Post on 23-Dec-2015
transcript
Daily Work Organizer
Friday Question of the Day: What do waves transfer? How do you identify transverse and longitudinal waves?
Do Now:
1.What are things that travel by wave?2.What do waves have to do with energy?
Agenda: Homework
Homework:Reading Log 14: pg 122-124Test Corrections & Survey Finish worksheets
Homework:Reading Log 14: pg 122-124Test Corrections & Survey Finish worksheets
Jobs•PowerPoint Master •2 Fantastic Student to handback Homework
•Whiteboard eraser!
Waves
Why do we care?
Waves are all around us all the time, even if we can’t see them.
Waves not only explain surfing, but they also explain earthquakes, sound, and one of the most mysterious phenomena on Earth-light
What do Waves Do?
Move energy through matter or space
Two Types of Waves
Mechanical Waves need matter (medium) to travel through
Electromagnetic Waves can travel through empty space
Mechanical Waves
water
air
solids
Mechanical waves travel through mediums such as:
Mechanical Waves
•May be longitudinal
•Or transverse
Types of Mechanical WavesTransverse Waves – energy
moves up and down or side to side while traveling forward
AmplitudeWavelength
Trough
Crest
How often = Frequency
Types of Mechanical Waves
Longitudinal/Compression Waves – energy moves along the medium while traveling forward
WavelengthHow often = Frequency
Types of Waves: http://www.youtube.com/watch?v=
Rbuhdo0AZDU
http://www.youtube.com/watch?v=
Rbuhdo0AZDU
Mechanical WavesTransverse Longitudinal
•Has wavelength, frequency, and amplitude
•Energy travels forward but moves up and down/side to side
•Has wavelength and frequency
•Energy travels forward in pulses
Put the following waves under the correct category:•A wave at a ball game•Guitar string•Slinky•Flag waving in the wind•Sound wave•Shaking a rope•Water wave
II. Mechanical WavesLongitudinal Transverse
•Slinky•Sound wave•Water wave
•A wave at a ball game
•Guitar string•Flag waving in the wind
•Shaking a rope•Water wave
Electromagnetic Waves – Light!
3 m 2
2 m 3 mv = f λ v =1.5 m/s
GUESS FORMULA:
G = Givens - write them all down with symbols, numbers and units
U = Unknown - write down the unknown with a question mark
E = Equation - write down the equation or equations that apply in the problem solve the equation(s) for the desired unknown
S = Substitute - substitute the given information into the solved equation
S = Solve - solve numerically, paying attention to units identify the final answer by circling, boxing, or underlining it clearly check the final answer to be sure it makes sense