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A transverse wave…..

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A transverse wave…..

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  1. We are learning to: demonstrate how waves transfer energy.We are looking for: a disturbance or variation that transfers energy from one point to another point in a medium. Transverse waves- wave and medium move in direction that is perpendicular to each other Longitudinal waves- wave and medium move in same direction

  2. A transverse wave….. • Vibrates particles perpendicular to the direction of wave • Vibrates particles parallel to the direction of the wave • Vibrates both parallel and perpendicular to the direction of the wave • Vibrates particles in one direction • Help! I don’t understand.

  3. What type of wave is represented by picture? • Transverse • Longitudinal • Surface • Seismic • Help! I don’t understand.

  4. A wave is a disturbance that transfers • matter. • particles. • energy. • a medium. • Help! I don’t understand.

  5. What do you call the material that a wave travels through? • Plasma • Space • Vacuum • Medium • Help! I don’t understand.

  6. What type of wave is represented by the animation? • Longitudinal • Transverse • Surface • Seismic • Help! I don’t understand.

  7. We are learning to: describe the properties of waves.We are looking for: Wavelength-distance from crest to crest (transverse wave), or from compression to compression (longitudinal wave)Frequency-number of waves that pass a given point each secondAmplitude-distance from rest position to the crest (transverse wave); measures how compressed the particles of the medium are (longitudinal wave); determines the amount of energy of each wave

  8. In the diagram, identify the wave property “A” • Frequency • Amplitude • Wavelength • Help! I don’t understand.

  9. Which of the following is true about waves in the diagram? • Wave X has a higher frequency than Wave Y • Wave X has a lower frequency than Wave Y • Wave X has the same frequency as Wave Y • Help! I don’t understand.

  10. Which of the waves in the picture has the greatest amplitude? 1 2 • 1 • 2 • 3 • Help! I don’t understand. 3

  11. Which property measures the amount of energy transferred by a wave? • Wavelength • Frequency • Amplitude • Help! I don’t understand.

  12. We are learning to demonstrate how waves transfer energy. We are looking for how waves interact with an object or other waves.  They either: Transmit-wave energy passes through an object. Reflect-wave energy bounces off an object. Refract – wave changes speed as it passes from one medium to another medium Diffract – wave spreads out as it passes through an opening or around the edge of a barrier Absorb-wave energy is taken in by an object they encounter. Interference-wave energy of multiple waves is combined.

  13. What happens to the energy of a wave when the crest of a transversewave meets the crest of a second transversewave? • Energy decreases. • Energy increases. • Energy stays the same. • I don’t get it! Help!

  14. What is it called when a wave bounces off of a barrier? • Refraction • Reflection • Diffraction • Help! I don’t know.

  15. What happens to waves as they go through an opening or around a corner of an object? • They are refracted. • They are reflected. • They are diffracted. • Help! I don’t know.

  16. As waves go through different mediums, what happens to them? • Waves change speed and are reflected. • Waves change speed and are refracted. • Waves change speed and are diffracted. • Help! I don’t know.

  17. We are learning to: demonstrate that vibrations produce longitudinal waves which move away from the original source. We are looking for: an explanation of the following: A medium is required (mechanical wave) A sound is produced (acoustic energy) A vibration is required to produce sound waves (longitudinal wave)

  18. Energy is required to create a sound wave. Sound energy is also known as . . . • Elastic potential energy • Radiant energy • Acoustic energy • Thermal energy • Help! I don’t understand.

  19. How does sound transfer energy? • By vibration of a medium, producing a transverse wave. • By vibration of a medium, producing a longitudinal wave. • By vibration of a medium, producing a surface wave. • Help! I don’t know.

  20. Sound cannot be heard in which of the following locations? • In a building • Under water • In space • In the forest • Help! I don’t know.

  21. We are learning to: identify the properties of sound. We are looking for: the identification of the properties of sound. Intensity- how much energy sound has Loudness- our perception of intensity Frequency- number of vibrations that pass a specific point in a period of time Pitch- our perception of frequency (high and low pitch) (i.e. Doppler Effect)

  22. As the frequency of a sound wave decreases. . . . • Pitch increases. • Pitch decreases. • Pitch stays the same. • Help! I don’t know.

  23. An ambulance is coming towards you. What happens to the sound waves? • Frequency decreases and pitch decreases • Frequency increases and pitch decreases • Frequency decreases and pitch increases • Frequency increases and pitch increases • Help! I don’t know.

  24. How are loudness and intensity related? • The louder the sound the less the intensity • The louder the sound the more the intensity • There is no relationship between loudness and intensity • Help! I don’t know.

  25. We are learning to: describe electromagnetic waves and give specific examples of several types.We are looking for: 1. Description:-transverse waves that change between electric and magnetic fields.-waves that do not require a medium -the energy that is transferred by electromagnetic waves (electromagnetic radiation)2. Examples of EM waves based on wavelengths and frequency:-Radio wave-longest wavelength; lowest frequency-Infrared-Visible light-Ultraviolet-x-ray-gamma rays-shortest wavelength; highest frequency

  26. One characteristic of EM waves is: • travels as a longitudinal wave • does not require a medium • does not travel as a transverse wave • I need help!!

  27. Which form of electromagnetic wave has the shortest wavelength and the greatest energy? • Radio waves. • Visible light waves. • Ultraviolet wave. • Gamma rays. • Help! I don’t understand.

  28. Which wave on the EM spectrum has the lowest frequency and longest wavelength? • Radio waves • X-rays • Visible light • Ultra violet • Help! I don’t understand.

  29. What is the only EM wave humans can see? • X-rays • Ultra Violet rays • Visible Light • Infrared • Help! I don’t understand.

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