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Light Waves

Light Waves. Science Quarter 1. Essential Questions. How does light travel? How does light react to different objects and substances?. Key Vocabulary. light waves electromagnetic spectrum angle of reflection angle of incidence reflect / reflection refract / refraction

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Light Waves

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  1. Light Waves Science Quarter 1

  2. Essential Questions • How does light travel? • How does light react to different objects and substances?

  3. Key Vocabulary • light waves • electromagnetic spectrum • angle of reflection • angle of incidence • reflect / reflection • refract / refraction • absorb / absorption

  4. Light Waves Assignment You will work in a group to: • Perform experiments to demonstrate how light waves react upon hitting different objects/substances • Create an informational Powerpoint about light waves

  5. Movement of Light Waves • Light travels in the form of electromagnetic waves • Light spreads out in all directions from its source • Light travels in straight lines called rays • Light travels at the “speed of light” 186,282 miles per second 299,792 kilometers per second

  6. Reflection • Reflection happens when light waves bounce off a surface

  7. Refraction • Refraction happens when light changes speeds and/or is bent (traveling from air to water)

  8. Absorption • Absorption of light happens when atoms in an object absorb (take in and hold) the light waves. For example: You are able to see a red apple because all of the other light waves are absorbed but red is reflected to your eyes.

  9. Experiments with Light Use the following website to conduct experiments on reflection, refraction and absorption General Electric Website: • http://www.gelighting.com/na/home_lighting/gela/students/science_what_is_light.htm

  10. Light Wave Rubric

  11. Resources • General Electric Website (images, experiments and content reading) • Sciensaurus

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