Transcript Standard EPS Shell Presentation

Physics A First Course
Vibrations, Waves, and Sound
Chapter 20
Vibrations, Waves, and Sound
Waves
 20.1
Waves
 20.2
The Motion of Waves
 20.3
Wave Interference and Energy
20A Investigation: Waves
Key Question:
What are the properties
of waves?
*Students read text
section 20.1 AFTER
Investigation 20A
20A Investigation Topics
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Make a wave pulse.
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Observe different types of waves.
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Create wave patterns.
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Measure wave frequency and period.
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Sketch waves.
Chapter 20.1 Objectives and Vocabulary
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Describe transverse and
longitudinal waves.
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Learn the properties of waves.
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Calculate the speed of a wave.
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Identify the fundamental and
harmonics of a standing wave.
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wave
transverse
longitudinal
crest
trough
wavelength
standing wave
fundamental
harmonics
Recognizing
Waves
 light
 water
 radio
 TV
 cell
phone
Chapter 20.2 Objectives and Vocabulary
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Learn how waves propagate.
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Demonstrate the four wave
interractions.
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propagate
plane wave
wave fronts
circular wave
boundaries
reflection
refraction
diffraction
absorption
20B Investigation: Resonance and Standing
Waves
Key Question:
How do we make and control waves?
*Students read text section 20.3
AFTER Investigation 20B
20B Investigation Topics

Experiment with standing waves on a string.
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Measure frequency and wavelength.
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Identify the relationship between frequency
and wavelength.
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Determine how frequency and energy are
related.
Chapter 20.3 Objectives and Vocabulary
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Describe the superposition
principle, constructive and
destructive wave interference.
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Review natural frequency and
resonance.
Learn about the relationship
between wave energy and its
properties.
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interference
superposition
principle
wave pulse
constructive
interference
destructive
interference