chapter 9

A black light is designed to emit A. UV B. IR C. radio waves D. x-rays

A

A few years ago, a certain kind of spray can was banned. These were the cans that used A. chlorofluorocarbons (CFC's) B. carbon dioxide C. ozone D. they were never banned

A

A positron is A. an anti-electron B. the same as an electron C. a kind of quark D. a hypothesized star

A

A tungsten lightbulb has 100 watts printed on it.About how much power is actually emitted as visible light A. 16 watts B. 40 watts C. 100 watts D. 220 watts

A

Bats navigate in caves by using A. ultrasound B. IR C. black light D. radar

A

Cell Phones emit A. microwaves B. x-rays C. gamma rays D. P waves

A

Heat Radiation is also called A. IR B. UV C. white light D. gamma rays

A

Infrared radiation can (choose all that apply) A. help snakes locate prey B. create ozone C. cause cancer D. cause sunburn

A

Ozone depletion is caused by A. CFC's B. carbon dioxide C. fossil fuels D. cosmic rays

A

Sunburn is usually caused by A. UV radiation B. IR radiation C. X radiation D. gamma radiation E. visible light F. all the above

A

Which of the following exposes a person the the kind of radiation that can cause cancer A. computer-aided tomography (CAT) scans B. magnetic resonance imaging (MRI) C. positron-emission tomography (PET) D. thermography

A

Which of the following has the highest frequency? A. gamma rays B. UV C. IR D. microwaves

A

Which of the following is best for seeing the calcium in bones A. x-ray B. MRI C. PET scan D. EEG

A

heat seeking missle actually aims itself toward A. infrared light B. ultraviolet light C. visible light D. radio waves

A

to image hydrogen in the brain, the best technique is A. MRI B. CAT C. PET D. x-ray

A

"cool roofs" A. must be white in the visible B. must reflect infrared C. must be brown in the visible D. do not absorb UV

B

Because of their warmth humans emit primarily A. sonic radiation B. infrared radiation C. ultraviolet radiation D. visible radiation

B

Dew forms when the ground cools A. by emitting UV B. by emitting IR C. by emitting visible light D. by conduction downward

B

In total darkness, you can see people if you have a camera that is sensitive to A. ultraviolet radiation B. infrared radiation C. gamma radiation D. far ultraviolet radiation

B

Microwave ovens use radiation with a wavelength A. about one micron B. same as radar C. same as lasers D. same as AM or FM radios

B

Multispectral refers to A. UV, IR, and visible B. the many colors in visible light C. UV, IR, and x-rays D. "whiter than white"

B

Pit vipers and mosquitoes an sense A. UV radiation B. IR radiation C. Gamma rays D. microwaves

B

Radio waves and xrays have the A. same frequency B. same speed C. same wave length D. same energy E. none of the above

B

Remote control of a TV is usually done using A. UV B. IR C. microwaves D. X-rays

B

The advertising slogan whiter than white means that the material A. emits IR B. emits visible light C. absorbs IR D. emits UV

B

The name NMR has been changed to A. CAT B. MRI C. ultrasound D. PET

B

The original name for the microwave oven was A. convection oven B. radar range C. radio oven D. microwave

B

To image the hydrogen in the body use A. PET scan B. MRI C. CAT D. x-ray

B

Which of the following has the lowest frequency? A. TV B. AM radio C. visible light D. gamma rays

B

As an object get hotter and hotter, the color of its glow will change from A. white, to yellow, to red, to blue B. blue, to white, to yellow, to red C. red, to yellow, to white, to blue D. yellow to white, to blue to red E. none of the above

C

Cancer is most likely to be caused by A. infrared radiation B. microwave radiation C. ultraviolet radiation D. white light

C

Each of these make use of infrared radiation except A. capturing illegal immigrants B. military "night vision" C. measurements of wave velocities in the ocean D. using trees to keep morning dew off campers

C

If you double the absolute temperature of an object, the wavelength of the emitted light A. gets longer by a factor of 2 B. gets longer by a factor of 16 C. gets shorter by a factor of 2 D. gets shorter by a factor of 16

C

If you sleep under a tree you wont get wet from morning dew. That's because the tree A. absorbs starlight B. keeps air from rising C. emits infrared radiation D. blocks the clouds

C

Invisible light includes A. UV, quarks, and gluons B. x-rays, UV, and IR C. x-rays, ultrablue, and ultrared D. quanta, antiwhite, and photons

C

Sunlight is brightest in which color? A. UV B. red C. green D. blue E. IR

C

The best kind of radiation to purify water A. visible B. IR C. UV D. microwave

C

The microwaves in a microwave oven mostly heat A. carbon B. air C. water D. oxygen

C

The phosphor of a fluorescent lightbulb turns which of these into visible light A. x-rays B. infrared light C. ultraviolet light D. alpha rays

C

What is the cause for "windburn" A. cold from the wind B. friction from wind C. solar UV D. solar IR

C

Which kind of light has the longest wavelength? A. red light B. blue light C. infrared light D. ultraviolet light

C

Which of the following is a typcal energy for an x=ray? A. 1 eV B. 1000 eV C. 50,000 eV D. 1,000,000 eV

C

Which of the following is an advanced method that uses x-rays A. MRI B. PET C. CAT D. SAR

C

Which of the following uses antimatter A. CAT scan B. MRI C. PET scan D. x-ray

C

If you double the absolute temperature the total radiation A. it reduces to half B. doubles C. increases by 4 D. increases by 16

D

MRI maps the distribution of with elements to produce and image A. iodine B. carbon C. calcium D. hydrogen

D

Most of the energy of an ordinary tungsten-filament lightbulb is emitted A. ultraviolet B. green C. red D. infrared

D

The clouds in the thunderstorms rise until they reach A. the carbon dioxide layer B. the CFC layer C. the top of the atmosphere D. the ozone layer

D

The ozone layer is created by and absorbs A. CFC's (chlorofluorocarbons) B. carbon dioxide from fossil fuels C. cosmic rays D. ultraviolet radiation

D

To make clothes appear extra cleans, manufactures apply A. infrared radiation B. electron beam C. ultraviolet radiation D. fluorescent dyes

D

Which of the following statements about the ozone layer is not true A. the location of the ozone layer is the tropopause B. the ozone layer causes thunderstorms to spread laterally C. Ozone is destroyed by chlorine ( e.g. from freon and other CRC's) D. ozone is the most important greenhouse gas

D

which color of star would be the hottest A. blue B. red C. orange D. white

D

UV light A. is responsible for sunburns and windburns B. is used to kill bacteria in the water of remote villages in India C. is also called black light D. is also called heat radiation E. all the above

E

which of the following are electromagnetic waves? A. radar B. visible light C. UV D. x-rays E. all the above

E