An Introduction To Wave Phenomena Horizonsd Ca-Books Pdf

AN INTRODUCTION TO WAVE PHENOMENA horizonsd ca
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Unit Physics B Intro to Waves, 4 Prior to the lab have students complete the vocabulary list for Activity 2 Using a Slinky. to Investigate Waves Student Handout, 5 In a large open area have students complete the lab filling in their answers to questions. along the way Their lab handout may be submitted for grading. 6 After reviewing the sample question with them students should work through Activity 3. Getting into Interference Student Handout Individual Review the solutions on the. GROUP FORMAT, 1 Preview the unit by having students fill in the unit organizer as you go through it with them. 2 Have students complete their Activity 1 Catching the Concept of Waves Vocabulary. Student Handout sheet by using their student handout notes and or other textbooks or. resources available, 3 Brainstorm everyday examples of waves with students Use the Activity 1 Catching the. Concept of Waves Teacher Support Material and have students use the Activity 1. Catching the Concepts of Waves Student Handout Group as a note taking guide. 4 Use the suggested demonstrations animations and key questions to introduce types of waves. and wave behavior, 5 Have students complete Activity 1 Review Did you Catch the Concept of Waves.
Student Handout question sheet, 6 Have students complete the vocabulary at the start of the Activity 2 Using a Slinky to. Investigate Waves Student Handout by using the information in their handout and or other. textbooks or resources available, 7 In a large open area of the school or hallway have students complete their Slinky lab. investigation and submit completed lab handout, 8 Go through example of how to graph the interference of pulses using Activity 3 Getting. Interference Teacher Handout Students should use the Activity 3 Getting Into. Interference Student Handout Group and complete the rest of the questions individually. Assessment and Evaluation, Assessment of students understanding of basic wave concepts through answers to questions. Student grade on lab, Assessment of students understanding of wave interference through questioning.
Science 21 Phys B Waves P13,Unit Physics B Intro to Waves. ACTIVITY OVERVIEW,Suggested Sequencing,Activity Suggested Description Assignment. 1 1 5 hours As a class or individually preview unit Review Did you. using unit overview Catch the Concept of,Have students complete vocabulary list for. the activity,Brainstorm everyday examples of waves. Using a series of demonstrations,animations and key questions introduce the.
types of waves and basic wave behavior, 2 1 5 hours Have students complete the vocabulary list Slinky Lab Handout. for the lab SH,Facilitate the completion of the Using a. Slinky to Investigate Waves Lab, 3 1 hour Work through the sample problem on the Getting Into. interference of pulses in the Getting Into Interference SH. Interference handout,Facilitate the completion of worksheet. problems on the interference of pulses,Review the solutions on the overhead.
Science 21 Phys B Waves P14,Unit Physics B Intro to Waves Teacher. AN INTRODUCTION TO WAVE PHENOMENA,Activity 1 Catching the Concept of Waves. Everyday examples of waves, Water waves waves in a rope or string waves in a slinky vibrations in a piece of steel e g. train tracks earthquake waves sound waves produced by a musical instrument light waves. more challenging to grasp at this point microwaves X rays radio waves the back and forth. motion of a pendulum waving one s hand back and forth. What is a wave, A vibration or disturbance that moves through a substance a medium or through empty space. There are two types of waves, Electromagnetic waves can travel through empty space e g light waves X rays radio waves.
microwaves, Animation http www jb man ac uk distance strobel light lighta htm. Mechanical waves need a substance or medium to pass through e g sound waves waves. through a rope water waves, Demonstration Put a cell phone in a bell chamber Dial the cell phone number and have it ring. before evacuating the air Everyone will be able to hear the ringing of the mechanical sound. wave Pump the air out of the chamber and dial the cell phone again Leave a message on the. phone The ringing of the mechanical sound wave cannot be heard since there is no air in the. chamber for it to travel through Before removing the phone ask students if they think that the. message got to the phone e g could the radio waves carrying the message reach the phone. Have a student listen to the message on the phone Review the difference between mechanical. and electromagnetic waves, KEY Q Why does sunlight reach us here on Earth while the sound of nuclear reactions. happening on the sun does not,Science 21 Phys B Waves P15. Unit Physics B Intro to Waves Teacher, a Transverse waves are mechanical waves in which the particles of the substance carrying the 3.
