Chapter 8 1 An indication that light is a wave is a Hat it has dark bands in the different 2 The colors of an oil slick indicate that a Light is a wave 3 The index of refraction measures a The speed of light 4 Lights waves are a Transverse 5 The resolution of a human eye is about 6 Which of the following has the lowest index of refraction a 1 60 degree a Air 7 As the wavelength of light decreases the frequency a Increases about 100 feet In one millionth of a second light will travel 8 9 A piece of glass is shape like a pyramid The side of the pyramid is tilted at degrees with respect to the horizontal A beam of light is inside the glass moving horizontally When it emerges from the tilted surface of the glass it will be moving 10 A stop sign is bright when you shine the headlamps of your car on it It most likely is 13 Two soap bubbles from the same soap appear to be different colors They probably have covered with a Small glass spheres 11 Diamonds sparkle in many colors because a Light velocity depends on color 12 Which of the following are retro reflectors a Chose all a Different thickness a 2 3 c 14 If c is the speed of light in glass is approximately 15 Stealth bombers are undetected by radar in part because a Of the absence of corner reflectors 16 Rainbows show different colors because a In water different frequencies have different velocities 17 Which of the following is polarized a Blue sky light 18 A fiber can send much more information per second than a wire because a Light has a very high frequency 19 Which color of light would give the highest number of bits per second in fiber optics a Blue a The bit 20 Shannon is famous for having invented or discovered 21 The human eye has cones that detect a Green blue red 22 People squint to see better because squinting a Reduces the blur size 23 Old people need reading glasses because their Lenses become less flexible 24 Red eye in photographs comes from a a Light of the flash reflecting off the retina 25 Red eye demonstrates a The eye is a retroreflector 26 Your eye has a Two lenses the lens and the cornea 27 Light is polarized when it bounces off a Choose all a Reflected light is polarized 29 Polaroids are used for 3d movies because a They give a different image to each eye 30 Stress in plastic can be detected by looking at a Polarized light crossed polaroids 31 In a pinhole camera more blurring occurs if a The hole is either very large or very small 32 Holograms depend on the fact that light a Is a wave 33 A successful fisherman will throw the spear a Below the fish image 28 Sunglasses can help you see a fish underwater because 35 The wavelength of visible light is closest to diameter of a Use a large mirror a Red blood cell 36 The keck telescope is powerful because a It has a bigger mirror to collect light 37 When you say a man is color blind we usually mean that a He can t distinguish red from green 38 The keck uses what to focus light a A mirror nanosecond it will go about a 66 foot 40 Present day 3d movies make use of which technology 41 A computer screen does not have spots that are colored a Polarizers a White 34 To make a spy satellite that can read a license plate you would have to 39 Light in a vacuum goes 1 foot every nanosecond billionth of a second In water in one 42 For a good telescope like Hubble in geosynchronous orbit HEO a typical resolution for objects on the surface is about a 20 feet 43 A major use of fiber optics is for a Communication Chapter 9 1 Which of the following has the highest frequency 2 Which of the following has the lowest frequency a gamma rays a AM radio a gets shorter by a factor of 2 4 Which kind of light has the longest wavelength a infrared light 5 Invisible light includes a x rays UV and IR 3 If you double the absolute temperature of an object the wavelength of the emitted light 6 As an object gets hotter and hotter the color of its glow will change from a red to yellow to white to blue 7 Radio waves and x rays have the 8 If you double the absolute temperature the total radiation a same speed a increases by 16 9 Most of the energy of an ordinary tungsten filament lightbulb is emitted in the color 11 A tungsten light bulb has 100 watts printed on it About much power is actually emitted a infrared 10 Heat radiation is also called a IR as visible light a 16 watts a blue a green 12 Which color star would be the hottest 13 Sunlight is brightest in which color 14 Which of the following exposes a person to the kind of radiation that can cause cancer 16 If you sleep under a tree you won t get wet from morning dew That s because the tree a computer aided tomography CAT scans 15 Because of their warmth humans emit primarily a infrared radiation a emits infrared radiation 17 Dew forms when the ground cools 18 A heat seeking missile actually aims itself toward a by emitting IR a infrared light a CFCs 19 The ozone layer is created by and absorbs choose all that are correct 20 Ozone depletion is caused by choose all that apply a 21 A few years ago a certain kind of spray can was banned These were the cans that used a chlorofluorocarbons CFCs 22 Multisprectral refers to a the many colors in visible light 23 The name NMR has been changed to a MRI 24 Which of the following about the ozone layer is not true a Ozone is the most important greenhouse gas 25 The clouds in thunderstorms rise until they reach 26 The original name for the microwave oven was 27 Microwaves use radiation with a wavelength 28 The microwaves in a microwave oven mostly heat a the ozone layer a radar range a same as radar a water a hydrogen 29 MRI maps the distribution of which element to produce an image 31 Which of the following is best for seeing the calcium in bones 30 UV light choose all that are correct a is also called heat radiation 32 A black light is designed to emit a x ray a UV 33 A positron is a an antielectron 34 Sunburn is usually caused by a UV radiation 35 Which of the following uses antimatter 36 To image the hydrogen in the body use 37 Which is the cause for windburn a PET scan a MRI a solar UV a IR 38 Remote control of a TV is usually done using 39 Pit vipers and …
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