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

Written Response May 5th 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)

Written Response May 5th 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.

Light can……

Worksheet…..start at “Sound is” Something "heard" when sound waves from it enter the ear.

Worksheet… 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

Add to worksheet…. High energy vibrations make loud sounds. Low energy vibrations make soft (quiet) sounds.

Sound and States of Matter 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.

Time to Draw the Human Ear 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

Diagram of the Ear

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.

Study Jams ms/science/human-body/hearing.htm ms/science/human-body/hearing.htm

Definition Review: 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.

Discovery Ed Video Amplitude, Wavelength, Frequency, Pitch

Vocal Chords and Sounds: 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!

Vocal Chords:

Reasons For Hearing Loss: 1. Genetics(Inherited From Your Parents) 2. Drugs 3. Exposure to Loud Noise 4. Tumors & Brain Damage

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

Ear Activities: 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: Worksheets Human Ear Crossword Puzzle: The Human Ear Worksheet: Documents/Ear_Labeling.pdf Documents/Ear_Labeling.pdf Noise Levels: Documents/Audio_Quiz.pdf Documents/Audio_Quiz.pdf

Voice Activities: Voice Worksheet: e%20Worksheet.pdf e%20Worksheet.pdf Sound Activities: son.htm son.htm Seeing Sounds Worksheet: _/activities/cub_energy2/cub_energy2_lesson05 _activity1_worksheet.pdf _/activities/cub_energy2/cub_energy2_lesson05 _activity1_worksheet.pdf

Sound Videos: Helium Voice: Discovery Ed oice&N= oice&N=18342 Sound Waves: Voice Fire Extenguisher/Myth Busters: Discovery Ed oice oice The Coolest Things Sound Waves Do: