Test
Color and Light Test
Preguntas del test (83)
1What is the ultimate source of electromagnetic waves?
- ATV antennas
- BVibrating atoms
- CVibrating molecules
- DVibrating charged particles
- ERadio sets
2If an electron vibrates up and down 1000 times each second, it generates an electromagnetic wave having a
- Aspeed of 1000 m/s.
- Bwavelength of 1000 m.
- Cperiod of 1000 s.
- Dfrequency of 1000 Hz.
3Compared to the velocity of radio waves, the velocity of visible light waves is
- Afaster.
- Bslower.
- Cthe same.
4The main difference between a radio wave and a light wave is its
- Aspeed.
- Bwavelength.
- Cspeed and wavelength.
- Dnone of the above.
5Compared to its speed in air, the speed of light in water is
- Athe same.
- Bfaster.
- Cslower.
6Which of the following are fundamentally different from the others?
- AX-rays
- BRadio waves
- CGamma rays
- DSound waves
- ELight waves
7Which of these electromagnetic waves has the shortest wavelength?
- AX-rays
- BLight waves
- CInfrared waves
- DRadio waves
- EUltraviolet waves
8If the sun were to disappear right now, we wouldn't know about it for 8 minutes because it takes 8 minutes
- Afor light to travel from the sun to Earth.
- Bto operate receiving equipment in the dark.
- Cfor the sun to disappear.
- Dall of the above.
- Enone of the above.
9After randomly polarized light passes through a polarizer, it is
- Atotally blocked.
- Bpartially polarized.
- Ctotally polarized.
- Drandomly polarized.
10The source of all electromagnetic waves is
- Avibrating charges.
- Belectric fields.
- Cmagnetic fields.
- Dheat.
- Enone of the above.
11Clouds
- Ablock UV light.
- Bneither block nor transmit UV light.
- Ctransmit UV light.
12Light that reflects at glancing angles from nonmetallic surfaces, such as glass, water, or roads is
- Arandomly polarized.
- Bpolarized parallel to the surface.
- Cpolarized perpendicular to the surface.
13Light does not pass through what kind of materials?
- ATransparent
- BOpaque
- CNeither transparent nor opaque
14Solar eclipses are seen less commonly than lunar eclipses because
- Athe sun is so much larger than the moon.
- Bthe sun is farther from Earth than is the moon.
- CEarth's shadow on the moon is larger than the moon's shadow on Earth.
- Dsolar eclipses don't happen as often as lunar eclipses.
- Enone of the above.
15How far is a light-second?
- A18,000,000 km
- B9,000,000 km
- C5,000 km
- D300,000 km
- E95,000,000,000 km
16If two polarizing filters are held with their polarization axes at right angles to each other, the amount of light transmitted compared to when their axes are parallel is
- Azero.
- Btwice as much.
- Chalf as much.
- Dthe same.
17The shiny surfaces of metals have most to do with
- Aa resonant frequency of electrons in the metal.
- Bthe fact that light reflects from metals.
- Cmetals; relatively high density.
- Dthe free electrons in metal atoms.
18Electromagnetic waves are
- Alongitudinal waves.
- Btransverse waves.
19Glass is transparent to visible light, but not to
- Ainfrared.
- Bultraviolet.
- Cinfrared and ultraviolet.
- Dnone of the above.
20Compared to the wavelength of ultraviolet waves, the wavelength of infrared waves is
- Ashorter.
- Blonger.
- Cthe same.
21Heat lamps give off mostly
- AX-rays.
- Binfrared waves.
- Cradio waves.
- Dultraviolet waves.
- Emicrowaves.
22Electromagnetic waves with higher frequencies have wavelengths that are
- Ashorter.
- Blonger.
23An ideal polarizing filter will transmit 50% of non-polarized light incident on it. How much light is transmitted by two ideal polarizing filters that are oriented with their axes parallel to each other?
- A50%
- BBetween 50% and 100%
- CBetween 0% and 50%
- D0%
- E100%
24Electromagnetic waves
- Acan travel through a vacuum.
- Bneed a medium to travel through.
25Light reflected from a lake surface is polarized
- Arandomly.
- Bvertically.
- Chorizontally.
26Which of the following is NOT an electromagnetic wave?
- ALight
- BInfrared
- CX-ray
- DSound
- ERadio
27What is the frequency of an electromagnetic wave having a wavelength of 300,00 km?
- ALess than 1 Hz
- BMore than 1 Hz
- C1 Hz
28Electromagnetic waves
- Aneed a medium to travel through.
