Physics 2 WAVES ppt. by Robin D. Seamon (Heat & Temperature Energy Waves)
<ul><li>temperature:   average kinetic Energy of particles in an object </li></ul>Solid Liquid Gas http://www.bcssa.org/ne...
<ul><li>Thermometer :  thin glass tube filled with mercury or alcohol </li></ul><ul><li>Thermal expansion:   temp goes up,...
Thermostat:
<ul><li>Conduit:   conducts/ allows Energy transfer;  water, metal </li></ul><ul><li>Insulator:   does not allow Energy tr...
Put ‘C’ for Conductor & ‘I’ for Insulator. Curling iron oven mitt ceramic bowl iron skillet stove coil cookie sheet plasti...
<ul><li>Conduction  transfer of thermal energy through direct contact  </li></ul><ul><li>Convection   transfer of thermal ...
Which changes temperature faster:  --air, water? Can’t measure transferred E directly; must be calculated: Heat (J) = spec...
LAB:  Feel the Heat <ul><li>Procedure : </li></ul><ul><li>Bundle the nails together with a rubber band.  Record the mass. ...
WAVES SCIENCE SONGS
<ul><li>Wave:   disturbance than transmits Energy through matter or empty space; </li></ul><ul><li>--as wave travels it do...
Compression  waves pressed close together  Rarefraction  waves stretched farther apart Example:  sound wave
Rarefraction Transverse Wave Longitudinal Wave
 
 
Waves: Transverse wave-    particles move up & down, perpendicular to direction wave is going Longitudinal wave-   particl...
Transverse wave-   particles move up & down, perpendicular to direction wave is going BACK
Longitudinal wave-  particle move horizontally along the wave in the direction the wave is moving BACK
Surface Waves HSW:  Waves of Destruction Surface Waves (3 min) BACK
 
<ul><li>Properties of Waves </li></ul><ul><li>Amplitude:   maximum distance the particles vibrate </li></ul><ul><li>Wavele...
Wave Interactions reflection -  wave bounces back after hitting a barrier; examples:  light reflected lets us see it sound...
Diffraction  bending of waves around a barrier Interference  two or move waves overlap - constructive interference  2 wave...
 
 
Standing waves:   pattern looks like wave is standing still Resonance:  two objects naturally vibrate at the same frequenc...
 
LAB: Musical Instruments
SCIENCE SONGS
<ul><li>HSW:  Exploring Sound (23 min)   not saved </li></ul><ul><li>HSW:  Exploring Light ( 3 min)  not saved </li></ul><...
Upcoming SlideShare
Loading in …5
×

Physics 2 notes: WAVES ONLY- Notes on the difference between longitudinal, transverse, & electromagnetic waves with illustrations, LABS, and video links

17,618 views

Published on

Notes on the difference between longitudinal, transverse, & electromagnetic waves with illustrations, LABS, and video links

Published in: Education, Technology
  • Be the first to comment

Physics 2 notes: WAVES ONLY- Notes on the difference between longitudinal, transverse, & electromagnetic waves with illustrations, LABS, and video links

