The Electromagnetic Spectrum (EMS): Waves of energy
Radio waves about
. This is larger than any other wavelengths on the EM spectrum (therefore shortest frequency and last on scale) The frequency of a radio wave ranges from 30 KHz to 3GHz. The Least amount of energy on the EM spectrum is found in radio waves. Some of the fastest radio waves were moving faster than the speed of light. Radio Waves can be found in radios and they are also found in space. Radios work due to radio waves. When radio waves are transmitted to a radio it vibrates against speakers making the sound waves that we can hear. Stars and other things in space transmit radio waves. Because of radio waves we can find out more about outer space. Radio waves have discovered pulsars, plasma clouds, and quasars. A group of giant antenna and radio dishes stretch along the US (from Hawaii to the U.S. virgin islands) to measure radio waves. These satellites create one giant radio wave finder, that is used to locate and measure radio waves.
electromagnetic spectrum
All of the frequencies or wavelengths of electromagnetic radiation
Co pare and contrast electromagnetic waves with other kinds of waves
Electromagnetic waves don't require a medium or vacuum to travel through, while mechanical waves require a medium to travel through. Electromagnetic waves are fastest in a vacuum while mechanical waves are fastest in a solid medium. Both waves can travel through a medium and both waves transfer energy
More frequency
Equals greater number of wavelengths per second thus the image
Energy of wave
Frequency mostly + amplitude Wave with highest one, has the highest energy
Explain the importance of gamma rays and treating cancer, even though many patients suffer serious side effects to such treatment
Gamma radiation is used to destroy cancer grow by killing living cells, but also has some serious side effects Can help get rid of cancer/stop it Kemo therapy Kills cancer cells
Infrared radiation is like
Heat for example
About gamma rays
Highest on ems They have the smallest wavelength, most energy, and greatest frequency of any wave in the electromagnetic spectrum. Their wavelengths are about the size of an atom's nucleus. They are the shortest waves in the EMS, and they are next to x-rays. Since gamma rays have enough energy to kill living cells, doctors are able to selectively use gamma radiation to destroy cancer growths. Scientists can use gamma rays to determine the elements on other planets. Gamma rays can be used for industrial applications such as security at the airport. Gamma rays can detect metal in your bags or on you. Gamma rays can also help preserve food. Gamma rays can kill an average person, cause so strong (energy wise) If we could see gamma rays, the night sky would look different because of the burst and high radiation Gamma-ray bursts are the most energetic and luminous electromagnetic events since the Big Bang and can release more energy in 10 seconds than our Sun will emit in its entire 10-billion-year lifetime. On Earth, gamma rays are generated by nuclear explosions, lighting, and the less dramatic activity of radioactive decay.
We can't see
Infared and UV on the ems
What type of electromagnetic radiation does a flame emit?
Infrared waves
EMS
Is made up of seven types of EM radiation
If a cell phone uses microwaves to transmit information, is this type away dangerous to humans? Use what you know about the spectrum to support your answer
No, because microwaves have a pretty low frequency on the EMS, so they don't carry that much energy and thus isn't dangerous to humans. Visible light isn't dangerous to humans, we see every day, and it has a higher frequency than microwaves
Describe what we can do to prevent exposure to ultraviolet radiation if the O-Zone layer continues to deteriorate.
One way to prevent damage is to stay indoors or if you were outside put on sunscreen. Stay away from the sun, which emits UV lights (which causes like sunburns)
Order of ems
Radio waves, Microwaves, Infrared, Visible, Ultraviolet, X-Ray, Gamma Rays.
Explain why visible light is arranged into colors in the following order: red, orange, yellow, green, blue, indigo, and violet
Starting from red all the way to Violet is the order of the colors from longest wavelength to shortest wavelength of visible light
Infrared about
The Infrared wave is a type of electromagnetic radiation. The wavelength of the Infrared wave ranges from 760 to one million nanometers (NM) and a frequency of 10^14 to 10^15 Hz per second. These wavelengths help scientist study the thermal energy radiation released from our planet. I can also pass through regions of gas and dust. Infrared is found everywhere through everyday life for example heat as in fire is a form of Infrared radiation. As well as tv remotes use infrared radiation to change channels. Also, Infrared heat lamps are used to keep food warm or to keep animals eggs from staying warm so they can hatch easier. Fun Fact: They can travel through thick smoke, and can be used as heat vision.It also can't be seen by humans, it can detect the heat of waves. Also night vision devices use infrared waves to see animals and people at night or in the dark. Night vision Like fire, heat
Thermal graphs or infrared photographs show emission of infrared radiation emitted from objects. If you lived in a cold climate, how could a thermograph taken of your home be helpful to you as a homeowner?
