Sitting in assigned seats
Not walking around the room
Working on something quietly

• Last week, we reviewed light. Describe the different ways light can interact with objects
(hint – think of light coming through a window or bouncing off of something shiny)

• Light can interact with objects in a variety of ways. Light can be transmitted through a window and light can be reflected off shiny objects like mirrors. Light can also be absorbed as in the summer when you wear dark colored clothing; you feel hotter in dark colors. Lastly light can be refracted or bent. This bending of light can be seen when you stick a straw into a glass of water. Light travels at different speeds so the straw appears bent.

• Something "heard" when sound waves from it enter the ear.

• These waves have different characteristics such as frequency and amplitude, which will determine the properties of sound such as pitch and loudness.

Answer on worksheet…
• Using these statements, how do we hear?
• The human ear receives sound waves as vibrations
• A membrane in the ear vibrates sending signals as electrical messages
• The brain converts and processes these signals as sound

• High energy vibrations make loud sounds.
• Low energy vibrations make soft (quiet) sounds.

• Sounds can travel through all three states of matter.
• In which state of matter does it travel the fastest? (HINT: think of the atoms)
• Fastest in solid
• Slowest in gas

Sound Travels Differently Through Each
State of Matter:

What is Sound??
Add to alphabet book
• Sound is a form of energy that is caused when vibrating materials produce waves that move through matter.

• The structure of the ear has many parts, which affects how we hear things.
• On the back of your paper from your eye drawing, draw the ear on one half

Structures of the Human Ear – write these notes
• Outer Ear catches sound waves and funnels them into the ear canal where they strike the eardrum (middle ear)
• Eardrum is a thin, taut membrane which vibrates as sound waves strike
• As the eardrum vibrates, it causes tiny bones on the other side of the eardrum to vibrate also.

Structures of the Human Ear – write these notes
• Tiny bones: the hammer, the anvil, and the
stirrup amplify, or increase, sound.
• These bones are attached to the cochlea, which is filled with a liquid that changes vibrations to electrical messages
• These messages are sent through the auditory
nerve to the brain, which interprets the sound.

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

• 1. Frequency- the number of cycles a waves completes in a period of time. More energy a sound has = higher its frequency
• 2. Amplitude-the height of a wave
• 3. Pitch- how high or low a sound is; due to how fast it vibrates
• 4.Volume- the loudness or softness of a sound that you hear.

• Amplitude, Wavelength,
• Frequency, Pitch

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

• 1. Genetics(Inherited From Your Parents)
• 2. Drugs
• 3. Exposure to Loud Noise
• 4. Tumors & Brain Damage

• In the time we have left, we will complete a
Jeopardy review of 6.P.2 concepts

• Jiggling coins, clinking glasses, clapping hands…think you know what these sound like? Test the ability of people to identify several sounds with this game. People should close their eyes or turn away from the “sound maker”. Make each sound and see if everyone knows what it is. Example soundsL
• 1. Shake pennies or other coins
• 2. Clap hands
• 3. Clap chalkboard erasers
• 4. Tap a pencil or pen on a desk
• 5. Close a book
• 6. Crumple up paper or foil
• 7. Stomp on the floor
• 8. Tear up some paper
• 9. Close a stapler
• 10. Bounce a ball

• Human Ear Crossword Puzzle:
• http://lessonplancentral.com/puzzles/human_ea r.pdf
• The Human Ear Worksheet:
• http://www.audiology.org/resources/consumer/
Documents/Ear_Labeling.pdf
• Noise Levels:
• http://www.audiology.org/resources/consumer/
Documents/Audio_Quiz.pdf

• Voice Worksheet:
• http://www.clinton.k12.ky.us/userfiles/1061/Voic e%20Worksheet.pdf
• Sound Activities:
• http://www.smm.org/sound/nocss/activity/hand son.htm
• Seeing Sounds Worksheet:
• http://www.teachengineering.org/collection/cub
_/activities/cub_energy2/cub_energy2_lesson05
_activity1_worksheet.pdf

• Helium Voice: Discovery Ed
• http://app.discoveryeducation.com/search?Ntt=v oice&N=18342
• Sound Waves: Voice Fire Extenguisher/Myth
Busters: Discovery Ed
• http://app.discoveryeducation.com/search?Ntt=v oice
• The Coolest Things Sound Waves Do:
• http://www.youtube.com/watch?v=Ude8pPjawKI