Energy Unit Week 33 Directions 1.Prepare your desk for science.
Science notebook Signed matter test (if you didnt have it yesterday
bring it to me) 2.Use voice level 0 (no voice) to review your sound
energy notes on notebook pg. 81.
Slide 3
Targets & Warm Up Targets: Students will discover how
making changes to a vibrating object affects how the object
vibrates. Warm Up: What is a vibration? How are vibrations related
to sound? Do all objects vibrate in the same way?
Slide 4
Table of Contents DateTitlePage 5-15-15Sound & Vibrations82
Once you are finished with the Table of Contents, go to page 81 and
add the title and date to the top of the page.
Slide 5
Sound Occurs when objects vibrate (a quick back-and forth
movement) The vibrations travel through air as sound waves If the
waves reach our ears, we hear sound
Slide 6
Longitudinal Waves Particles move parallel to the direction the
wave travels Particles vibrate side to side
Slide 7
Transverse vs. Longitudinal
Slide 8
How to Draw Waves
Slide 9
Important words for today: Frequency Pitch Thickness
Tension
Slide 10
Wave Vocabulary Frequency: The number of waves that pass a
certain point in a certain amount of time Faster vibration = higher
frequency Slower vibration = lower frequency
Slide 11
Frequency Faster vibration = higher frequency Slower vibration
= lower frequency
Slide 12
Wave Vocabulary Pitch: What makes a sound seem high or low
Depends on a sounds frequency Higher frequency = high pitch Lower
frequency = low pitch
Slide 13
Pitch Faster frequency = high pitch Slower frequency = low
pitch
Slide 14
Fill in the blanks Vibration: ____________ Frequency:
____________ Pitch: ____________ Vibration: ____________ Frequency:
____________ Pitch: ____________ fast high slow low
Slide 15
Listen to the sounds High pitch? Low pitch? High frequency? Low
frequency? Fast vibration? Slow vibration? How is pitch related to
frequency and vibration?
Slide 16
Sounds
Slide 17
Today we will experiment with the thickness and tension of
objects Thickness: the distance between the top/bottom or
front/back of something Tension: A force tending to stretch or
elongate something vibration, frequency, pitch Do you think that
changing the thickness and tension of objects will change the
vibration, frequency, and pitch?
Slide 18
Question to discuss: Guitar strings do not all have same
thicknesses. Why?
Slide 19
Thickness of Guitar Strings
Slide 20
Question to discuss: What is the purpose of this section of the
guitar? It increases and decreases the tension (tightens and
loosens the string)
Slide 21
Tension of Rubber Bands
Slide 22
Extra Time? https://www.brainpop.com/artsandmusic/maki
ngmusic/strings/ String Instruments (4 minutes)
Slide 23
Homework
Slide 24
Reflection Questions How does changing the thickness of an
object affect the vibration of the object? How does changing the
tension of an object affect the vibration of the object?
Slide 25
Targets (Revisited) Students will discover how making changes
to a vibrating object affects how the object vibrates.
Slide 26
Homework SubjectHomeworkDue Date ScienceSound Energy
worksheetMonday Bring home your science notebook to help you
complete the assignment!
