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Electromagnetic Waves Chapter Test Study Guide Name: Answer Key Date: Core: Direction: Answer the following questions. Use this study guide to study for your test. 1. When a room becomes warm when the furnace is turned on. What is this type of heat transfer called? Answer: Convection 2. In an electromagnetic wave, the magnetic field and the electric field are ____perpendicular___________________ to each other and ______perpendicular____________ to the direction the wave is traveling. 3. Which type of Electromagnetic wave carries the most energy? Answer: Gamma Rays 4. What type of waves are in the electromagnetic Spectrum? Answer: Transverse Waves 5. If someone burns their hand by grabbing a hot cup of coffee, what type of thermal energy transfer has taken place? Answer: Conduction 6. What is an optical phenomenon that causes a spectrum of light to appear in the sky? Answer: Rainbow 7. What makes up an Electromagnetic Wave? Answer: Vibrations in a magnetic Field. Vibrations in an electric Field. 8. What are the 3 ways that heat can be transferred? Answer: Conduction, Convection, Radiation 9. Name the Electromagnetic Spectrum waves in increasing order of energy. Answer: Radio Waves, Microwaves, Infrared Waves, Visible Light, Ultraviolet Light, X-Rays, Gamma Rays 10.Why would a worker in an electrical company put on rubber gloves before working on any power lines? Answer: Rubber is a poor conductor of heat and electricity. 11. Why are some coffee cups composed of ceramic material? Answer: Ceramic materials are insulators that limit heat transfer. 12. Can we see all the energy given off by the sun with our eyes? Answer: No 13. Does light, like sound waves, need matter to travel through?(Yes or No) Answer: No 14. The longer the wavelength, the less energy the electromagnetic wave carries. (True or False) 15. How long does it take for light from the sun to reach Earth? Answer: 8 Minutes 16. Do Electromagnetic waves have crests, troughs, & wavelengths? (True or False) Answer: Yes 17. Do all waves need some material to travel through? (Yes or No) Answer: False 18. What is the part of the EM Spectrum that we can see? Answer: Visible Light 19. The shorter the wavelength in the EM Spectrum, the higher the energy. (True or False) Answer: True 20. What are radio waves used for? Answer: TV Broadcasting, Cell Phones, Pagers 21. What are the results of prolonged exposure to Ultraviolet Waves? Answer: Causes Cancers, Causes Skin Damage(Wrinkles), Enables your body to produce Vitamin D. 22. What kind of rays are released by nuclear bombs? Answer: Gamma Rays 23. Light is energy made by ___the sun, and vibrations of electrically charged particles______________. Answer: The sun, and vibrations of electrically charged particles. 24. How does light travel? Answer: In straight lines. 25. What are some materials that are poor conductors of electricity? Answer: Rubber, Plastic. Glass 26. How much of the sun’s UV Rays does the Ozone Layer protect us from? Answer: 95% 27. What is causing the Ozone Layer to become thinner? Answer: Pollution 28. What is the main function of the Ozone layer? Answer: The main function is a shield of protection for us. 29. What is the speed of light? Answer: 186,00 miles per second, 300,000 kilometers per second, and 670,000 million miles per hour 30. Can light be absorbed? (Yes or No) Answer: Yes 31. What materials allow light to be transmitted through them very easily? Answer: Transparent 32. Light is a form of _____energy______________________. Answer: Energy 33. What is the name of the light that fireflies produce? Answer: Bioluminescence 34. What name do you need to remember for the colors in the EM Spectrum? Answer: Roy G BIV----Red, Orange, Yellow, Green, Blue, Indigo, Violet 35. Name the 7 categories of the EM Spectrum in order from the lowest frequency to the highest frequency. Answer: Radio, Microwaves, infrared, visible, UV, X-rays, gamma rays Roman Men Invented Very Unusual X-Ray Guns. 36. What is Conduction? Give some examples. Answer: Energy that is transferred by direct contact. An example is touching a hot frying pan. 37. How are EM Waves light Ocean Waves? How are EM Waves different from Ocean Waves? Answer: EM Waves & Ocean Waves are alike because they both have crests, troughs, and wavelengths. They both move energy from place to place. EM & Ocean Waves are different in that ocean waves move across water. Ocean Waves also need a medium to travel through. EM Waves do not need a medium to move through. They can move across the emptiness of outer space. EM Waves travel through things. 38. Draw the EM Spectrum.