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Physics Chapter 9

QuestionAnswer
Which of the following has the highest frequency Gamma rays
Which of the following has the lowest frequency? AM radio
If you double the absolute temperature of an object, the wavelength oof the emitted light gets longer by a factor of 2
Which kind of light has the longest wavelength infrared lighte
Invisible light includes x-rays,UV, and IR
As an object gets hotter and hotter, the color of its glow will change from red, to yellow, to white, to blue
Radio waves and x-rays have the same speed
If you double the absolute temperature, the total radiation increasese by 16
Most of the energy of an ordinary tungsten-filament lightbulb is emitted in the color infrared
Heat radiation is also called IR
A tungsten lightbulb has 100 watts printed on it. About how much power is actually emitted as visible light? 16 wattsq
Which color star would be the hottest? blue
Sunlight is brightest in which color? green
Which of the following exposes a perosn to the kind of radiation that can cause cancer? Computer-aided tomography (CAT) scans
Because of their warmth, humans emit primarily infrared radiation
if you sleep under a tree, you won't get wet from morning dwe. That's because the tree emits infrared radiation
Dew forms when the ground cools by emitting IR
A "heat-seeking" missile actually aims itself toward infrared light
The ozone layer is created by and absorbs ultraviolet radiation
Ozone depletion is caused by (choose all that are correct) CFCs
A few years ago, a certain kind of spray can was banned. These were the cans that usedq CFCs
Multipectral refers to the many colors in visible light
The name NMR has been changed to MRI
Which of the following statements about the ozone layer is not true? Ozone is the most important greenhouse gas
The clouds in thunderstorms rise until they reach the ozone layer
the original name for the microwave oven was radar range
microwave ovens used radiation with a wavelength same as radar
the microwaves in a microwave oven mostly heat water
MRI maps the distribution of which element to produce an image hydrogen
UV light(choose al lthatare correct) is responsible for snburns and windburns, is used to kill bacteria in the water of remote villages and in India, is also called black light, is also called heat radiation
Which of the following is best for seeing the calcium in bones? x-ray
A black light is designed to emit UV
a positron is an antielectron
Sunburn is usually caused by UV radiation
Which of the following uses intimatter? PET scan
To image the hydrogen in the body, use MRI
what is the cause for "windburn"? solar UV
Remote control of a TV is usually done using IR
Pit vipers and mosquitoes can sense IR radiation
Infrared radiation can help snakes locate prey
Cancer is most likely to be caused by ultraviolet radiation
The advertising slogan "whiter than white" means that the material emits visible light
To make clothes appear extra clean, manufacturers apply fluorescent dyes
Which of the following is a typical energyh for an x-ray? 50,000eV
In total darkness, you can see people if you have a camera that is sensitive to infrared radiation
Cell phones emit Microwaves
Each of these make use of infrared radiation except measurement of wave velocities in the ocean
Bats navigate in caves by using ultrasound
The phosphor of a fluorescent lightbulb turns which of these into visible light? ultraviolet light
"Cool roofs" must reflect infrared
The best kind of radiation to purify water si UV
Which of the following are electromagnetic waves? Radar, Visible light, UV, microwaves
To image hydragen inthe brain, the best technique is MRI
Which of the following is an advnaced method that uses x-rays? CAT
Created by: jimlynch
 

 



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