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Understanding Waves: Parts, Characteristics, and Behavior

Learn about the parts of a wave, such as amplitude, crest, trough, and wavelength, and understand how waves move and behave. Explore the difference between mechanical and electromagnetic waves. Discover the relationship between frequency, wavelength, and wave energy.

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Understanding Waves: Parts, Characteristics, and Behavior

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  1. Name: Date:Subject: Do Now 1. What happens when light is absorbed ? A. it bounces off a surface B. it passes through a surface C. it is trapped inside an object D. It goes into a surface 2. What has to happen to the light in order to make a shadow? A. it bounces off a surface B. it passes through a surface C. it is bent as it passes through a surface D. it gets absorbed by an object

  2. Daily Objective I will identify and illustrate the parts of a wave.

  3. Restate Daily Objective I will identify and illustrate the parts of a wave.

  4. What is a wave? • A wave energy that travels from one place to another. • If you poke a floating ball, it oscillates up and down. • The oscillation spreads outward from where it started.

  5. Waves • When you drop a ball into water, some of the water is pushed aside and raised by the ball.

  6. Wave Parts • Amplitude is the maximum distance a wave vibrates from resting point • Crest is the top of a wave • Trough is the bottom of a wave • Wavelength is the distance from one point on a wave to the same point on another • measured crest-to- crest or measured trough-2-trough. • Frequency is the number of waves passing a specific point over a specific amount of time. Frequency is measured in Herz(Hz) • Increase frequency and you decrease wave energy

  7. Disturbance- the starting place of a wave Mechanical Waves- waves that require a medium Examples: • Ocean waves • Rope waves Electromagnetic Waves are produced by vibration of an electrically charged particle Hertz- The unit of measuring waves Increasing frequency increases energy Shorter wavelengths increases energy Longer wavelengths increases energy

  8. The Pitch of a wave is how it sounds

  9. Waves in Motion • Key Question: How do waves move?

  10. Restate Daily Objective I will identify and illustrate the parts of a wave.

  11. Name:________ Date:___________ Subject:________ Performance 1 Turning on a light produces visible light. In what location would this light be the least visible?A in space C underground B under water D in a smoky room 2 How can radio waves be described? A Radio waves are mechanical waves that must move through a medium. B Radio waves are mechanical waves that require no medium. C Radio waves are electromagnetic waves that require no medium. D Radio waves are electromagnetic waves that must move through a medium. 3 Which of the following is not an example of a mechanical wave? A sunlight C ocean waves B vibrations of a guitar string D soundwaves 4 What is amplitude? A the maximum displacement from the midpoint between the crest and trough B the top of the wave C the horizontal distance the waves travels D the number of waves that pass a specific point in a specific time &

  12. Name:_____ Date:____Subject:___ Exit Ticket • Should amplitude be measured from resting point to the crest or trough? Why? • How is frequency different from wavelength?

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