Entry Task
Monday, January 4th
Schedule:
• Sound
For each situation below,
Objective: I can understand that
explain, using full
sound is a wave
sentences, what might
happen to show that the
Homework
waves transfer energy.
• Read/RSG 16.1
1. A seaside beach in a
storm
2. An earthquake
3. Movement of coils
Tuesday, January 5th
Entry task:
Decide if the following
statements are true. If they
are, write them down as is.
If they are false, write down
a correct statement.
1. In a longitudinal wave, the
vibrations move
perpendicular to the
direction of the wave
2. Sound is a type of
electromagnetic wave.
3. Vibrations pass through
many parts of the ear, not
just the eardrum.
Schedule:
• 16.1 Notes
• 16.1 RKC/CE
Objective:
• I can understand that sound
is a wave and how its
produced and detected.
Homework:
16.1 review questions 1-6.
Full sentences, IQIA
Please have on your desk:
• 16.1 RSG
What is Sound?
• Sound is produced by vibrations.
– A vibration is a complete back-and-forth
motion of an object.
Sound travels as
longitudinal waves
• Sound waves travel in all directions away from
their source.
• In a longitudinal wave, the particles vibrate back
and forth along the same path that the wave
travels.
• However, the air or other matter through which
the wave is traveling does not travel with the
sound waves. The particles of air only vibrate
back and forth.
• Longitudinal waves consist of compressions and
rarefactions.
This is how a speaker
produces sound
Sound Waves Require a
Medium!
• Sound and Media All sound waves require a
medium (plural, media).
• A medium is a substance through which a
wave can travel by vibrating particles in the
material. Air is the most common medium of
sound waves.
• There are no particles to vibrate in a vacuum.
So, no sound can be made in a vacuum.
16.1 Sound is a Wave
• Do RKC and CE worksheet
– ISN 86
• 16.1 Review questions
–
–
–
–
From page 523
#1-6
Use full sentences, IQIA.
ISN 86
• Re-read 16.1 and review 16.1 RSG
Wednesday, January 6th
Entry Task
Start silently reading 16.2
Schedule:
• 16.2 Notes
Objective: I can understand that
frequency determines pitch
Homework:
• 16.2 RSG
Please have on your desk
• 16.1 RKC/CE
• 16.1 Questions
The speed of sound depends on
the medium
• The speed of sound depends only on the
medium in which the sound is traveling.
• Sound travels quickly through air, but it
travels even faster in liquids and even
faster in solids.
• Why? Think about how close together the
particles are!
Pitch depends on frequency
• How high or low you perceive a sound to
be is the PITCH of that sound.
• Humans can generally hear sounds that
have frequencies between 20 Hz and
20,000 Hz.
Frequencies you can’t hear
• Frequencies below 20
Hz are called
INFRASONIC.
• Frequencies above
20,000 Hz are called
ULTRASONIC.
Thursday, January 7th
Entry Task
Schedule:
• Scratch
Objective: I can
Homework:
Please have on your desk:
Entry Task
Friday, January
th
8
Schedule:
Answer the following questions using • Intensity and loudness
full sentences, IQIA
• Read/RSG 16.3
1. Describe what is different Objective:
about the sound waves
•I can understand that
produced by a low note and intensity determines loudness
a high note on a musical
Homework
instrument.
Finish anything not completed
2. Explain why two people
in class
singing the same pitch do
not sound exactly the same
Please have on desk:
3. How does perceived pitch
• 16.2 RSG
change as a sound source
passes
• Read 16.3
• Complete the 16.3 side of the half sheet
• Read iPod article
– Read with pen in hand (highlight, underline, annotate)
• Complete the iPod Volume side of the half sheet
• Show the article and completed half sheet to Mrs.
Guttormsen
• Get a 16.3 RSG and complete
• Article and half sheet go on ISN 91 (label it Intensity
and Loudness)
• RSG goes on ISN 90