This experiment consists of exposing different glass thicknesses to different sound frequencies and observing the glass’s reaction. The natural frequency (the frequency at which a system oscillates when not subjected to a continuous or repeated external force) or resonance (the condition in which an object or system is subjected to an oscillating force having a frequency close to its own natural frequency) of glass varies from each thickness. When exposed to frequencies greater than glass’s natural frequency, the glass will physically react to the sound vibrations. The expected reaction from the glass was to shatter, crack, and vibrate at frequencies higher than the natural frequency.
Design It Clean Project
During this project we created a water filter for the people of India who rely on the Ganges River for their water supply. The Ganges if filled with debris, factory waste, chromium, human and animal waste, harmful diseases, and human remains. The water is very dirty, and the people are very uneducated, and don't understand what harm comes from drinking this unfiltered water. 400 Million people rely on the Ganges for water and many are getting sick. Our water filter is a bucket with a tin, two cloths, and activated carbon. To design our filter we used the small bucket to catch the filter water and then pour it out of a plastic spout. One cloth is placed atop the tin (with holes in it) and the activated carbon on the cloth. The other cloth is tied around the top of the bucket and the dirty water is poured there. Below is a picture of our filter and our project descriptions.
Snow and Water Science
Snow plays a large role in my life- it determines how much I get to ski, if the roads are safe to drive on, and how much water will flow the next summer. I learned that Colorado, Nevada, California, Arizona, Utah, and Mexico, all rely on the colorado river for water. With this high demand of water from the ever growing population, the smaller snowfall, the dry river delta, and the water evaporating from the many dams, the water supply is unable to provide some people with the water they need. During this project I got very good at comparing and contrasting observation on both graphs of water flow and how to read the back country terrain to analyze a potential avalanche. I can apply this knowledge to my life (skiing, sledding, rafting, ect.) and have a safer experience. One thing I enjoyed about this project is analyzing the data and how this directly effects our lives. One thing i would change is taking note in our own way instead of the worksheets. The poster below represents the water allocation system in the western United States and the effects on the annual flow. This water system ties into snow science because our river rely on the snowfall in the mountains to provide water for our rivers.
YOLO Project... Wear a Helmet
During this project, the criteria was to build a rocket out of a plastic bottle, and choose one variable to see how it effects the height of the rocket. My group chose fin shape. To fin the height of the rocket we used this equation: tan(angel) x distance from from launcher. To find pictures of our rockets and our project summary, click here.