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Java Games: Flashcards, matching, concentration, and word search. |
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Crave the Wave
electromagnetic spectrum
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| electromagnetic spectrum | radio waves, microwaves, infared, visible light, ultraviolet, x-rays, gamma rays |
| radio waves | Radio waves have the longest wavelength. they can miles long or only a foot long. radio waves are used in radios, tvs, and cell phones. radio waves can be seen when emitted from objects in space. |
| microwaves | microwaves have wavelengths about 1 foot long. they are used in microwaves to warm up food and for radar, phones, and computer data (transmitions on the last 2) |
| Infared | there are 'far infared' that are thermal and 'near infared' which are not thermal. they are used by tv remotes . Infared images give info not captured by visible light. Snakes in the pit viper family have 'sensory pits' that are used to image infared light. |
| Visible light | Only electromagnetic wave that is visible. colors of the rainbow. red has the longest wavelength and violet has the shortest wavelength. when all waves come together they make white light. the biggest to smallest wavelength: red, orange, yellow, green, blue, indego, violet. or roygbiv. |
| ultraviolet | UV light has shorter wavelengths than visible light. Humans can not see UV light, but bees can. ultraviolet rays are emmited by the sun and can cause serious damage to your skin and eyes. |
| gamma rays | gamma rays are forms of electromagnetic radiation. electromagnetic radiation is made sub-atomic partical interaction, or radioactive decay. gamma rays have the shortest wavelength and the highest frequency and energy in the electromagnetic spectrum. they cause serious damage to living cells when absorbed because they mess up your dna. gamma rays can also be used in medicine. since they can kill living cells, they can be used in cancer treatment. gamma rays are the most energetic form of light, and are also produced by the warmest areas of the universe. they can be made by supernovas, neutron stars, pulsars, and black holes. gamma rays cant be reflected by mirrors. if you could see gamma rays, the moon would look brighter than the sun. Gamma ray burst can release more energy in ten seconds than the sun can in its entire lifetime. (ten million ) years. all of the gamma ray bursts observed so far have been outside the milky way. |
| X-rays | xrayslight acts more like particles than a wave. in 1895, xrays |
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Middle school science information |
PRA Science |
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