P-7+Light

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 * ====Standard P-7:==== || ====The student will demonstrate an understanding of the properties and behaviors of light and optics.==== ||
 * Indicators:**
 * || P-7.1 || [|Explain the particulate nature of light as evidenced in the photoelectric effect.] ||
 * || P-7.2 || [|Use the inverse square law to determine the change in intensity of light with distance.]
 * || P-7.2 || [|Use the inverse square law to determine the change in intensity of light with distance.]

6. When you are in a dark room with only one light on, you may notice that it is easier to see what you're doing when you are closer to the light rather than further away. That is because as you move further away from the light source, it intensity also weakens. This is due to the fact that as the light propogates out, the same amount of light must fill a larger area, forcing its brightness to weaken exponentially. 7. || 4. 5. Links [|http://en.wikipedia.org/wiki/Polarization_(waves)] [] [] 6. Light travels in waves naturally. Polarized lenses take advantage of that by having only open paths along one direction. So when light passes through the lenses, it can only pass if it oscillating in the right direction, limiting but not entirly stopping it. 7. || 4. 5.Links [] [] 6. When you look at an object such as a leaf, you see green light. This is because when white light strikes the leaf, only green light is reflected and all the other colors are absorbed. This is color by reflection. Color by transmission would be like the red, green, and blue pixels in a television screen combining their lights to make millions and millions of colors, including whie. 7. || 4. 5. Links [] [] [] 6. In an object called a diffraction grating, light can be transmitted or reflected by dispersing light in a way similar to the way you see the colors of the rainbow on a CD. And in soap bubbles, waves of light interfere with each other in order to form bands of color. 7. || 4. 5.Links [] [] [] 6. The eye works by receiving light through the lens. As the light passes through, the image gets smaller and is flipped upside-down before it retina. The brian then takes the image and enlargens it and reflipping it. Farsightedness is when the light bends at too small an angle to meet at the retina. Nearsightedness is when the light bends at too much off an angle and meets before it reaches the retina. Both can be corrected by a converging lens and a diverging lens, respectively. 7. ||
 * || P-7.3 || [|Illustrate the polarization of light.]
 * || P-7.4 || [|Summarize the operation of fiber optics in terms of total internal reflection.] ||
 * || P-7.5 || [|Summarize image formation in microscopes and telescopes (including reflecting and refracting).] ||
 * || P-7.6 || [|Summarize the production of continuous, emission, or absorption spectra.] ||
 * || P-7.7 || [|Compare color by transmission to color by reflection.]
 * || P-7.8 || [|Compare color mixing in pigments to color mixing in light.] ||
 * || P-7.9 || [|Illustrate the diffraction and interference of light.]
 * || P-7.10 || [|Identify the parts of the eye and explain their function in image formation.]
 * |||| [|All indicators in Standard P-7, in a combined document] ||
 * |||| [|All indicators in Standard P-7, in a combined document] ||