- Bcan travel through a vacuum.
29What is the wavelength of an electromagnetic wave that has a frequency of 1 Hz?
- A1 m
- BLess than 1 m
- CMore than 1 m
30The primary purpose of polarized sunglasses is
- A to block ultraviolet rays.
- Bto block infrared rays.
- Cto block glare from reflections.
- Dto look cool.
31Because of absorption, a polarizing filter will actually transmit 40% of incident non-polarized light. Two polarizing filters with their axes aligned will transmit
- A0%.
- Bbetween 0% and 40%.
- C40%.
- Dbetween 40% and 100%.
- E100%.
32Infrared waves are responsible for sunburn.
- AVerdadero
- BFalso
33A thin beam of light is called an X-ray.
- AVerdadero
- BFalso
34Glass transmits ultraviolet and visible light waves but not infrared waves.
- AVerdadero
- BFalso
35The distance light travels in one year is called light-year.
- AVerdadero
- BFalso
36Materials that allow light to pass through them in straight lines are called opaque materials.
- AVerdadero
- BFalso
37Polarization occurs when waves vibrate in a single direction.
- AVerdadero
- BFalso
38Energy emitted by vibrating electric charges is carried by electromagnetic waves.
- AVerdadero
- BFalso
39A total shadow is called an umbra.
- AVerdadero
- BFalso
40Light sometimes acts as a wave and sometimes as a particle.
- AVerdadero
- BFalso
41According to Einstein, light consists of massless bundles of electromagnetic energy called photons.
- AVerdadero
- BFalso
42Electromagnetic heat waves are called ultraviolet waves.
- AVerdadero
- BFalso
43The color of an object we see is determined by the
- Acolors of light reflected by the object.
- Bfrequencies of light absorbed by the object.
- Ccolors of light shining on the object.
- Dfrequencies of light reflected by the object.
- Eall of the above.
44Sunlight contains all colors of light, but much of it is
- Aorange.
- Bblue.
- Cviolet.
- Dyellow.
- Ered.
45Light shines on a pane of green glass and a pane of clear glass. The temperature will be
- Ahigher in the clear glass.
- Bhigher in the green glass.
- Cthe same in each.
46Colors seen on TV result from color
- Asubtraction.
- Baddition.
- Cnone of the above.
47Different colors of light correspond to different light
- Afrequencies.
- Bpolarities.
- Cintensities.
- Dvelocities.
- Enone of the above
48When blue and yellow paints are mixed together, the result is green. The reason for this is that
- Ablue and yellow are complementary colors.
- Byellow pigments absorb green light and reflect all the others.
- Cblue reflects only blue light, and yellow reflects almost all colors of light.
- Dbetween blue and yellow pigments, all colors are absorbed except green.
- Eblue absorbs yellow light and yellow absorbs blue light.
49Magenta light is really a mixture of
- Ared and yellow light.
- Bred and cyan light.
- Cyellow and green light.
- Dred and blue light.
- Enone of the above
50The color of an opaque object is determined by the light that is
- Aabsorbed.
- Breflected.
- Ctransmitted.
- Dall of the above
- Enone of the above
51If sunlight were green instead of white, the most comfortable color to wear on a hot day would be
- Ayellow.
- Bblue.
- Cgreen.
- Dmagenta.
- Enone of the above
52If molecules in the sky scattered orange light instead blue light, sunsets would be colored
- Ayellow.
- Bblue.
- Cgreen.
- Dorange.
- Enone of the above
53If the atmosphere were 50 times thicker than it now is, the sun would appear
- Ablue-violet.
- Borange-green.
- Cred-orange.
- Dgreen-blue.
- Enone of the above
54The reason the sky is blue is that air molecules
- Aare blue.
- Breflect blue light.
- Cabsorb yellow light.
- Dabsorb and then reemit blue light, scattering it in all directions.
- Eabsorb green light.
55Sunsets are red because
- Athe longest path of sunlight through the atmosphere is at sunset or sunrise.
- Ba lot of high-frequency light is scattered by the atmosphere.
- Cblue light from the sun is scattered by Earth's atmosphere.
- Dall of the above
- Enone of the above
56The true color of water is
- Aclear.
- Bgreenish blue.
- Csky blue.
- Dgreen.
- Ewhite.
57The cyan color of ocean water is evidence that the water absorbs
- Ayellow.
- Bgreen.
- Corange.
- Dblue.
