Act+6+Spectrum

Think About It- What does a prism reveal about visible light? When a prism is revealed in light the lights tends to bend and colors come about. The prism also seperates the light into 7 colors which are mainly the colors you see in the rainbow. (B) other than the sun providing you light energy to see the sun gives out radiation on the earth, maybe good radiation or harmful radiation, gives us a source of vitamin D but can also cause cancer. BY: KATHRINE JACQUES

__Geo Words:__ By: Lily Hughes
 * Spectroscopy – the science that studies the way light interacts with matter.
 * Spectroscope - an instrument consisting of a slit and grating which produces a spectrum for visual observation.
 * Visible Spectrum – part of the electromagnetic spectrum that is detectable by human eyes.
 * Electromagnetic Radiation – the energy propagated through space by oscillating electric and magnetic fields.

__CHECK YOUR UNDERSTANDING Pg. E67 __ 1) The colors of the visible light spectrum from longest wavelength to shortest are; Red, Orange, Yellow, Cyan, Green, Blue, and Violet. There are no breaks between these colors because it is a continuous cycle. 2) Gamma rays can be more harmful than others because it has the highest temperature or Kelvin. 3) Astronomers use a spectroscope to detect different wavelengths of light. 4) The speed of a distant object in space can be measured by its peak wavelength. BY: Godwin Djokoto

More Geo Words Ultraviolet- electromagnetic radiation at wavelengths shorter than the violet end of visible light Infrared- electromagnetic radiation with wavelengths between about 0.7 to 1000nm, not visible to human eye Radio telescope- an instrument used to observe longer wavelengths of radiation, with large dishes to collect and concentrate the radiation onto antennae -Luke Bickerstaff

** Geo words **
 * Peak wavelength: ** the wavelength of the electromagnetic radiation with the most electromagnetic energy emitted by any object.
 * Emission spectrum: ** a spectrum containing bright lines or a set of discrete wavelengths produced by an element. Each element has its own unique emission spectrum.
 * Absorption spectrum: ** a continuous spectrum interrupted by absorption lines or a continuous spectrum having a number of discrete wavelengths missing or reduced in intensity. **– Kory Sanders**

Digging Deeper- Electromagnetic Radiation
====Isaac Newton was the first to find that he could split light into a spectrum of many different colors. As he passed a beam of sunlight through a glass prism, a spectrum of colors appeared. The colors were from red- violet. Newton discovered that visible light was in fact a mixture of different kinds of light. Spectroscopy is the science of studying the properties of light. Which is exactly what Newton and Huygens did. Spectroscopy has answered many questions about matter, energy, time, and space.==== Spectroscopy studies the way light interacts with matter. Isaac Newton is the one who discovered this. May years of research about this answered many questions about matter, energy, time, and space.Infared is electromagnetic radition. It's waves aren't visible to the human eye. Its detected as heat. And ultraviolet radiation is what you feel and what gives you sunburns.
 * By: Taylor Smith**
 * Digging Deeper- Spectroscopy, Infared, and Ultraviolet **
 * -Kaitlyn Peters**

Investigate 1-4- 1A.) Red, orange, yellow, green, blue, purple. b.) It got brighter and dimmer. 2A.) Red, orange yellow, green, blue, purple. 3A.) Red, orange, yellow, green, blue, purple. 4A.) I did not see any observations. B.) I think they would differ based on the type of star it is. Gabby Garibaldi

__Digging Deeper Pg 65 Notes__ The orbiting Chandra X-ray telescope rountinely detects the highly energetinc radiation streaming from objects like supernova explosions, active galaxies, and black holes. A wide array of solar telescopes both on earth and in space study every wavelength of radiation from our nearest star in minute detail. The tools of astronomy expand scientists' vision into realms that human eyes could never see. **By:Thomas Crutchfield**

__** Understanding & Applying: #1 **__ The two parts of the electromagnetic spectrum i would use to to investigate the Earth would be __Visible Light__ and __Radio Waves__. I would use visible light, even though it might be difficult to see clearly, to detect activity on the earth. We give off a lot of radio waves and it would be a very useful way to investigate the Earth from a distant planet.
 * By Chelsea Blanton**


 * Rainbows appear when raindrops (similar to a prism) reflect sunlight, thus breaking white sunlight into colors. **
 * As light enters a water droplet, the different wavelength colors bend at slightly separate angles. Some of this light reflects off the back of the droplet and is bent a second time as the droplet emerges from the light beam. Drops at different angles send distinctively different colors to the eye. **
 * If light is hitting raindrops at just the right angle, a secondary, larger rainbow will appear outside of the main rainbow. The second rainbow is a fainter color than the main one because the light has been reflected twice by each raindrop. Having a double reflection also reverses the colors in the second rainbow. **
 * - Jade Miller **

Peak wavelength are wavelenths of light with the most energy produced by an object. The wavelength of electromagnetic radiation with the most electromagnetic energy emitted by any object. -By: Brittany Stocker
 * PEAK WAVELENGTH **

humans and wavelenghts humans only see wavelenghts between .4 and .7 um. that is where the visible light spectrum falls. Because we can only see between those numbers means that much of the radiation given of by the sun is invisible to the human eye. but we are still familier with other forms of radiation such as ultraviolet radiation which gives us sunburns. and infared which we use to ditect heat. Lea Kincaid

Activity #6 __Digging Deeper Notes/Geowords:__ Different Spectrums: There are two different types of spectrums: Emission spectrum and absorption spectrum.
 * Emission Spectrum is a spectrum containing bright lines or a set of discrete wavelengths produced by an element.
 * Absorption Spectrum is a continuous spectrum interrupted by absorption lines or a continuous spectrum has a number of discrete wavelengths missing or reduced in intensity.

-Morgan Mueller

-Hannah Albritton
If you see bright lines in the stellar spectrum that match the patterns of bright lines in the helium or calcium spectra, then you have identified those elements in the star. This kind of spectrum is known as an emission spectrum. If you look at a star and see dark lines where you would expect to see an element- especially hydrogen- it is likely that something between you and the star is absorbing the element. This kind of spectrum is known as an absorption spectrum. The positions of lines in a spectrum reveal the motion of the star toward or away from the Earth, as well as the speed of that motion.

The galaxy M81 is a spiral galaxy about 11 million light-year across. The spiral structure in a pseudo color image, the red in the image represents the strong radio emission and blue, which indicates a weaker emission. The spiral shaped galaxy looks very similar to our own galaxy, the Milky Way. -Tommy Rutt
 * Galaxy M81**

**__Electromagnetic Radiation__**
Electromagnetic radiation is in the form of electromagnetic waves that transfer energy as they travel through space. Electromagnetic waves travel at the speed of light (300,000m/s). Thats eight laps around the Earth in one second. Although its not easy to appreciate from everyday life, it turns out that electromagnetic radiation has properties of both particles and waves. The colors of the visible spectrum are best described as waves, but the same energy that produces an electric current in a solar cell is best described as a particle. -Gage Chumney