The thermograph would help you as a homeowner by showing the hotter and warmer parts of your house, showingshowing you where the heat is escaping and where you need to insulate.
X-ray about
The wavelength of X-Rays range from 0.03 to 3 nanometers, which is very short. Because x-rays have shorter wavelengths, they have higher frequencies and a very high amount of energy in each wave. X-rays can give surgeons extremely detailed images of which bones are in need of care. X-Rays can also tell dentists which teeth they need to drill for their patients. X-rays don't reflect head on due to their high levels of energy. X-rays can be as small as a single atom in an element. The Mars Exploration Rover used x-rays to detect zinc and nickel in martian rocks. X-rays can come from objects millions of degrees celcius. X-Rays can knock electrons out of atoms, which can damage cells in living things
Microwaves about
The wavelength ranges from 30 cm to 1mm. The frequency ranges from 300 MHz to 300 GHz. The energy of the wave is low. Microwaves are found in microwave ovens, doppler radars, Quick Scatterometers, and radar altimeter. Microwave ovens work by forcing water and fat molecules to turn, thus heating the food. Doppler radars use microwaves to go through clouds and other layers of the earth to detect weather patterns such as hurricanes and storms coming in. Quick scatterometer measures energy changes of microwave pulses and can dictate the pace and route of winds close to the ocean surface We use microwaves to cook our food every day. Microwaves carry thousands of phone channels to your phone quickly. Microwaves can pass through the atmosphere. Microwave range of wavelengths are grouped into sub-bands. L band microwaves are used in GPS and can be used for forest mapping. Not dangerous to humans, not that strong
UV about
Ultraviolet light has shorter wavelengths than visible light thus higher frequency and are not visible to the human eye. Ultraviolet is categorized into three sections UV-A, UV-B, and UV-C. It also has a higher frequency, and more energy than visible light. It is also naturally created by astronomical objects. UV Light is found just after violet light and visible light. It comes before X-Ray light. It is produced by the sun, and it's frequency is just above that of visible light, placing it where it is on the scale. UV Light is used to map galaxys, stars, and astronomical objects. NASA's GALEX spacecraft has taken UV photos of galaxy M81. In addition, UV light can be measured to determine the quality of the ozone layer. If the layer is failing, more UV light comes from the sun and hits the surface of earth. This can be detected by sensors on the surface. Bees can see UV light. Ultraviolet light also causes aurorae. These are created by high-energy waves reacting with atmospheric gases causing them to glow in many different colors. Scientists can also use ultraviolet radiation to find the age of stars since younger stars shine brighter than older stars. In addition, UV light can be harmful to cells as they can damage DNA. Its what you put sunscreen on for The sun emits Uv waves
Visible light about
Wavelength: When the wavelength is in between 380 to 700 nanometers is visible light. The shortest wavelength is violet, which is 380, and the longest wavelength is Red, which is 700 nanometers. The frequency of visible light is 10^15. The most energy starts at the end of the rainbow at the blues and purples, and the energy decreases as you go down the rainbow. DVD players use lasers to scan the data off of the DVDs, and we use electricity to generate visible light in light bulbs. Visible Light is also used in Laser Altimetry, which uses active remote sensing to calculate things such as the elevation of polar ice sheets, the heights and characteristics of clouds, amount of aerosols from dust storms/forest fires, and the structure of forest canopies. Because of the light bending after rain, visible light is commonly seen in the forms of colorful rainbow. The colors are in order from red to violet because each color has a different frequency, red having the lowest and violet having the highest. This is also the reason for things changing color when they get warmer or cooler (for example the sun's or a hot piece of metal). Visible light is like the light we see, the light from lightbulbs
If radio waves are not compressional waves, like sounds waves, explain what their role is enabling us to hear music on our favorite radio station?
When radio waves are transmitted to a radio and it vibrates against the speakers, it makes sound waves that we can hear Electronics in the radio receive the radio waves, which produce sound waves which create a longitudinal wave