USATESTPREP – Flashcards
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9) X-rays UV light waves Sound waves Earthquake waves All of these have which characteristic in common?
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They all transmit energy.
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14) Which example is NOT a part of the electromagnetic spectrum?
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electricity
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15) When light enters a pair of glasses, it ______________ when it hits the glass.
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refracts
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16) In each of these situations light refracts, except for one. Identify the case in which light is NOT refracted.
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sunlight travels through space
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17) Reflection is the bouncing of light rays off of a surface. Which situation is NOT an example of reflection?
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focusing light through a camera lens
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21) Why can television satellites, which broadcast information as electromagnetic radiation, send signals from the vacuum of space?
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because electromagnetic radiation does not need a medium to travel through
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22) In what way are all sound waves and light waves similar?
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they both transmit energy
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25) What information can be deduced by analyzing the graph?
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Wavelength and frequency have an inverse relationship.
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27) Dolphins communicate using compression waves. Some of these sounds are outside the range of human hearing. Upon spotting a hungry shark, dolphin A sends a message to dolphin B. To send this message as quickly as possible, dolphin A would
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send the message under water
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37) The BEST example of diffraction is the image of
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a ring around the Sun caused by particles in the air.
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42) We can see because light is
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reflected
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44) Longitudinal waves compress the medium they travel though. One example of a longitudinal wave is a
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sound wave
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47) Assume the light wave directed at the paper is white light and the paper contains pigments that absorb the wavelengths of red-orange-yellow-green-blue-indigo-violet. What color will the paper appear to human eyes?
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black
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51) Using an oscilloscope, it can be observed that the pitch of a sound is directly related to a sound waves frequency while the volume is directly related to a sound waves amplitude. The change shown in the illustration suggests that the
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volume is decreasing
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54) If we compare and contrast electromagnetic waves with sound waves, all BUT one statement is true. That is
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electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere.
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58) · sound · parallel · mechanical · not a vacuum · needs a medium · compressions and rarefaction What type of wave is being described?
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longitudinal
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70) What do a prism, a magnifying glass, a microscope, and eyeglasses ALL have in common
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they refract light
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77) Which of these are not mechanical waves and can be used to send a signal to astronauts on the moon?
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radio waves
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79) Sound waves cannot travel in a vacuum because
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there is no medium for the sound waves to travel through
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81) Why do people tend to cup their hands around listeners ears when whispering to them?
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Solid objects, such as a cupped hand, can direct sound waves into the ear of the listener.
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81) Why do people tend to cup their hands around listeners ears when whispering to them?
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Solid objects, such as a cupped hand, can direct sound waves into the ear of the listener.
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81) Why do people tend to cup their hands around listeners ears when whispering to them?
answer
Solid objects, such as a cupped hand, can direct sound waves into the ear of the listener.
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