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Waves In Space
Transcript of Waves In Space
The electromagnetic waves with their wavelengths no longer than about 0.001 meters are radio waves. Radio waves carry the least amount of energy and have the lowest frequencies of all electromagnetic waves. Television signals, as well as AM and FM radio signals, are also types of radio waves.
X rays has a higher frequency than ultraviolet rays. X rays have enough energy that they can go through skin and muscle. You can stop x rays by making a shield made up of dense metal(such as lead). If you are exposed to too much x-ray radiation it can hurt or kill cells.
The Electromagnetic Spectrum
There is a long range of electromagnetic waves that have different wavelengths and frequencies. This forms the electromagnetic spectrum. All electromagnetic waves travel in at the same speed. The speed of light. As the electromagnetic waves' frequency increases the wavelength decreases.
Infrared waves have wavelengths between about one thousandth and 0.7 millionths of a meter. Most electromagnetic waves are given off by an object at room temperature. These are infrared waves that have a wavelength of about 0.00001 meters. Infrared detectors detect objects warmer or cooler than their surroundings. An example is forests are covered with vegetation tend to be cooler than its surroundings. The pit between the eyes and nostrils on the pit viper detects the infrared waves of its prey.
Radar stands for Radio Detecting And Ranging. The radar uses electromagnetic waves to identify objects. The radio waves that are given off by radio stations reflect off objects. Electronic equipment from the radar station measures the time it takes the electromagnetic waves to the plane and back.
Ultraviolet Radiation is a higher frequency then visible light and the wavelengths are shorter -between 0.4 millionths of a meter and ten billionths of a meter. Also, carries more energy than visible light,and the energy carried by ultraviolet rays can damage fragile molecules that make up living cells. Too much of the energy carried by ultraviolet rays can kill or damage healthy cells. Too much of the sun's ultraviolet ray's can cause sunburn.
Gamma Rays Video
Gamma rays have the highest frequency and the most energy. Gamma rays are formed by changes in the nuclei of atoms. When protons and neutrons break apart enormous amount of energy is released. Some of the energy is gamma rays. If you are exposed to too much gamma radiation it can hurt or kill cells.
When temperatures increase in an object atoms and molecules move faster than they were moving. Electrons in the object also move faster. Electrons also produce electromagnetic waves of greater frequency and smaller wavelengths. When the temperature is high enough, the object could glow. When that happens, the electromagnetic waves may become visible to the naked eye. That is called visible light. Visible light normally has a wavelength of 0.7 and 0.4 millionths of a meter. What you see of different shades of color are the waves of different wavelengths.
By: BillyBob_Pango, Jalen Reznov, and Alex Shelder