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Work Waves and Power
Question | Answer |
---|---|
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 |