- Ered.
58When a sample of an element is heated until it glows, the color it gives off is
- Aa continuous band of color.
- Ba composite of many frequencies of light.
- Ca single frequency of light.
59The colors of light emitted by incandescent gases show the
- Aabsorbing qualities of gas.
- Bpolarization of atoms in the gas.
- Crelative masses of atoms in the gas.
- Didentities of atoms in the gas.
60The three primary colors of light for additive color mixing are
- Ared, green, and blue.
- Byellow, green, and blue.
- Cred, yellow, and blue.
- Dred, yellow, and green.
- Eyellow, cyan, and red.
61When red and green light shine on a white sheet, the resulting color is
- Ablue.
- Bgreen.
- Cyellow.
- Dmagenta.
- Ecyan.
62The complementary color of blue is
- Ayellow.
- Bcyan.
- Cviolet.
- Dgreen.
- Emagenta.
63The colored dots that make up the color on a TV screen are
- Ared, blue, and yellow.
- Bred, blue, and green.
- Cmagenta, cyan, and yellow.
- Dred, green, and yellow.
- Eyellow, blue, and green.
64Spectral lines in a line spectrum take the shape of lines because the
- Aatoms that emit the light vibrate along parallel lines.
- Blight emitted aligns with the gravitational field.
- Cslit of the spectroscope is itself a line opening.
- Dlight is polarized.
65A photograph of your favorite person's yellow sweater shows as what color on the negative?
- AGreen
- BOrange
- CRed
- DBlue
- EYellow
66Material in an object that selectively absorbs colored light is called a pigment.
- AVerdadero
- BFalso
67Two colors of light that add together to form black light are complementary colors.
- AVerdadero
- BFalso
68A spectroscope is an instrument that analyzes the colors in a light beam.
- AVerdadero
- BFalso
69Some electrons in atoms vibrate at a characteristic frequency that produces white light.
- AVerdadero
- BFalso
70If an object were completely black, you wouldn't be able to see it directly.
- AVerdadero
- BFalso
71If you're looking for an instrument that tells what stars are made of, look for a
- Aspectroscope.
- Btelescope.
- Cstellar microscope.
- Dstethoscope.
72The complementary color of green is
- Ared.
- Bmagenta.
- Cgreen.
- Dyellow.
- Ecyan.
73A sheet of red paper will look black when illuminated with
- Acyan light.
- Bred light.
- Cmagenta light.
- Dyellow light.
- Enone of the above
74The white caps of waves as they overturn are evidence that the water has
- Abroken into an assortment of tiny particles that scatter all colors.
- Blost its transparency.
- Cabsorbed back
- Dreflected red, green, and blue light.
75Humans are most sensitive to light that is
- Ayellow-green.
- Bwhite.
- Cgreen-blue.
- Dred.
- Eblack.
76A tennis ball is most easily seen if its color is
- Ablack.
- Bviolet.
- Cyellow-green.
- Dwhite.
77When red and green light shine on a white sheet, the resulting color is
- Agreen.
- Bblue.
- Cyellow.
- Dcyan.
- Emagenta.
78Earth receives a lot of ultraviolet radiation from the sun. Luckily most of it does't reach the ground, because it is
- Ascattered by the upper atmosphere.
- Babsorbed by a protective layer of ozone gas in the upper atmosphere.
- Cabsorbed by the large amount of air in the atmosphere.
- DActually, there isn't enough UV radiation coming from the sun to harm us.
79The sky is blue because air molecules in the sky act as tiny
- Aresonators that scatter blue light.
- Bmirrors that reflect only blue light.
- Csources of white light.
- Dprisms.
- Enone of the above
80The three paint colors that are useful for color subtraction are
- Ared, green, and blue.
- Bmagenta, cyan, and yellow.
- Cred, blue, and yellow.
- Dmagenta, cyan, and red.
- Emagenta, green, and yellow.
81Complementary colors are two colors that
- Aare next to each other on the color chart.
- Bproduce white light when added together.
- Clook good together.
- Dare primary colors.
- Enone of the above
82The sky is blue because air molecules absorb blue light.
- AVerdadero
- BFalso
83Tennis balls are yellow-green because our eyes are most sensitive to that color.
- AVerdadero
- BFalso
Información
- Descripción
- 11th grade (Color and Light) Physics Test sobre Color and Light Test, creado por Olivia Gibbs el 17/03/2015.
- Autor
- Olivia Gibbs
- Idioma
- English
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