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Electromagnetic waves and Speed of Light
The document discusses electromagnetic waves and the electromagnetic spectrum. It explains that electromagnetic waves are energy carrying waves composed of oscillating electric and magnetic fields that propagate at the speed of light in a vacuum. The electromagnetic spectrum classifies electromagnetic waves by frequency and wavelength, from highest frequency/shortest wavelength to lowest frequency/longest wavelength: gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, and radio waves. All electromagnetic waves travel at the speed of light in a vacuum, which is approximately 300,000,000 meters per second.
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Electromagnetic waves and Speed of Light
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- 2. Electromagnetic Spectrum •The classification of electromagnetic wavesaccording to frequency.
- 4. Electromagnetic Waves • Energy carryingwaves emitted by vibrating charges often electrons that is composed of oscillating electric and magnetic fields that generate one another.
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- 7. Electromagnetic Waves •All EM wavesmove at the same speed in a vacuum and differ from one another in frequency and wavelenght.
- 8. Electromagnetic Waves •longer wavelength=low frequency=low energy •Shortwavelenght=high frequency=high energy
- 9. Electromagnetic Waves • Gamma rays •X-ray • Ultraviolet • Visible light (ROYGBV) • Infrared • Microwave • Radiowave
- 10. Electromagnetic Waves •The speed ofall the waves in the EM spectrum is equivalent to the speed of light 299 792 453 m/s.
- 15. Electromagnetic Waves •You know more aboutthe electromagnetic spectrum than you may think.
- 17. Radio wave • Yourradio captures radio waves emitted by radio stations, bringing your favorite tunes. Radio waves are also emitted by stars and gases in space.
- 20. Microwave • Microwave radiationwill cook your popcorn in just a few minutes, but is also used by astronomers to learn about the structure of nearby galaxies.
- 22. Infrared • Night visiongoggles pick up the infrared light emitted by our skin and objects with heat. In space, infrared light helps us map the dust between stars.
- 24. Visible Light •Our eyesdetect visible light. Fireflies, light bulbs, and stars all emit visible light.
- 27. Ultraviolet • Ultraviolet radiationis emitted by the Sun and are the reason skin tans and burns. "Hot" objects in space emit UV radiation as well.
- 31. X-ray • A dentistuses X-rays to image your teeth, and airport security uses them to see through your bag. Hot gases in the Universe also emit X-rays.
- 33. Gamma ray •Doctors usegamma- ray imaging to see inside your body. The biggest gamma-ray generator of all is the Universe
- 34. CREATE A CONCEPT MAP •Createa concept map about EM waves and speed of light.
- 35. 3-2-1 EXIT CARD 3-Whathave you learned today? Explain. 2-What life lessons have you gained from the topic? 1-What MI Activity did you learn the most from?