  1. 1. Physics 2 WAVES ppt. by Robin D. Seamon (Heat & Temperature Energy Waves)
  2. 2. <ul><li>temperature: average kinetic Energy of particles in an object </li></ul>Solid Liquid Gas http://www.bcssa.org/newsroom/scholarships/great8sci/Matter/Choose_Matter.html The more kinetic E the higher the temp. Interactive LAB
  3. 3. <ul><li>Thermometer : thin glass tube filled with mercury or alcohol </li></ul><ul><li>Thermal expansion: temp goes up, volume goes up b/c particles spread out </li></ul><ul><li>examples: thermometer, hwy joints, bimetallic strips in thermostats </li></ul>Kelvin 0 = when all molecular motion stops 32 °F 0 °C 273 °K 98.6 °F 37 °C 310 °K 212 °F 100 °C 373 °K Farenheit Celcius Kelvin
  4. 4. Thermostat:
  5. 5. <ul><li>Conduit: conducts/ allows Energy transfer; water, metal </li></ul><ul><li>Insulator: does not allow Energy transfer; fiberglass, cardboard, air, cork, wood, rubber, wood </li></ul><ul><li>Heat: Energy transferred between objects at different temperatures; thermal Energy If two objects are connected, there is always transfer between high temp to low temp </li></ul><ul><li>Thermal equilibrium Energy transfer until the same temperature on both </li></ul>
  6. 6. Put ‘C’ for Conductor & ‘I’ for Insulator. Curling iron oven mitt ceramic bowl iron skillet stove coil cookie sheet plastic spatula fiberglass insulation copper pipe
  7. 7. <ul><li>Conduction transfer of thermal energy through direct contact </li></ul><ul><li>Convection transfer of thermal energy by movement of liquid/gas (hot up, cold down) </li></ul><ul><li>Radiation transfer of thermal energy by electromagnetic waves (visible light & ultraviolet waves) </li></ul>
  8. 8. Which changes temperature faster: --air, water? Can’t measure transferred E directly; must be calculated: Heat (J) = specific heat x mass x change in temp
  9. 9. LAB: Feel the Heat <ul><li>Procedure : </li></ul><ul><li>Bundle the nails together with a rubber band. Record the mass. Tie string around, leaving one end 15 cm long. </li></ul><ul><li>Put bundle of nails into a cup, letting string dangle out. Fill the cup with hot water, covering nails. Set aside 5 min. </li></ul><ul><li>Use graduated cylinder to measure enough cold water to exactly the mass of nails. Record. </li></ul><ul><li>Measure & record the temp of the hot water with the nails & temp of cold water. </li></ul><ul><li>Use string to transfer the bundle of nails to the cup of cold water. Use the thermometer to monitor the temperature of water-nail mixture. When the temp stops changing record this final temp. </li></ul><ul><li>Empty cups, dry nails. Repeat for trial 2, but switch the hot & cold water. Record data. </li></ul><ul><li>Conclusion: </li></ul><ul><li>The cold water in Trial 1 gained energy. Where did the E come from? How does the E gained by the nails in Trial 2 compare with the E lost by the hot water in Trial 2? Which material seems to be able to hold E better… iron or water? </li></ul>p. 430 Materials : balance, 2 cups, cylinder, 10 nails, string, rubber band, thermometer, hot water, cold water 2 1 Final temp of water and nails combined Initial temp of water to which nails will be transferred Initial temp. of water & nails Volume of water that equals mass of nails (mL) Mass of nails (g) Trial
  10. 10. WAVES SCIENCE SONGS
  11. 11. <ul><li>Wave: disturbance than transmits Energy through matter or empty space; </li></ul><ul><li>--as wave travels it does work on everything in its path </li></ul><ul><li>Mechanical waves : need a medium examples- sound wave, ocean wave </li></ul><ul><li>Some waves don’t need a medium examples- visible light, microwaves, tv, radio signals, x-rays </li></ul>
  12. 12. Compression waves pressed close together Rarefraction waves stretched farther apart Example: sound wave
  13. 13. Rarefraction Transverse Wave Longitudinal Wave
  14. 16. Waves: Transverse wave- particles move up & down, perpendicular to direction wave is going Longitudinal wave- particle move horizontally along the wave in the direction the wave is moving Surface wave - combination of transverse & longitudinal wave VIDEO: HSW Wavelength Basics ADVANCE
  15. 17. Transverse wave- particles move up & down, perpendicular to direction wave is going BACK
  16. 18. Longitudinal wave- particle move horizontally along the wave in the direction the wave is moving BACK
  17. 19. Surface Waves HSW: Waves of Destruction Surface Waves (3 min) BACK
  18. 21. <ul><li>Properties of Waves </li></ul><ul><li>Amplitude: maximum distance the particles vibrate </li></ul><ul><li>Wavelength: distance between two crests or compressions in a wave </li></ul><ul><li>Frequency: number of waves in a given amount of time </li></ul><ul><li>Wave speed: speed at which wave travels (v) </li></ul>
  19. 22. Wave Interactions reflection - wave bounces back after hitting a barrier; examples: light reflected lets us see it sound echoes refraction - bending of a wave as it passes from one medium to another at an angle (because wave changes speed in a different medium) example: light through a prism (light is dispersed into separate colors) HSW: Exploring sound, Reverberation (3 min)
  20. 23. Diffraction bending of waves around a barrier Interference two or move waves overlap - constructive interference 2 waves overlap crests & troughs, combining both waves’ energy… makes it stronger! -destructive interference 2 waves overlap one crest on one trough, cancels out each other’s Energy HSW: Assignment Discovery: Sound/Interference (1 ½ min) Ripple Tank Simulation
  21. 26. Standing waves: pattern looks like wave is standing still Resonance: two objects naturally vibrate at the same frequency; sound of one causes the other to vibrate VIDEO: Sound/Resonance-Shattering glass (15 min) United Streaming
  22. 28. LAB: Musical Instruments
  23. 29. SCIENCE SONGS
  24. 30. <ul><li>HSW: Exploring Sound (23 min) not saved </li></ul><ul><li>HSW: Exploring Light ( 3 min) not saved </li></ul><ul><li>Physical Science: Light ( 20 min) </li></ul><ul><li>Physical Science: Sound ( 20 min) </li></ul>

×