wave vibrate up and down while the wave moves to the right or left e g waves on a rope or. spring The high points of the wave are called crests while the low points are called troughs. For each of the following demonstrations and animations have students explain how each is an. example of a transverse wave, Demonstration Have students do the wave Starting sitting down have students stand up as. you run past them in the classroom, Demonstration Have two students hold the ends of a slinky stretched out on the floor Have. one student move his her hand from right to left,Animation transverse wave motion. http www kettering edu drussell Demos waves wavemotion html. b Longitudinal waves are mechanical waves in which the particles of the substance carrying. the wave vibrate right to left and the wave moves right to left Example sound waves the. parts of the wave where the particles of the substance are close together are called. compressions and the parts where the particles are far apart are called rarefactions. compression rarefaction, For each of the following demonstrations and animations have students explain how each is an. example of a longitudinal wave, Demonstration Have students do the new age wave Have all students stand up in a line.
shoulder to shoulder facing the front As you run past them have each student bump the student. beside them in the shoulder,Science 21 Phys B Waves P16. Unit Physics B Intro to Waves Teacher, Demonstration Have two students hold the ends of a slinky stretched out on the floor Have. one student quickly push the slinky along its length and return to the starting position. Animation longitudinal waves, http www kettering edu drussell Demos waves wavemotion html. c Surface waves are mechanical waves in which the particles of the substance carrying the. wave move in circles while the wave moves right to left e g water waves. For each of the following demonstrations and animations have students explain how each is an. example of a surface wave, Demonstration Fill a large bowl or tank with water Float a rubber duckie or other toy in the. water and have a student make water waves by repeatedly tapping the surface of the water Note. that the wave travels through the water from right to left while the toy bobs up and down with. some side to side motion,Animations surface waves, http www kettering edu drussell Demos waves wavemotion html.
http www classzone com books earth science terc content visualizations es1604 es1604page01. cfm chapter no visualization,Behaviour of Waves, KEY Q Think back to when you were part of the wave transverse wave and the new age. wave longitudinal wave You were a particle of the substance through which the wave. traveled Did you change your location in the room from the start of generating the wave to your. final position once the wave had passed No, Waves transfer energy from one location to another but they cannot transfer matter. KEY Q Think about the last time you watched a live interview on TV when the interviewer. was in a different location than the interviewee There is often a delay between the interviewer. asking the question and the interviewee responding Can you think of why there might be a. Different kinds of waves travel at different speeds Examples electromagnetic waves such as. visible light travel at 300 000 km s mechanical waves such as sound waves travel at 0 343. km s at room temperature through air,Science 21 Phys B Waves P17. Unit Physics B Intro to Waves Teacher, Demonstration Acquire a starting pistol used in track meets Bring the students outdoors to an 4. open area Have the students stand about 100 m or a significant distance from you Tell the. students to watch the starting pistol and listen carefully to what they hear Fire the pistol The. students should note that they see the smoke before they hear the starting pistol Discuss this in. terms of speed of light vs speed of sound Other examples seeing lightning then hearing the. thunder seeing the bat strike the ball then hearing the crack. Demonstration Acquire a tin can telephone two cans connected by butcher cord or yarn. about 20 ft long Have one student hold each and move apart until the string between them is. taut First without using the can apparatus have one student whisper very quietly to the other. Then have the same student whisper at approximately the same volume to the other student but. this time with the tin can up to his her mouth The second student should have the tin can up to. his her ear The second student should hear a significant difference in volume Discuss this. difference, The medium material that a mechanical wave such as a sound wave travels through affects its.
speed Example sound travels faster through rope than it does through air since rope is more. dense Putting one s ear to the track to hear the train not recommended rather than listening. for the sound of the train in the air,Science 21 Phys B Waves P18. Unit Physics B Intro to Waves Teacher, Activity 1 Review Did You Catch the Concept of Waves 5. Teacher Key, The correct answer is underlined for multiple choice questions. 1 A transverse wave is transporting energy from left to right The particles of the medium will. a only upward or downward,b both upward and downward. c only left or right,d both left and right, 2 Which of the following is NOT a characteristic of mechanical waves.
