|Is a push or pull exerted on an object in order to change the motion.
Define and give an example to describe work
|The use of force to move an object some distance
EXAMPLE: A person pushing a box
|What is this?
High bands of water or sound.
|The top of a wave is called?||Crest|
|What is a trough?||The bottom of the waves|
|Define and know what a longitudinal wave looks like.||Energy is transferred from one end of the spring toy to the other going back and fourth.
A longitudinal wave is straight and has compressions and rarefactions.
|Know where the Compressions are,what wave they are in, and be able to define what it is.||The compressions are when the waves are really close together and they are in a longitudinal wave, and they are where the particles are the closest together.|
|Know where rarefactions are, what wave they are in, and be able to define what they are.||A rarefaction is where the waves are further spread apart and they are in a longitudinal wave, When the particles are more spread out.|
|Define and know what a Transverse wave looks like.||When particles move perpendicularly to the direction the wave travels. It looks like waves going up and down.|
|Waves that require a medium…
Give examples of what that require a medium.
music waves,water waves, a towel waving in display.
|Define Electromagnetic waves and give examples.||They are vibrations of electric and magnetic fields, do not require a medium.
visible light, radio waves, microwaves,x-rays, UV light
|Define amplitude.||A measure of how far particles in the medium move from their rest position.|
|The distance from any point on a wave to the next identical point…||Wavelength|
|Define frequency||The number of waves that pass a point in a given amount of time, usually one second.|
|Frequency is measured in…?||Hertz, one hertz is is equal to one wavelength per second.|
|Define wave speed||The speed that waves travel. This depends on the properties of a medium.|
|The ability to use force to move an object….?||Power|
|Formula for Work?||W=FxD
The runner moved a distance of 5 miles and he had a 25 pound box he had to carry.
|Formula for power?||P=work divided by time|
|Solve for power.
If a man moves a large box that weighs 20Newtons 15 meters in 45 seconds how much power was used?
|step 1: W=FxD Step 2: P=work divided by time
W=20×15 P= 300/45
W=300j ( P=6.7watts) <— answer
|How much time is needed to produce 800 Joules of work if 60 watts of power is used?||T=work divided by power
(T= 13.3 seconds)<—Answer
|calculate wave length…
7m= 14m/s Divided by F
|For a wave to be longitudinal it has to have______ and _______||compressions and rarefactions|
|A wave with a lot of waves is high or low amplitude||high amplitude|
|A wave with low heights is a high or low amplitude?||Low amplitude|
|We measure the wave length of a transverse wave from ____ to ____ or ______ to ____||crest to crest or trough to trough|
|We measure wave length in a longitudinal wave from _____ to ____ or ______ to _____||compression to compression or rarefaction to rarefaction|