Cover Sheet-Block 6 Wave Properties Name Standards-Physics 4 a b c d 4a. Students know waves carry energy from one place to another. 4. b. Students know how to identify transverse and longitudinal waves in mechanical media, such as springs and ropes, and on the earth (seismic waves). 4. c. Students know how to solve problems involving wavelength, frequency, and wave speed. 4. d. Students know sound is a longitudinal wave whose speed depends on the properties of the medium in which it propagates. Objective Waves What are waves? Waves carry energy / information from one place to another using oscillation Wave Properties- Identify theses oscillations using terms like wavelength, amplitude, frequency, propagation direction and speed. Identify transverse and longitudinal waves in mechanical media, such as springs and ropes, and on the earth (seismic waves). Wave Behavior- Understand wave motion in a material and in a vacuum. Describe constructive and destructive interference of more than 1 wave and /or a material. Sound is a longitudinal wave whose speed depends on the properties of the medium in which it propagates. 1. Coversheet 2. WCW 3. Vocab- pg 183-196 words 4. HW pg. 190-193 Physics to go # 2-6 5. Notes-Wave Properties 6. Problems on wave properties(back of 5 okay)
Warm-up: 1 Sketch and Describe Page #2 WCW Name Breaking the speed of sound Longitudinal Wave Parallel Surfing Wave Transverse Wav Perpendicular Wrap-up 1 Explain the relationship between Wavelength, speed and frequency. (the eq. you wrote down) Warm-up 2 Sketch and Answer How is a roller coaster an example of wave motion? Critical thinking 2 Explain the phrase, Two waves constructively interfere. Wrap-up Draw Longitudinal or Compression Wave
Name Page #3 Vocabulary 19 total Pg. 183-190 11 words 1) Transverse pulse or wave: motion of medium perpendicular to motion 2) Amplitude: the height of a wave crest, it s the energy amount 3) ic wave: a repetitive pulses, ocean wave s 4) Standing wave: wave moves between two points, jump-rope 5) Crest: the highest point of a wave 6) Wavelength: the distance between consecutive points of a wave Crest to crest 7) Frequency: the number of waves produced per unit of time, reciprocal of the 8) Compression pulse or wave: longitudinal, caused by compression and expansion. Sound 9) Longitudinal pulse or wave: the motion of the medium is parallel to the wave motion. Traffic 10) Trough: the lowest point of a wave 11) Node: a spot on a standing wave where the medium is motionless Pg. 196 1 word 12) Pitch: the quality of a sound dependent primarily on the frequency of the sound waves produced by the source Some other Vocabulary from Standards 13) Vacuum no air 14) Light waves electromagnetic spectrum 15) Sound waves Need medium (material) to travel 16) Wave propagating movement of wave through material 17) Expansion (rarefaction) spreading of material during wave 18) Acoustic waves sound wave from vibration in a hole 19) Wave speed equal to frequency times wavelength
Page 4 Hw pg. 190-193 Physics to go # 2-6 Name
Page 5 Notes Each Line Answers a Test Question Name 1) A wave is a repeating disturbance that transfers energy through matter or open space. 2) Waves that use matter to transfer energy are called mechanical waves. 3) Light waves travel in both a vacuum and a medium 4) The matter through which a mechanical wave travels is called a medium 5) In transverse waves, matter in the medium moves back and forth at right angles to the direction the wave travels. 6) In Longitudinal or compressional waves, matter in the medium moves forward and backward in the same direction the wave travels. 7) Sound waves are compressional waves. 8) Sound waves cannot travel in outer space because they are mechanical waves they travel through a medium 9) What is the region of a compressional wave where particles are far apart called? rarefaction 10) What type of wave does not require matter to carry energy? Transverse 11) Amplitude is a measure of the energy in a wave. 12) A transverse wave has amplitude 13) The Wavelength is the distance from the top of one crest of a transverse wave to the top of the next crest in that wave. 14) The frequency of a wave is how many wavelengths pass a fixed point each second
Page 6 Problems Wave Properties Name 1. Right next to each picture, which wave above is a transverse wave? A longitudinal wave? 2. On the transverse wave, label a crest and a trough. On the longitudinal wave, label a compression and a rarefaction. 3. If the above wave completes about 6 cycles in 2 seconds, what is this wave s frequency? 4. What is the period of a wave? 5. If the above wave completes about 6 cycles in 2 seconds, what is this wave s period? 6. What is the relationship between the period of a wave and it s frequency?