a They consist of disturbances in a substance or medium. b They transport energy, c They travel in a direction which is perpendicular or at right angles to the direction in. which the particles of the medium travel e g the wave might travel to the right while. the particles of the medium move up and down,d They are created by a vibrating source. Note to teacher Although transverse waves do this longitudinal another type of. mechanical wave do not, 3 In a space movie the inhabitants of one spaceship hear another spaceship zooming by. Think about the characteristics of sound waves a type of mechanical wave Why would this. situation be impossible, ANSWER Sound waves are mechanical waves and therefore need a medium to travel. through Space is essentially a vacuum therefore sound could not travel through it. 4 Which of the following is NOT an example of an electromagnetic wave. a X ray b water wave c gamma ray d visible light e radio wave. 5 Think again about the difference between mechanical and electromagnetic waves Explain. why we can see the sun but we cannot hear the sound of nuclear reactions happening on it. ANSWER We can see the sun because light is an electromagnetic wave and therefore can. travel through the vacuum of space We cannot hear the nuclear reactions because sound is a. mechanical wave and cannot travel through the vacuum of space Like all mechanical waves. it needs a medium to travel through, 6 Explain why one often hears the thunder after seeing the lightning why is there a delay.
between the two events, ANSWER Sound is a mechanical wave Light is an electromagnetic wave Sound travels. MUCH slower than light e g sound travels 343 m s at room temperature light travels at. 3 00 x 108 m s You therefore see the lightning before hearing the thunder. Science 21 Phys B Waves P19,Unit Physics B Intro to Waves Teacher. 7 Water waves a type of surface wave are often described as being a combination of a 6. transverse and a longitudinal wave Why is this so, ANSWER The particles of the medium travel in circles If one considers a wave traveling. from left to right the particles movement is then an approximate combination of the up and. down motion of the particles of a transverse wave and the side to side motion of the particles. of a longitudinal wave, 8 You send a vibration through three different materials a piece of foam a steel rod and a. piece of wood In which material do you think that the wave vibration will travel the fastest. Explain your answer HINT How do you hear a train coming the quickest by listening. through the air or by putting your ear on the track. ANSWER A steel rod It is the most dense so the energy transfer is the quickest. 9 The wave often done in football stadiums is an example of a n wave. a electromagnetic b transverse c longitudinal, 10 Complete the following concept map by putting the correct terms from the list below into the.
empty circles or blanks,electromagnetic,e g water waves. e g light waves,mechanical,transverse longitudinal. e g the wave at a football game e g sound waves, Words To Use water waves sound waves mechanical waves transverse waves light waves. Science 21 Phys B Waves P20,Unit Physics B Intro to Waves Teacher. Activity 3 Getting Into Interference 7, KEY Q Ask students if they have ever been to a concert or musical event in a hall where there.
was bad acoustics What did this sound like What do waves do that could have been causing. this to happen, KEY Q Who has seen the large headphones that airport workers out on the tarmac or those. operating large machinery wear Do they just cover one s ears or is there more to them. Contain small microphones that collect incoming sound waves Circuitry inside the. headphones process this noise and reproduce the noise in a form exactly out of phase with the. original This out of phase version is played back to the person wearing the headphones. Due to destructive interference a quieter background is the result. Demonstration Access the following website to set up a demonstration of constructive and. destructive interference of sound waves Have students walk by the speakers to observe loud and. quiet spots You will need two speakers http www falstad com interference. To better understand interference we can examine what happens to two pulses when they. meet and how constructive or destructive interference occurs. The drawing below shows a string on which two rectangular pulses are traveling in opposite. directions at a constant speed of 1 cm s,Teacher Key With Solutions. Note When parts of the original pulses disappear due to interference their original locations. are sometimes indicated by dotted lines It is not necessary for students to include these. Science 21 Phys B Waves P21,Unit Physics B Intro to Waves Teacher. SAMPLE QUESTION to be done with students 13,Science 21 Phys B Waves P22. Unit Physics B Intro to Waves Teacher,Science 21 Phys B Waves P23.
Unit Physics B Intro to Waves Teacher,Science 21 Phys B Waves P24. Unit Physics B Intro to Waves Teacher,Science 21 Phys B Waves P25. Unit Physics B Intro to Waves Teacher,Science 21 Phys B Waves P26.

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