Electromagnetic Radiation 11Es

crest trough amplitude wavelength origin amplitude Electromagnetic Spectrum Matching Click and drag to the best description. high frequency short wavelength speed of light 3 x 10^8 m color with longest wavelength Red Color with highest frequency Violet Wave used to cook food. Microwave crest top of wave trough bottom of wave 1. Light waves are electromagneticwaves with certain properties.a. The wavelengthis the distance from one point on a wave to the corresponding point on the next wave.b. Frequencyis the number of waves that pass a specific point in a certain period of time.c. As the frequency of a wave decreases, wavelength increases.d. All electromagnetic waves travel through space at a speed of 300,000, 000 km which is the speed of light.e. The speed of a wave is its frequency multipliedby its wavelength.f. When electromagnetic waves move through matter, their speed decreases. Sources of Electromagnetic Waves1. Earth’s most important source of energy is the Sun, which gives off energy in the form of electromagnetic waves.a. The only electromagnetic waves humans can see are lightwaves.b. Infrared waves have wavelengths that are longerthan those of light.c. Ultraviolet waves have wavelengths that are shorterthan those of light. 4. The Moon, stars, and planets also emit radiation, most of which is not visible, but can be detected by telescopes.5. On Earth, campfires, lightbulbs, and stove burners are hot enough to produce electromagnetic waves that carry energyyou can feel.a. Everything you see produces electromagnetic waves.b. Special camerasproduce visible images of invisible waves on Earth. The Energy of Electromagnetic Waves1. The energy of electromagnetic waves is related to their frequency.2. Waves that have lower frequency, such as light waves, have lower energy.3. The energy of mechanicalwaves is related to their amplitude.4. The energy of electromagneticwaves is related to frequency, not amplitude.