A B C DO NOW TUESDAY Give your own definition of a wave Learning Targets 11a Define mechanical wave 12a Define electromagnetic wave 13a Identify an electromagnetic ID: 810055
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Slide1
Waves
Slide2DO NOW MONDAY
Tell the type of heat transfer happening at each letter.
A
B
C
Slide3DO NOW TUESDAY
Give your own definition of a wave.
Slide4Learning Targets
1.1a Define mechanical wave.
1.2a Define electromagnetic wave
.
1.3a Identify an electromagnetic wave.
1.4a Identify a mechanical wave. 1.5a Differentiate between mechanical and electromagnetic waves.
Slide5Etch-A-Sketch
Use pages 14-17 in the textbook to complete the handout.
Write the big ideas/important details on the right and then draw a picture to help you understand the word on the left.
If you work
alone quietly and very hard for the first 20 minutes, then you may work with the person at the table with you for the last 20 minutes, provided that you get your work completed TODAY.
Any work not completed today is HOMEWORK.
Slide6DO NOW WEDNESDAY
Answer the two questions on the sheet given to you.
1
2
Slide7Learning Targets
1.1a Define mechanical wave.
1.2a Define electromagnetic wave
.
1.3a Identify an electromagnetic wave.
1.4a Identify a mechanical wave. 1.5a Differentiate between mechanical and electromagnetic waves.
Slide8Slide9What’s a wave?
Wave
: a rhythmic disturbance that transfers energy through matter or space
Two general types of waves:Mechanical waves
Electromagnetic waves
Slide10Mechanical Waves
Require matter to travel through
The matter the mechanical wave travels through is called a
MEDIUM
Examples of a medium that a mechanical wave can travel through: sound waves, earthquake waves, water waves
Can be transverse or longitudinal
Longitudinal Wave
Transverse Wave
Slide11Mechanical Waves
Two types of mechanical waves:
Transverse
: matter moves in the medium at
right angles to the direction that the wave is travellingExamples: water
waves, S-type earthquake wavesLongitudinal: vibration is parallel to the direction of motion of the wave; back and forth motion; also called compressional waves
Examples: sound waves, P-type earthquake waves
Slide12Transverse Waves
Crest: highest point of a transverse wave
Trough: lowest point of a transverse wave
Amplitude: the amount of energy carried by a wave; corresponds to the height of a transverse wave
Wavelength: the distance between two identical points on a wave
Slide13Longitudinal/Compressional Waves
Rarefaction: expanded portion of the wave; particles are spread apart
Compression: compressed (squeezed) portion of the wave; particles are pushed together
Wavelength: the distance between two identical points on a wave
Amplitude: the amount of energy carried by a wave; corresponds to the amount of compression in a longitudinal wave
Slide14DO NOW FRIDAY
Answer the two analyzing data
multiple choice questions
on the sheet that was given to you.
Slide15DO NOW MONDAY
Identify the parts of the transverse wave labeled with letters below.
A
B
C
D
Slide16Learning Targets
1.2b Identify the different parts of a wave.
1.3b Explain the strength of the wave by analyzing amplitude and wavelength.
1.4b Explain the relationship between the frequency and the type of wave.
Slide17Amplitude- amount of energy carried by a wave
Low Amplitude
Medium Amplitude
High Amplitude
Slide18Wavelength- distance between two identical points on a wave
Short Wavelength
Long Wavelength
Slide19Frequency- the number of waves that pass a given point in 1 second
Low Frequency
High Frequency
Slide20Relationship between amplitude, wavelength, frequency, and energy
HIGH AMPLITUDE = HIGH ENERGY
LOW AMPLITUDE = LOW ENERGY
LONG WAVELENGTH = LOW FREQUENCY = LOW ENERGY
SHORT WAVELENGTH = HIGH FREQUENCY = HIGH ENERGY
Slide21DO NOW TUESDAY
Use the following terms to answer the numbers below.
Medium Transverse Longitudinal Energy
Compression Rarefaction
Waves transfer this.
Waves in which the matter moves at right angles to the direction of the wave .
The matter a moves through.Waves in which the matter moves parallel to the direction of the wave.
Expanded portion of a longitudinal wave.
Squeezed together portion of a longitudinal wave.
Slide22Quiz
Expectations
QUIET
Do your best.
