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Introduction to waves Monday, March 21, 2016.

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Presentation on theme: "Introduction to waves Monday, March 21, 2016."— Presentation transcript:

1 Introduction to waves Monday, March 21, 2016

2 Electromagnetic (EM) Waves
Unit Overview Waves Mechanical Waves Electromagnetic (EM) Waves Transverse Longitudinal Light wave Ocean wave Sound wave

3 Tsunami As you watch the video think about the following:
What causes the Tsunami? What role does energy play if any? What relevance does the velocity of the wave have on the destruction? What happens to the water after the Tsunami strikes? Tsunami Video

4 Let’s break it down

5 Generic reason: a pulse (single disturbance)

6 Large magnitude (speed) and direction results in a large force (F = ma) and a transfer from PE to KE.

7 Mechanical waves transport energy through a medium.
The wave is the energy and the water is the medium through Which it is transported.

8 EQ: What causes wave motion?
Read through your CNs Highlight, underline, or circle the words associated with how a wave is created and what a wave is. Highlight, underline, or circle the words that describe the purpose of a medium and how it functions.

9 EQ: What causes wave motion?
Answer your EQ in the summary section (should not be more than three sentences)

10 Types of Waves There are two types of waves
Type of wave is dependent on whether it requires a medium. Mechanical waves require a medium Electromagnetic waves do not require a medium.

11 Electromagnetic (EM) Waves
Unit Overview Does not require a medium; can travel in a vacuum Waves Requires a medium Mechanical Waves Electromagnetic (EM) Waves Transverse Longitudinal Light wave Ocean wave Sound wave

12 EQ: What are the characteristics of the different types of waves that occur in nature?
Read through your CNs Highlight or underline the words that are similar between a electromagnetic and mechanical wave. Circle the words/concepts that make electromagnetic and mechanical waves different from one another.

13 EQ: What are the characteristics of the different types of waves that occur in nature?
Answer your EQ in the summary section (should not be more than three sentences)

14 Periodic Motion

15 Periodic Motion Pendulum Animation

16 How do particles move in a mechanical wave?
As you watch the animations, pick a particle and follow it as it moves in the simulation. Particle simulation; longitudinal and transverse waves

17 EQ: What are the characteristics of mechanical waves?
Read through your CNs Underline the words/phrases that explain how particles move. Highlight or Circle the following words; transverse, longitudinal, medium, perpendicular, parallel, crest, trough, compression, rarefaction, amplitude.

18 Electromagnetic (EM) Waves
Unit Overview Does not require a medium; can travel in a vacuum Waves Requires a medium Mechanical Waves Electromagnetic (EM) Waves Moves Perpendicular Moves parallel = Transverse Longitudinal Light wave Ocean wave Sound wave

19 EQ: What do the properties of waveforms allow you to do?
Answer your EQ in the summary section (should not be more than three sentences)

20 Common Language The properties of waveforms are Wavelength Amplitude
Frequency Period Velocity

21 What is wave length?

22 What is amplitude?

23 What is the frequency of the wave?

24 What is the period of the wave?

25 EQ: What do the properties of waveforms allow you to do?
Answer your EQ in the summary section (should not be more than three sentences)

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