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# Work Waves and Power

What is a disturbance that transfers energy? A wave
What is the material through which a wave can travel? Medium
In which wave do the particles move perpendicularly to the direction the wave travels? Transverse wave
What is the highest point in a wave called? The Crest
What is the lowest point in a wave called? The Trough
In which do the particles move back and forth in the same direction that the wave travels? A Longitudinal Wave
What is the part of the wave in which it is compact called? Compression
What is the not compact part of a wave called? Rarefaction
What wave requires a medium? Mechanical Waves
What waves are not disturbances in a physical medium? Electromagnetic Waves
What is the measure of how far particles in the medium move from their rest position? Amplitude
What is the distance from any point on a wave to the next identical point on the same wave? Wavelength
What is the number of waves that pass a point in a given amount of time? Frequency
What is the measurement that frequency is measured in? Hertz (Hz)
What is the speed that waves travel called? Wave speed
What is a push or pull exerted on an object in order to change the motion of the object? Force
What is the use of force to move an object some distance? Work
What is the ability to do something or act in a particular way? Power
A man pushed a 23 pound box 3 feet, how much work was done 69 Joules (w= dxf)
It took a 70 Newton girl 50 seconds to walk up stairs that were 5 centimeters high each, how much power was used? 7 Watts
If the frequency of a wave was 50 Hz and the wavelength was 10 centimeters, find its speed. 500 cm per second
When you turn up the music on your ipod, what are you really turning up? the amplitude
What happens to the wavelength when the frequency is high? the wave length decreases
What happens to the wavelength when frequency is low? the wave length increases
What wave allows us to hear sound? Sound waves
When you speak, what happens if your voice has a high frequency? You have a higher voice
Created by: Rbyerly