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Discover the fascinating characteristics of light and sound waves, including speed, wavelength, colors, and interactions with materials. Learn about electromagnetic waves, color mixing, and the physics of light travel.
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Q: Which travels faster, sound or light? A: Sound B: Light
Q: Which can travel through a vacuum (space with no substance)? A: Light B: Sound
Which type of wave has longer wavelength?A. Radio wavesB. Visible lightC. Gamma rays
Q: What travels faster than light? A: microwaves B: nothing C: sound D: air
Q: What type of particles make up light? • A: air • B: atoms • C: molecules • D: photons
Q: Which is not a primary color? A: red B: green C: blue D: yellow
Q: If you add red, yellow, and blue light together what color light do you get? A: white B: black C: brown D: green
Q: If a wave has a short wavelength, what type of frequency does it have? A: high B: low
What color does an object look that reflects light of all wavelengths in equal amounts? A: white B: black C: red D: blue
Q: Which color of light has the longest wavelength? A: purple B: blue C: green D: red
Q: About how long does it take for light to travel from the sun? A: 2 seconds B: 30 seconds C: 8 minutes D: 1 hour
The color of an object we see is determined by the a. colors of light reflected by the object. b. frequencies of light absorbed by the object. c. colors of light shining on the object. d. frequencies of light reflected by the object. e. all of the above
Colors seen on TV result from color a. subtraction. b. addition. c. none of the above
When blue and yellow paints are mixed together, the result is green. The reason for this is that a. blue and yellow are complementary colors. b. yellow pigments absorb green light and reflect all the others. c. blue reflects only blue light, and yellow reflects almost all colors of light. d. between blue and yellow pigments, all colors are absorbed except green. e. blue absorbs yellow light and yellow absorbs blue light.
The three paint colors that are useful for color subtraction are a. magenta, cyan, and red. b. red, blue, and yellow. c. magenta, green, and yellow. d. red, green, and blue. e. magenta, cyan, and yellow.
A sheet of red paper will look black when illuminated with a. cyan light. b. yellow light. c. red light. d. magenta light. e. none of the above
The reason the sky is blue is that air molecules a. are blue. b. reflect blue light. c. absorb yellow light. d. absorb and then reemit blue light, scattering it in all directions. e. absorb green light.
Electromagnetic waves are • transverse waves. • b. longitudinal waves.
Compared to the velocity of radio waves, the velocity of visible light waves is a. slower. b. faster. c. the same.
Which of the following are fundamentally different from the others? a. Gamma rays b. Radio waves c. Sound waves d. Light waves e. X-rays
Compared to its speed in air, the speed of light in water is a. slower. b. the same. c. faster.
Glass is transparent to visible light, but not to a. ultraviolet. b. infrared. c. both a and b. d. none of the above
What is the ultimate source of electromagnetic waves? a. Vibrating atoms b. Vibrating molecules c. Radio sets d. Vibrating charged particles e. TV antennas
Light does not pass through what kind of materials? a. transparent b. opaque c. neither a nor b
What is the wavelength of an electromagnetic wave that has a frequency of 1 Hz? a. More than 1 m b. Less than 1 m c. 1 m
If 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 a. zero. b. half as much. c. the same. d. twice as much.