Thursday, November Focus: parts of the ear & vocal cords

Science

Thursday, November 5 2015Focus: parts of the ear

& vocal cords

Warm Up..

• Place your backpacks along the back wall• Grab your notebook, pencil, agenda• Complete Thursday’s warm up now! DO NOT

WORK AHEAD! • REMEMBER YOU ARE QUIET IN YOUR SEAT

WORKING WHEN THE FINAL BELL RINGS

Agenda…

• Finish up Tuning Fork Lab with discussion and demo.

• KWL Chart in Notebook• Begin Parts of the Ear – guided notes – Color coding activity– Chromebook Activities

In your notebook…

• Think back to our sound labs and explain how a tuning fork illustrates sound waves (explain in terms of sight, touch, and hearing)

In your notebook…

• In terms of sight:• When we looked closely at the tuning fork after

hitting it on the table we could SEE VIBRATIONS• In terms of touch:• After hitting it on the table we could FEEL

VIBRATIONS• In terms of hearing:• After hitting it on the table we could HEAR SOUND

K-W-L Chart – 5 minutes

• Draw this table in your notebook now…“What I Know about Sounds”:

“What I Wonder about Sounds”:

“What I’ve Learned about Sounds”

K-W-L Chart- 3 minutes

• Complete the column “What I Know about Sounds” (try to list 3 things in this column)

“What I Know about Sounds”:

“What I Wonder about Sounds”:

“What I’ve Learned about Sounds”

Guided Notes Handout

• You will now receive a worksheet (1/2 sheet)• These are guided notes for how sound travels

to our ear and how it is picked up by our brains as sound

• Follow along as we work to fill in the missing words

Sound in the Ear

The Outer Ear catches sound waves and funnels them into the ear canal where they strike the eardrum.

Sound in the Ear

The eardrum is a thin, taut (tight) membrane which vibrates as sound waves strike it.

Sound in the Ear

As the eardrum vibrates, it causes the tiniest bones in our bodies to move.

These bones are known as the hammer, anvil, and stirrup.

Sound in the Ear

This movement amplifies, or increases, the sound.

This region is known as the middle ear.

Sound in the Ear

These bones are attached to the cochlea, which changes vibrations to

electrical impulses. The cochlea is a fluid-filled, snail shaped

cavern in your skull behind each ear.

Sound in the Ear

Electrical Impulses are sent along the auditory nerve to the brain where it is interpreted as sound. This region is known as the inner ear.

This is how we hear different sounds.

Fun Fact….• The inner ear also contains semicircular

canals, which function more for purposes of equilibrium than hearing.

• Do you know anyone that gets motion sickness?

• This part of the ear controls how our mind feels balance!

How the ear works - animation

• https://www.youtube.com/watch?v=HMXoHKwWmU8

Color Coding Activity – Parts of the Ear

• You will now receive a handout detailing the parts of the ear

• We will work to color code our diagram of the ear now

Follow along as we color code the Diagram of the Ear

Chromebook Activities

• 2 activities on StudyJams• 1 activity on BrainPop• You will receive several handouts explaining

these activities• We will review these now!

Study Jams The Senses Hearing

• You will go to study jams and type in a search box: the senses: hearing

• http://studyjams.scholastic.com/studyjams/jams/science/human-body/hearing.htm

• Watch the video

Study Jams The Senses Hearing

• Select the test yourself button to see how much knowledge you have on hearing!

• Record your score

Study Jams…Sound

• You will now watch another video on StudyJams • Before you start the video, write these questions in

your notebook leaving 2 lines between each question1. What causes sound?2. How does sound travel?3. What is the frequency of sound?4. What is a sound’s pitch?5. What is a sound’s volume and how is it measured?

Study Jams…Sound

• You will go to study jams and type in a search box: sound

• http://studyjams.scholastic.com/studyjams/jams/science/energy-light-sound/sound.htm

• Answer the questions you wrote in your notebook as you listen to the video

Study Jams Sound

• Select the test yourself button to see how much knowledge you have on sound!

• Record your score

BrainPop Video

• You will go to Brainpop to watch the video on Sound

• Username: jms• Password: jaguars• After you watch the video, complete the

activity page handout• Last take the classic quiz and record your score

Chromebooks….

• I will dismiss you by rows to get your chromebooks

• Once you are back at your seat, login• In a search box type StudyJams• Follow the directions on your handout• You have the rest of class to complete this !

Vocal Chords and Sound – write these notes in your notebook

• Vocal chords produce sound. • Larynx = the voice box. • Trachea = windpipe (the tube that connects

your lungs to your throat)• The vocal chords vibrate to create the sound

of your voice.Put your hand on your throat and hum…you are feeling your vocal chords vibrate!

Vocal Chords

Animation for how vocal cords work

• https://www.youtube.com/watch?v=R17yH0GSDvA

Exit Ticket…

• You are a sound wave; describe the path you take to reach the brain!