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- 1. If microwaves have a longer wavelength than ultraviolet waves, which type of wave has less energy? A. ultraviolet B. microwaves C. Both types of waves have the same energy. D. Wavelength cannot be used to determine energy. Gamma rays are the highest energy waves in the electromagnetic spectrum. Using the diagram which region would BEST represent gamma rays? A 2. A. Region A B. Region B C. Region C D. Region DWhich of these EM waves has the highest frequency? a. Gamma Rays O b. Microwaves O c. Ultraviolet O d. X-rays1. Describe the magnetic fields of currents, the effect of magnetic fields on moving charges, induction and their uses in electric motors. 2. Explain why we know that photons, electrons, and in general particles can behave both like waves and like particles?
- How do we describe the the electromagnetic wave? A. Intensity is proportional to the number of photons B. Intensity is not dependent of photons. C. Intensity increases as frequency increases D. Intensity is wavelength dependentAs we go along the electromagnetic spectrum starting at radio waves and ending on gamma rays, which of the following do we discover? A. That the speed of the waves stays constant. B. That the speed of the waves increases.What is the essential difference between gamma rays and green light? A. Gamma rays have an electric field, green light do not. B. There is no essential difference in the nature of gamma rays and green light other than he difference in frequency and wavelength. C. Greenlight undergoes refraction, gamma rays I do not D. Gamma rays are a form of radiation, green light is not E. Greenlight is the beam of photons, gamma rays are not photons
- Which type of light has the greatest wave frequency? Select one: a. ultraviolet light b. visible light O c. infrared d. they all have the same wave frequency e. gamma rays Clear my choiceT-! = 200x10³ D= D= 2x105m += 2x105/3x10²2 +=0·666x103 +=6-660x10²" -4 4. Radar antenna tend to be of comparable size to their wavelength. The radiation used by rad ranges from 300 Mhz to 15 Ghz. a. What is the range of wavelengths? b. If the antenna dimensions are comparable to the wavelength of the radiation used, what will be the approximate size range of antenna used for radar? When used for imaging, the wavelength of the radiation needs to be smaller than the thin eing imaged. To a get a pretty good idea of what kind of radiation is needed to image mething assume that the wavelength must be the size of the object or smaller. With the nd, would visible light work well to image protozoa with a length of 10 micrometers? W out bacteria (about 1 micrometer)? How about a virus (about 9.1 micromotor)?Which type of radiation has a slightly shorter wavelength and slightly higher frequency that visible light? a. infrared radiationb. ultra-violet radiation c. x-rays d. radio waves
- As we go along the electromagnetic spectrum starting at radio waves and ending on gamma rays, which of the following do we discover? A. That the energy of the waves decreases, and the wavelength also decreases. B. That the energy of the waves decreases, and the wavelength increases. C. That the energy of the waves increases, and the wavelength also increases. D.That the energy of the waves increases, and the wavelength decreases.Choose the appropriate regions of the EM spectrum. Note that answers may be used multiple times or not at all. 0Radiation used for communication devices. UV radiation that is strongly absorbed by ozone in the stratosphere. OUV radiation that does not cause sunburn, but can generate highly reactive radicals that can damage DNA. Ionizing radiation created by radioactive materials that is highly dangerous to humans.The name dark energy refers to the fact that a. it adds a negative term to the total energy of the Universe. b. it pervades the entire of the Universe, which is itself dark. c. it is concentrated in galaxies and galaxy clusters, but it is invisible. d. it is not detectable by any sort of light or other electromagnetic radiation. e. scientists are not sure what it is, so they use the term dark energy as a way to emphasize their ignorance.