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# Kaitlyn Gardner

### My Study Stack

What is a wave? A wave is vibration of a medium.
What is medium? Medium is the material through which a wave can travel.
What is a transverse wave? A transverse wave is a wave that moves perpendicularly to the direction the wave travels.
What is the crest? The crest is the highest points in a wave.
What is the trough? The trough is the lowest points in a wave.
What is a longitudinal wave? A longitudinal wave is a wave vibrating in the direction of the motion of the wave.
What is compression? Compression is when a wave tightens or compresses.
What is rarefaction? Rarefaction is when a wave spreads out.
What are mechanical waves? Mechanical waves are waves the require a medium.
What are electromagnetic waves? Electromagnetic waves are waves that travel without a medium.
What is amplitude? Amplitude is how far the partials in the medium move from it's rest position.
What is a wavelength? A wavelength is any point on a way to the next identical point on the same wave.
What is frequency? Frequency is the number of waves that pass a point in a given amount of time.
What is hertz? (Hz) Hertz is what the frequency is measured in.
What is wave speed? Wave speed is the speed that waves travel at.
What is the equation for wave speed? Hertz times wavelength.
What is force? What is the measurement unit for force? Force is a push or pull applied on an object in order to change the motion of the abject. Force = Newtons
What is work? Work is the use of force to move an object some distance.
What is the equation for work? What is the measurement unit for work? Force times distance = work (joules)
What is power? Power is the amount of work you have done divided by how long it took you to do it.
What is the equation for power? What is the measurement unit for power? Work divided by distance = power (watts)
If 200 Joules of work are needed to move a bike a distance of 10 meters, what is the weight of the bike? 200/10 or 200 divided by 10 = 20 Newtons This bike weighs 20 Newtons.
If 50 Joules of work were needed to move a 2 Newton book, how far was the book moved? 50/2 or 50 divided by 2 = 25 meters The book was moved 25 meters.
How much time is needed to produce 800 Joules of work if 20 watts of power is used? 800/20 or 800 divided by 20 = 40 seconds
If 50 W of power is produced in 10 seconds, how much work is done? 50/10 or 50 divided by 10 = 5 Joules
How does work relate to force? Force is in the equation for work.
When is work used? Work is used when you want to find how much power you have done.
How does time relate to work? Time relates to work because work divided by time will equal power.
How are the crest and trough similar? Both the crest and trough are points of a wave measuring how high or low the wave goes.
Can a wave travel through a medium that is a liquid? Yes, the wave might go slower than going though a gas but it can still go through a liquid.
Does a electromagnetic wave require a medium? No, electromagnetic waves travel with out a medium. Examples of electromagnetic waves are ultraviolet waves, radio waves, and many more types of waves.
Created by: 311699