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ETSU Middle school program

ETSU Middle school program. By Michael Erwin and Justin Keys. Chemistry. The smoke from dry ice is simply water vapor. The dry ice is also considered a bomb if in a concealed container. Atoms are made of protons, neutrons, and electrons.

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ETSU Middle school program

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  1. ETSU Middle school program By Michael Erwin and Justin Keys

  2. Chemistry • The smoke from dry ice is simply water vapor.The dry ice is also considered a bomb if in a concealed container. • Atoms are made of protons, neutrons, and electrons. • Particle movement of the three states of mater are very different. With solids, they vibrate in place. With liquids, they slide past each other disorderly. With a gas, they rapidly move and bounce off each other. • A plasma is very similar to a gas except for the fact that its atoms have no electrons. • A substance can be described as an acid or a base. Acids have a pH of 0.1(or below) to 6.9; bases have a pH of 7.1 to 13+. • Acids have a sour taste whereas bases are bitter. • Elements are a substance composed of only one type of atom whereas compounds are a chemical combination of two or more elements to make a new substance. • A chemical change is where the composition of the original substance is changed; a physical change is where only the physical aspect is changed, but the original substance is not chemically changed.

  3. Physics • Waves are a way to transfer energy through a medium (the space the wave travels through). • A disturbance point is where the wave starts. • A wavelength is a full cycle of the wave across the medium. • Wave frequency is the number of wavelengths per seconds.(hertz/Hz) • Speed of wave= Frequency X Wavelength • The anti-node is the peak of the wave; the node is where the wave ends to start a new wavelength.

  4. Engineering • If you remember nodes and anti-nodes from the last slide, then you will know how this works. • You have to tie the wind chimes by the string at the node of the pipe so that it will ring and be in tune. We used notes that were octaves higher and lower than each other so that they had harmony.

  5. Sound • Cochlea is stiff at the beginning with higher frequency, and at the end it is loose with lower frequency. • Duration is the length of a sound. • Envelope is the shape of the sound. • Attack is when the sound goes up, and decay is when the sound goes down. • White noise has a higher frequency while pink noise has a lower frequency. Brown noise is the lowest. • Timbre is the difference in the loudness of the overtone. • Applause is white noise. • Heavy rain is pink noise.

  6. WE DONE DID IT • THE END •  • ByMichael Erwin andJustin Keys

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