength |
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What are infarred waves?
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•felt as heat by humans, can be seem by snakes
•lower energy waves, lower frequency, longer wavelength |
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What is visible light?
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•only part of the electromagnetic spectrum that humans can see
•made up of colors •medium energy waves, medium frequency, medium wavelength |
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What are the colors of visible light?
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ROY G BIV
Red → Orange →Yellow → Green → Blue → Indigo → Violet |
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What energy does red have?
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lowest energy
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What energy does violet have?
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highest energy
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What are ultraviolet waves?
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•can be seen by bees
• higher energy waves, higher frequency, shorter wavelength |
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How is ultraviolet waves helpful?
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kills bacteria, helps humans produce vitamins to absorb calcium
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How is ultraviolet waves harmful?
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sunburn, cancer, eye damage
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What are X-rays?
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takes images of tissues and bones
• high energy waves, high frequency, short wavelength |
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What are Gamma rays?
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released from nuclear reactions
• highest energy waves, highest frequency, shortest wavelength |
