Discuss pitch as a function of the frequency of a sound wave. Demonstrate how the thickness of a musical string will produce either a high pitch or a low pitch. Define infrasonic and ultra sonic waves. Compare the ultrasonic Hertz for humans, dogs, and bats. Indicate the speed of sound in air compared to light, and introduce intensity and loudness including measurements in decibels and which are objective and which are subjective measurements.

We will do a lab that investigates kinetic and potential energy involving a roller coaster. We will do an experiment outside involving rolling a ball down a slide to check the validity of our conclusions about kinetic and potential energy.

Discuss the Doppler effect and why it is affected by wave length. Use tuning forks explain how sound is a series of compressions and rarefactions of air molecules. Diagram a typical set of contractions and rarefactions produced using a tuning fork. Help explain the transmission by using a slinky. Discuss how and why a glass can be shattered by a singer hitting a particular note. Discuss pitch and wavelength.

Use diagram and charts to define and explain the Doppler effect. Determine that the effect is caused by a change in the wave length as a sound approaches and leaves an observe. Discuss how the change in pitch is caused by a change in the wavelength. Using running forks and diagrams, explain how a sound wave is a series of compressions and rarefactions of air molecules. Discuss pitch change corresponding to string diameter. Indicate the maximum and minimum Hertz heard by certain animals

Use a slinky to demonstrate both a transverse and a longitudinal wave. Concentrate on the movement of the particles of matter and the directions of the wave pulse. Discuss interference of wave motion, both constructive and destructive interference. Demonstrate how constructive interference will result in a wave where he energy of the resultant is addictive, and the resultant was of destructive intervene results in a straight flat line, no sound

summary of analysis questions, observations and conclusions for the two labs completed on 01/09/2025. Discussion regarding conclusions and percent error.

The lab for today involves kinetic and potential energy. We will do several thought experiments to investigate these concepts.

Determination of speed of sound lab using resonance tube.
Second lab involved viewing types of waves along with their properties through the use of a slinky.

Discuss liquid pressure used as used in everyday occurrence. Define and discuss liquid pressure as force /area. Determine how the liquid pressure is due to the weight of the liquid and not the area on the bottom of the container. Convert pressure into mass x gravity/area which becomes density/volume x gravity /area. Using the knowledge of liquid pressure, discuss how everyday appliances, such as toilet bowls operate without external energy sources. Discuss siphon physical.
Discuss wave propagation, wave diagrams and how to determine velocity of a wave after determining a formula which can be used.

Discuss and review sound and light as waves. Discuss how both are forms of energy, however, sound requires a medium while light does not. Define vibration and wave. Explain wave period. Demonstrate the production of a simple harmonic wave as a sine curve.