Light Waves Science Quarter 1.

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Light Waves Science Quarter 1.

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Presentation transcript:

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 absorb / absorption

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

Reflection Reflection happens when light waves bounce off a surface

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

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.