Download Electricity

Introduction
to waves
Monday, March 21, 2016
Unit Overview
Waves
Mechanical
Waves
Transverse
Ocean
wave
Electromagnetic
(EM) Waves
Longitudinal
Sound
wave
Light wave
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
Let’s break it down
Generic reason: a pulse (single disturbance)
Large magnitude (speed) and direction results
in a large force (F = ma) and a transfer from
PE to KE.
Mechanical waves transport energy through a medium.
The wave is the energy and the water is the medium through
Which it is transported.
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.
EQ: What causes wave
motion?
 Answer
your EQ in the summary section
(should not be more than three
sentences)
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.
Unit Overview
Requires
a medium
Waves
Mechanical
Waves
Transverse
Ocean
wave
Does not
require
a medium;
can
travel in a
vacuum
Electromagnetic
(EM) Waves
Longitudinal
Sound
wave
Light wave
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.
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)
Periodic Motion
Periodic Motion
Pendulum Animation
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
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.
Unit Overview
Requires
a medium
Moves
Perpendicular
Transverse
Ocean
wave
Does not
require
a medium;
can
travel in a
vacuum
Waves
Mechanical
Waves
Moves
paralle
l
=
Longitudinal
Sound
wave
Electromagnetic
(EM) Waves
Light wave
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)
Common Language
 The
properties of waveforms are
 Wavelength
 Amplitude
 Frequency
 Period
 Velocity
What is wave length?
What is amplitude?
What is the frequency of the wave?
What is the period of the wave?
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)