Physical Science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| vibrations are | very small and rapid
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| Oscillations are | Large and slower
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| repeats at a constant rate and passes the same point over and over | periodic motion
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| periodic motion alternates between these | Potential energy and kinetic energy
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| Resting position on a pendulum | when the rod or arm hangs straight down
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| the farthest position away from RESTING postion | Amplitude
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| The time it takes to complete one cycle of a system | Period
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| What the period is measured in | seconds
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| The rate at which cycles repeat | frequency
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| Unit for frequency | Hz (1/s)
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| mathmatical relationship between frequency (f) and period (T) | f= 1/T
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| the pull that wants to restore the string to resting position | restoring force
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| The farther away from rest the ________ the restoring force. | larger
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| The greater the mass the ________________ the periodic motion. | slower
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| The effect of friction on periodic motion - making the amplitude SMALLER | damping
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| The opposite of damping | resonance
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| These have a mass attached to an arm at a pivot point that swings under the influence of gravity. | pendulums
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| Changes the period of a pendulum | arm length or gravity
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| periodic changes that transfer energy | waves
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| mechanical waves require a | medium
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| Electromagnetic waves travel through a | Vacuum
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| Wave crest | top of the wave or the compression of a wave
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| Wave trough | bottom of the wave or the rarefaction of a wave
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| measured from crest to crest or trough to trough | wave length
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| Amplitude is __________ the wave height | half
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| megahertz means | million hertz
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| gigahertz means | billion hertz
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| Mechanical or sound wave speed depends on | the MEDIUM
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| Surface waves depend on the | depth of the water compared to the wavelength
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| Waves in _____________water move faster | deeper
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| a single wave cycle or a very short burst of waves | pulse
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| Rate of waves is porportional to amplitude. If amplitude doubles the rate | quadruples.
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| ______________waves are at right angles to the direction of the waves | transverse waves
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| ________________ waves are parallel to the direction of movement. | longitudinal
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| Sound waves are longitudinal. True or False | true
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| EM waves are longitudinal waves. True or false. | False.
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| The angle of incidence equals the | angle of reflection.
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| When a wave moves from one medium to another, its _______ changes. | Speed
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| When a wave's speed changes as it moves from one medium to another is called | refraction
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| Refraction is an example of how a wave __________ froms it original path | bends
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| Bending does not occur if a wave enters the new medium _____________ to the boundary | perpendicular
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| The frequency of a wave does not change because the frequency is determined by the | source
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| When two waves come together from opposite directions and the amplitudes add together | constructive interfernece
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| When two waves come together from opposite directions and the amplitudes cancel each other out. | destructive interference
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| When 2 traveling waves with exactly the SAME wavelength and frequency move through each other in opposite directions a __ is formed. | standing wave
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| standing waves appear | stationary
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| ____ are points in a standing wave that experience no vertical displacement | nodes
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| This explains how our perception of the sound can change depending on if we are getting closer or farther from the source. | Doppler Effect
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| This is the Doppler effect as applied to light waves. | Red Shift
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| He proved sound needed a medium. | Robert Boyle
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| He showed electric and magnetic fields interact in a wavelike fashion. | James Clerk Maxwell
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| The __ the medium the quicker the sound waves travel. | stiffer
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| EM waves ___ when traveling through matter | slow
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| This is related to frequency. | pitch
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| This is related to amplitude | loudness
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| The Threshold of Hearing | TOH
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| Longest Em waves | radio
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| Shortest EM waves | GAMMA
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| Gamma rays can travel through | humans, steel, concrete
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| Most destructive form of EM radiation | Gamma rays
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Created by:
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