Monday, December 7 th Entry Task Using your book and your vocabulary from last week, re- write your descriptions of: MatterMatter SoundSound VibrationVibrationSchedule: Sound is a waveSound is a wave Homework Complete activityComplete activity Objective: I can explain how sound waves transfer energy through different states of matter. Please Have on Desk: Journal open to vocab, sharpened pencilJournal open to vocab, sharpened pencil

Glass Beakers Fill each of the 3 beakers with a different amount of water Lightly tap each beaker with a pencil 1.What do you notice occurs? Use the word vibrate in your answer. 2.What is the relationship between amount of water and pitch produced by the beaker?

Spoons Wrap the string ends around your index fingers Gently place your index fingers in your ears Swing the spoon so the handle of the spoon hits something metal (desk leg or sink). 1.What did you hear when the spoon tapped the metal object? 2.How did the sound travel from the spoon to your ears?

Tuning Fork Gently and quickly hit each tuning fork on your knee or elbow Hold the tuning fork close to your ear 1.What happens to the tuning fork when you hit it on a part of your body? Can you see this happening? Why or Why not? 2.What is the relationship between size of the tuning fork and sound created?

Straw Oboe Cut the top of the straw so it looks like the sample Purse your lips and place them just on the other side of the straw cut. Don’t press your lips too hard on the straw Blow through the straw to make a sound Cut a little of the straw from the bottom and make the sound again 1.Why was the straw able to make a sound? 2.What did you notice happened to the sound as the straw became shor ter?

Straw Oboe

Final Question Can sound waves travel through all states of matter? Prove your answer with examples from today.Can sound waves travel through all states of matter? Prove your answer with examples from today.

Possible Answer Yes, Sound can travel through all states of matter Gas – Air around tuning fork vibrates; Air in straw oboe vibrates Liquid – Water in beakers vibrates Solid – String attached to spoons vibrates; Glass of beaker

Tuesday, December 8 th Entry Task Copy the following and fill in the blanks with the correct state of matter. The medium for the tuning forks was a ____, the medium for the glass beakers was a _____, and the medium for the spoon when my fingers were in my ears was a _____. Schedule: Computer App Session 13Computer App Session 13 Homework Read pages 525 – 531.Read pages 525 – 531. Objective: I can design and code a computer simulation that shows at least 4 energy conversions Please Have on Desk: Storyboard, sharpened pencilStoryboard, sharpened pencil

Your project Your project : Forms of energy:Forms of energy: –Thermal- GPE –Electrical- Chemical –Electromagnetic- Elastic –Sound - Nuclear - Mechanical

Your project Your project : Energy Conversions mean thatEnergy Conversions mean that –One form of energy is changed into another form of energy. Ex: Chemical energy is converted into thermal energy as my muscles heat up from exerciseEx: Chemical energy is converted into thermal energy as my muscles heat up from exercise

Wednesday, December 9 th Entry Task How many energy conversions do you have completed on your physics simulation? How many energy conversions do you have completed on your physics simulation? Please have on desk: Journal, textbook, sharpened pencilJournal, textbook, sharpened pencil Homework: Re-read pages Re-read pages Objective: I will explain how temperature and medium effect the speed of a sound wave Schedule: Review 16.1Review 16.1

Thursday, December 10 th Entry Task Why is this scout doing this? Use what you know about the speed of sound in different mediums in your answer. Please have on desk: Journal, textbook, sharpened pencilJournal, textbook, sharpened pencil Homework: Read 16.3Read 16.3 Objective: I will explain how frequency and pitch are related. Schedule: 16.2 Frequency and Pitch16.2 Frequency and Pitch

16.2 Notes Pitch depends on Frequency of a sound wave.Pitch depends on Frequency of a sound wave. The characteristic of highness or lowness of a sound is called PitchThe characteristic of highness or lowness of a sound is called Pitch

A low pitch would have a low frequency and a Long wavelength.A low pitch would have a low frequency and a Long wavelength. A high pitch would have a high frequency and a short wavelength.A high pitch would have a high frequency and a short wavelength Notes

Frequency is measured in waves per second.Frequency is measured in waves per second. The unit for frequency is Hertz(Hz).The unit for frequency is Hertz(Hz) Notes

Sound waves with a frequency of below 20 Hz are called Infrasound and can’t be heard by humans.Sound waves with a frequency of below 20 Hz are called Infrasound and can’t be heard by humans. Elephants use Infrasound to communicate over long distances, sometimes up to 20 miles away.Elephants use Infrasound to communicate over long distances, sometimes up to 20 miles away Notes

Sound waves with a frequency of above 20,000 Hz are called ultrasound and can’t be heard by humans.Sound waves with a frequency of above 20,000 Hz are called ultrasound and can’t be heard by humans. Dolphins and bats use Ultrasound to find prey in dark environments.Dolphins and bats use Ultrasound to find prey in dark environments Notes

In your journal Draw a sound wave with a Low PitchDraw a sound wave with a Low Pitch Draw a sound wave with a High PitchDraw a sound wave with a High Pitch Use the words Pitch, Wavelength and Frequency to explain your drawingsUse the words Pitch, Wavelength and Frequency to explain your drawings

Kids Be Gone 3-4 Sentence summary of article then answer questions below.3-4 Sentence summary of article then answer questions below. Why can teens hear the Mosquito device, but adults can’t? Include detail about the human ear.Why can teens hear the Mosquito device, but adults can’t? Include detail about the human ear. Draw and label an example of a high frequency sound wave. Explain why it is high frequency.Draw and label an example of a high frequency sound wave. Explain why it is high frequency. Is this sound going to damage the ears of kids who hear it? Explain why or why not.Is this sound going to damage the ears of kids who hear it? Explain why or why not. Do you think its fair to use high frequency sounds as a deterrent against kids?Do you think its fair to use high frequency sounds as a deterrent against kids?

Kids Be Gone Kids have more hair cells in the cochlea so they can pick up a wider range of sound.Kids have more hair cells in the cochlea so they can pick up a wider range of sound. High Frequency sounds do not damage hearing, but loud sounds do.High Frequency sounds do not damage hearing, but loud sounds do. Do you think its fair to use high frequency sounds as a deterrent against kids?Do you think its fair to use high frequency sounds as a deterrent against kids?

Friday, December 11 th Entry Task Which wave has the highest pitch. Explain how you know. Schedule: 16.3 Intensity determines loudness16.3 Intensity determines loudness Homework: Read pages Read pages Objective: I will explain how the intensity of a wave affects its loudness I will explain how the intensity of a wave affects its loudness Please have on Desk: Textbook, journal, pencilTextbook, journal, pencil