PHY1020-Chapter 9 Word Scramble

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Question	Answer
Which of the following has the highest frequency? ~Gamma rays ~UV ~IR ~Microwaves	Gamma rays
Which of the following has the lowest frequency? ~TV ~AM radio ~Visible light ~Gamma rays	AM Radio
If you double the absolute temperature of an object, the wavelength of emitted light:	GEts shorter by a factor of 16
Which kind of light has the longest wavelength? ~Red light ~Blue light ~Infrared light ~Ultraviolet light	Infrared light
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:	Increases by 16
Most of the energy of an ordinary tungsten-filament lightbulb is emitted in the color:	Red.
Heat radiation is also called:	IR
A tungsten lightbulb has 100 watts printed on it. About how much power is emitted as visible light?	16 watts
Which color star would be the hottest ~Blue ~Red ~Orange ~White	Blue
Sunlight is brightest in which color?	IR
Which of the following exposes people to the kind of radiation that can cause cancer?: ~computer-aided tomography (CAT) scans ~magnetic resonance imaging (MRI) ~Positron-emission tomography (PET) ~thermography	Computer-aided tomography (CAT) scans
Because of their warmth, humans primarily emit:	Infrared radiation
If you sleep under a tree, you won't get wet from morning dew. 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:	CFCs
A few years ago, a certain kind of spray can was banned. These were the cans that used:	Chlorofluorocarbons (CFCs)
Multispectral refers to:	UV, IR, and visible
The name NMR has been changed to:	MRI
Which of the 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 use 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:	~Is responsible for sunburns and windburns ~Is used to kill bacteria in the water of remote villages in India ~Is also called black light
Which of the following is the best for seeing 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 antimatter? ~CAT scan ~MRI ~PET scan ~x-ray	PET scan
To image 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 mosquitos 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 energy for an x-ray?	50,000 eV
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 visble light?	Ultraviolet light
"Cool roofs"	Must reflect infrared.
The best kind of radiation to purify water is	UV
Which of the following are electromagnetic waves? ~Radar ~Visible Light ~UV ~X-rays	~Visible Light ~UV ~X-rays
To image hydrogen in the brain, the best technique:	MRI
Which of the following is an advanced methos that uses x-rays?	CAT

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