Bonnie Branch MS 8th
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| energy source | an object that is the supplier of energy
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| energy receiver | an object to which the energy is transferred
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| wave | a continuous succession of pulses
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| transverse wave | a wave in which the motion of the material (medium) is perpendicular to motion of the wave
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| amplitude | the height of a wave crest. It is related to a wave’s energy
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| wavelength | the distance between identical points along a wave
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| frequency | the number of waves produced per unit time
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| compression (longitudinal) wave | a wave in which the motion of the material (medium) is parallel to the motion of the wave
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| pitch | the quality of a sound dependent mostly on the frequency of the sound wave
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| ultrasound | compression waves at much higher frequency that animals or humans can hear
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| fault | a fracture in rock, along which the rock masses have moved
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| earthquake | a sudden motion or shaking of the earth
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| P wave | a seismic wave that involves motion in the direction in which it is traveling: it is the fastest of the seismic waves
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| S wave | a seismic wave that involves vibration perpendicular to the direction the wave is traveling: it arrives later than the P wave
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| L wave | a seismic wave that travels along the surface of the Earth: they are the last to arrive at a location
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| seismograph | an instrument that detects seismic waves
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| tsunami | a great sea wave produced by an earthquake (or volcanic eruption) on the ocean floor
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| mechanical energy | the energy transfer involved in an interaction that causes one or both objects to change position
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| constant speed | neither speeding up nor slowing down
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| linear relationship | the relationship between two quantities that, when plotted against each other on a graph, produce a straight line
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| slope | the tilt or slant of a straight line on a graph: the rise divided by the run
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| average speed | the distance traveled divided by the time taken
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| nonlinear relationship | the relationship between two quantities that, when plotted against each other on a graph, do not produce a straight line
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| velocity | how fast an object is moving in a given direction
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| acceleration | the change in velocity per unit time
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| energy | ability to do work or cause change
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| potential energy | stored energy
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| kinetic energy | energy in motion
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