1 / 20

Exploring Wave Interactions in Energy Transfer

Understand the nature of waves as energy transmitters through different mediums. Learn about transverse and longitudinal waves, properties like amplitude, wavelength, frequency, and wave speed. Delve into wave interactions such as refraction, dispersion, diffraction, and interference. Practice calculations to determine wave speed, frequency, and wavelength. Enhance your knowledge of how waves transmit energy and interact with their surroundings.

bwestmoreland
Download Presentation

Exploring Wave Interactions in Energy Transfer

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ch 15 Waves

  2. The Nature of Waves • Wave- Any disturbance that transmits energy through matter or empty space. • Wave Energy • Energy can be carried away from its source by a wave • Waves transfer energy – NOT MATTER.

  3. Energy Transfer Through a Medium • Medium- a substance through which a wave can travel. • Can be a solid, liquid, or gas. • When a particle vibrates (moves back and forth) it can pass its energy to a particle next to it.

  4. Some waves need a medium – others don’t

  5. Types of Waves • Transverse Waves- Waves in which the particles vibrate in an up-and-down motion. • Particles move across, or perpendicular to the direction the wave is going. • Crest- The highest point of a transverse wave. • Trough- The lowest point of a transverse wave (between 2 crests)

  6. Transverse Waves

  7. Types of Waves • Longitudinal Waves- The particles of the medium vibrate back and forth along the path the wave moves. Particles more parallel to the direction the wave is moving • Compression- A part of a longitudinal wave where the particles are crowded together. • Rarefaction-A part where the particles are spread apart. • Sound waves are longitudinal waves.

  8. Longitudinal Wave

  9. 1.2 Properties of Waves • Amplitude – Height of a wave. • The larger the amplitude is, the taller the wave is. • The larger the amplitude is, the more energy the wave has

  10. Properties of Waves • Wavelength- The distance between any two crests or compressions next to each other in a wave. • The shorter the wavelength the more energy the wave has.

  11. Properties of Waves • Frequency- The number of waves produced in a given amount of time. • Expressed in Hertz (Hz) • 1 Hz = 1/s • Higher frequency means higher energy

  12. Properties of Waves • Wave Speed: • The speed at which the wave travels • V = λ x f • SI Units

  13. Frequency and Wavelength Relationship • Frequency and wavelength are inversely related. • An increase in frequency causes a decrease in wavelength • An increase in wavelength causes a decrease in frequency

  14. Calculations • Determine the wave speed of a wave that has a wavelength of 5 m and a frequency of 4 Hz.

  15. Calculations • What is the frequency of a wave if the wave has a speed of 12 m/s and a wavelength of 3 m?

  16. Calculations • A wave has a frequency of 5 Hz and a speed of 18 m/s. What is the wavelength?

  17. Wave Interactions • Transmitted Waves • Refraction- The bending of a wave as the wave passes from one medium to another at an angle • Wave speed changes when a wave moves from one medium

  18. Refraction of Different Colors • Dispersion- Light rays are spread out into separate colors. • Each color of light has it’s own wavelength. • Diffraction- The bending of waves around a barrier or through an opening that changes its direction

  19. Wave Interactions • Interference- Waves occupy the same space at the same time. • Constructive Interference- the crest of one wave overlaps the crest of another wave. • The new amplitude of the combined wave is larger than the original waves • Destructive Interference- The crest of one wave overlaps with the trough of another wave. • The new amplitude of the combined wave is smaller than the original waves.

  20. Constructive & Destructive Interference

More Related