(Eyes on own paper.)
Finished? (Turn your scantron
over and write a note or draw a picture for Mrs. Dyer on the back.)
Slide23Learning Targets
1.3b Explain the strength of the wave by analyzing amplitude and wavelength.
1.4b Explain the relationship between the frequency and the type of wave.
Slide24Wave Equation
The speed of a wave is equal to its frequency times its wavelength.
The equation is:
Speed = frequency x
wavelengthUse the triangle below to solve for the speed, frequency, or wavelength of a wave.
v
λ
f
Slide25Wave Equation
Example:
A tuning fork has a frequency of 310 Hz. The wavelength of the sound produced by the tuning fork is 1.32 m. Calculate the speed of the wave.
SOLUTION
:
Given: Formula to solve for missing part:
= Setup/Solution
:
f
=
v
=
Slide26Wave Equation
Guided Practice
What is the speed of a wave with a frequency of 760 Hz and a wavelength of .45 m?
Given:
Formula
: Setup/Solution:
Slide27Wave Equation
Guided Practice
What is the frequency of a wave that is moving at 30 m/s with a wavelength of .35 m?
Given
:
Formula:
Setup/Solution:
Slide28Wave Equation
Guided Practice
What is the wavelength of a wave moving at 340 m/s with a frequency of 256 Hz
?
Given
: Formula: Setup
/Solution:
Slide29DO NOW WEDNESDAY
Answer the two multiple choice questions on the paper given to you.
Slide30Learning Targets
1.5a Differentiate between mechanical and electromagnetic waves.
Slide31Electromagnetic Spectrum
You will work with your group to create a poster/visual of the electromagnetic spectrum.
Be sure to follow the scoring guide given to you.
You will only have today to work on this.
Slide32DO NOW THURSDAY
Calculate the frequency of a wave that is moving at 35 m/s with a wavelength of .45 m.
v
λ
f
Slide33Learning Targets
1.2b Identify the different parts of a wave.
1.3b Explain the strength of the wave by analyzing amplitude and wavelength.
1.4b Explain the relationship between the frequency and the type of wave.
1.5b Compare and contrast a transverse and a longitudinal wave.
Slide34DO NOW FRIDAY
Answer the two multiple choice questions on the paper given to you.
Slide35Learning Targets
1.5a Differentiate between mechanical and electromagnetic waves.
1.3b Explain the strength of the wave by analyzing amplitude and wavelength.
1.4b Explain the relationship between the frequency and the type of wave.
Slide36Electromagnetic Waves
Do not require a medium through which to travel (means they can travel through a vacuum such as space)
Examples: radio waves, microwaves, infrared waves (heat), light waves, UV rays, X-rays, gamma rays
Are transverse
waves
Slide37All electromagnetic waves travel at the same
speed.
Their speed is the speed of light = 300,000,000 m/s
That’s 186,000 miles/second!!!!!!
Slide38Slide39EXIT SLIP WEDNESDAY
Complete the T chart that you were given to differentiate between mechanical and electromagnetic waves.
Mechanical Waves
Electromagnetic Waves
Slide40Learning Targets
1.1a Define mechanical wave.
1.2a Define electromagnetic wave.
1.3a Identify an electromagnetic wave.
1.4a Identify a mechanical wave. 1.5a Differentiate between mechanical and electromagnetic waves.
Slide41DO NOW THURSDAY
Each table will be assigned a word from the Etch-A-Sketch Sheet.
You will write the word, the definition/important details about the word on the right side of your page and Sketch a good picture to help you remember it on the left side of the page.
You will have 3 minutes to do this.
You will post your page on the wall.
Everyone in the class will do a gallery walk around the room and complete their Etch-A-Sketch WS, then turn in. You will have 7 minutes to do this.
Slide42Instructions for THURSDAY
If you made
Mastery
on your Exam, you will do an enrichment activity on the
ChromeBooks, If you would like to redo questions that you missed on the exam, you may do so for half credit.If you made
Progressing, you will be given a redo sheet with the questions you missed and your incorrect answer. You will choose a new answer and explain why it is the correct answer. You may use your notes for this. You will receive half credit for every question you get correct.If you made Needs Improvement, you will receive additional instruction from me and will redo the questions you missed on the exam.