Spectral Regions







which of the following has the smallest frequency

A ultraviolet

B infrared

C x-ray

D microwave



which region of the spectrum is associated with heat

A microwave

B infrared

C visible

D ultraviolet



which of the following waves is the same kind of wave as a visible light wave

A sound wave

B wave in water

C x-ray

D gravity wave



the biologically most damaging rays have

A the highest speed

B the longest wavelength

C the shortest wavelength

D the lowest frequency



the combination of all colors of visible light is

A black

B white

C invisible

D x-ray



a vibrating electron could emit

A x-rays only

B visible light only

C radio waves only

D all of these, depending on the rate of vibration



compared to radio waves, ultraviolet light

A travels faster.

B has a longer wavelength.

C has more energy per photon.

D has a lower frequency.



which of the following is commonly used in cancer therapy

A ultraviolet

B infrared

C gamma rays

D microwaves



radiation therapy for cancer uses

A microwaves

B gamma rays

C powerful nuclear reactions

D high speed electrons



which of the following has the longest wavelength?

A red light.

B blue light.

C green light.

D infrared light.

E ultraviolet light.



which of the following produces the greatest damage in biological tissue

A radio

B ultraviolet

C infrared

D gamma



which of the following has the shortest wavelength

A ultraviolet

B infrared

C gamma ray

D radio?



the combination of all colors of light is seen as

A black

B brown

C white

D cannot be seen as they cancel each other



which of the following is an electromagnetic wave?

A sound wave

B cosmic ray proton

C gravitational wave

D microwave



which of the following has the lowest frequency

A radio waves

B visible light

C x-rays

D infrared?



radio waves have

A high energy and long wavelength

B low energy and long wavelength

C low energy and short wavelength

D high energy and short wavelength



which of the following light waves has the lowest frequency

A green

B infrared

C ultraviolet

D radio



which of the following lists the major domains of the electromagnetic spectrum in order of increasing energy per photon (least energetic first)

A radio, infrared, visible, ultraviolet, x-ray, gamma ray

B gamma ray, x-ray, ultraviolet, visible, infrared, radio

C gamma ray, x-ray, ultraviolet, infrared, radio, visible

D visible, radio, infrared, ultraviolet, x-ray, gamma ray



a microwave is a form of

A sound waves

B air waves

C light waves

D wave which is unique and totally different from all others



which of the following types of photons has the highest energy

A x-rays

B visible light

C infrared

D gamma rays



the wavelength of ultraviolet radiation is

A longer than visible light

B shorter than visible light

C either (a) or (b)

D no choice



radio waves compared to visible light waves

A travel faster

B travel slower

C travel faster or slower depending on their wavelength

D travel at the same speed



food cooked with microwaves

A does not get hot

B must first be soaked in water

C must contain water in the cells

D must be placed in a metal container



which is the correct sequence of electromagnetic radiations, in order of I easing energy of the photons (or quanta)?

A visible light, UV radiation, x-rays, gamma rays

B radio waves, microwaves, gamma rays, UV radiation

C visible light, microwaves, radio waves, infrared rays

D gamma rays, radio waves, x-rays, infrared rays



which of the following has the longest wavelength

A blue

B ultraviolet

C infrared

D green?



which of the following produces a sun tan

A infrared

B ultraviolet

C microwaves

D x-rays



which of the following is true of visible light?

A its speed in a vacuum is about 186,000 miles per second.

B a kind of light that has a longer wavelength than another will have a lower frequency than the other.

C it has exceedingly short wavelengths.

D answers a, b, and c are correct.



which of the following forms of light most easily damages biological organisms due to the energy of its oscillations

A ultraviolet

B visible

C infrared

D radio



which of the following is not a form of light

A gamma

B microwave

C ultra-sonic

D infrared



in an infrared photo taken on a cool night your skin will appear brighter than your clothes.

A correct.

B wrong; it depends upon the color of your clothes.

C wrong; your clothes will appear brighter.

D wrong; they will be equally bright.



what do x-rays and radio waves have in common

A they damage biological tissue

B they are easily visible to the unaided eye

C they are both emitted in significant amounts by normal stars

D they differ form ordinary visible light only in size



the energy of a photon of x rays, in relation to the energy of a photon of visible light, is

A much higher

B much lower

C variable, and can be higher or lower under certain circumstances and in certain positions in the universe

D about the same



for which of the following is ultraviolet radiation responsible or used

A cooking

B sunburn

C radiation therapy treatment of cancer

D heat lamps



which of the following has the longest wavelength

A blue

B x-rays

C ultraviolet

D red



in the overall electromagnetic spectrum, consider radio, visible light, and gamma rays in terms of their wavelength. their correct order, from longest to shortest, is

A radio, visible, gamma rays.

B gamma rays, visible, radio.

C visible, gamma rays, radio.

D visible, radio, gamma rays.

E radio, gamma rays, visible.



which of the following types of electromagnetic radiation has a wavelength adjacent to but longer than visible light?

A radio

B infrared

C x-ray

D ultraviolet



which of the following has the longest wavelength

A infrared

B x-ray

C microwave

D visible



which of the following is not a type of electromagnetic radiation

A visible light

B radio waves

C x-rays

D sound waves



which of the following is not one of the colors of the spectrum

A red

B brown

C green

D violet



a gamma-ray and visible light differ in that

A a gamma-ray is more energetic

B a gamma-ray is a moving charged particle while light is not

C light is an electromagnetic wave while a gamma-ray is not

D a gamma-ray is not a photon



visible light, in the whole electromagnetic spectrum, occupies what position

A between infrared and microwaves

B between radio and infrared radiation

C between ultraviolet and x-rays

D between infrared and ultraviolet



what is the one fundamental difference between x-rays and radio waves?

A they always come from different sources

B radio waves are always wavelike, while x-rays always behave like particles

C their wavelengths are very different

D their speed in outer space are different



the wavelength of infra-red radiation is shorter than that of

A x-rays

B radio waves

C violet light

D ultraviolet radiation



which of the following consists of electromagnetic waves with the shortest wavelength?

A a beam of red light

B a radio broadcast of Saturday's football game

C the beloved sound of your astronomy instructor's voice

D the x-rays in your dentist's office



choose the correct sequence of electromagnetic radiations, in order of increasing wavelength

A UV, visible, ir, radio

B visible, UV, ir, radio

C radio, ir, visible, UV

D UV, visible, radio, ir



light ray, x-rays, and radio waves

A are fundamentally different phenomena

B are forms of radiation that differ only in wavelength

C travel at different speeds

D are different words for identical waves



which of the following has the shortest wavelength

A yellow

B red

C green

D blue



which of the following is not a type of electromagnetic radiation?

A radio waves

B x-rays

C sound waves

D infrared energy



consider an x-ray photon and a visible-light photon. if we compare the frequencies of the two photons, we can be sure that

A the x-ray photon has a greater frequency than the visible-light photon

B the visible-light photon has a greater frequency than the x-ray photon

C the two photons have almost the same frequency

D we cannot say which photon has the greater frequency without additional information



which of these forms of electromagnetic radiation usually can reach the ground freely from space?

A gamma rays

B ultraviolet

C visible

D all of the above



which of the following has the slowest frequency

A infrared

B ultraviolet

C radio

D x-rays



the wave with the longest wavelength is

A radio

B ultraviolet

C infrared

D gamma



when light is spread into its component colors the resulting band of light is called:

A diffraction.

B refraction.

C analog reflection.

D a spectrum.



where does red light fit in the visible spectrum?

A at the long wavelength end.

B in the middle.

C at the short wavelength end.

D beyond the long wavelength limit of infrared radiation.



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