Informative Speech About The Inventors

Today I am here to present a pitch about the Eureka Stockade. With help from you financially, this documentary will be very successful and I feel that it is an important topic to cover as it was a significant stepping stone in Australians history.

1. Which reactants used in this experiment are flammable? Discuss the safety precautions that are necessary when working with flammable materials in the lab?

A direct attack method is designed to extinguish the fire by applying water in a straight or solid stream to the base of the fire. This allows the

The sound waves are produced by a random oscillating crystal, and are inaudible to humans. A instrument called a

Main point 1 Nikola Tesla was born July 9, 1856 in Smiljan, Austro-Hungarian Empire today it is know as Croatia.

Dry chemical extinguishers put out fire by coating the fuel with a thin layer of dust, separating the fuel from the oxygen in the air. The powder also works to interrupt the chemical reaction of fire, so these extinguishers are extremely effective at putting out fire. It is very effective with a low risk of re-ignition.

The purpose of this experiment is to measure the speed of sound in air and to determine the effects of frequency on the speed of sound.

The most common source of heat for the purpose of firefighting comes from chemical reactions. When something burns, it is the result of a chemical reaction where heat is being released. Pyrolysis is the "decomposition or transformation of a compound caused by heat."(Coleman, et al. 81)

The design of our project was based upon the instruments seen in the Dr. Seuss novels. The instrument is multi-colored and similar to the color scheme found on the cover of the book, Oh, the Places You’ll Go. The shape and unique structure are also attributed to many distinctive instruments found in Dr. Seuss stories. We decided to have two mouthpieces available, so two people can play the instrument at the same time and the overall structure characterizes the disproportionate instruments seen in the books. Going with the theme, the sound created is also very interesting. When assembling the instrument, we had stuck wax paper between the parts of the pipe, creating a kazoo-like sound. We had chosen to use PVC-pipes in order to lock in the sound, leaving no air to escape, and funnels in order to amplify the sound being given off. Before our final design, there had happened to be another idea we were going for. The design had included a chamber that would contain soft air gun pellets or bb gun pellets that were capped off by 3D printed discs, covering each end of the side chambers. These discs would have holes that would allow air to enter the chamber, move the pellets around and create a rattle sound

Relevance to the Audience: In a survey conducted by N3L optics, a sports performance sunglass retailer, “85 percent of Americans recognize the need for eye protection”. Many of you probably own a pair of sunglasses.

This can be accomplished only through complex computer simulations, which uses three acoustic modulations to hold a levitating object in midair. These acoustic modulations can even be programmed to twirl and move levitating objects, or simply form a high-pressure bubble that holds the object stationary. Some acoustic simulations require the levitating object to be encased on all four sides by loudspeaker arrays to improve maneuverability. The actual loudspeaker relies on a series of long and short wavelengths, of which are generated at 40 kilohertz, at 140-150 decibels. Because this device runs at 40 kilohertz, the sound frequency is well above amicable human hearing, but is detectable to dogs. When the inaudible wavelengths create a pocket of low pressure, they can counteract the gravitational force of a polystyrene ball 5mm in circumference. Allow its rather paltry ability to levitate only light-weight material averts this technology from being applied as a tractor beams, medical scientists are exuberant about the fact that they can modify it to activate acoustic medication and manipulate individual

So, today we are in New Year 2016 and I hope everyone has their own new year resolutions or goals, such as thin people wish to gain weight, fat people wish to lose weight, some wish to spend less to become rich so that they can spend more, and some they wish to quit bad habits. So, I would like to wish good luck for your resolutions to be achieved.

(Music has been used for centuries to change energy levels, improve mood and even to help people who are ill or suffering from emotional trauma to heal.)

In 1933, what thought to be just a dream, became a reality. Edwin Armstrong invented the

Today we have moved beyond young men in street rattling wooden noise makers, technology has given us a new kind of fire alarm. There are 2 main kinds of fire alarms: ionization and photoelectric. Ionization alarms sound more quickly when a flaming, fast moving fire occurs, photoelectric alarms are quicker at sensing smoldering, smoky fires. There are also combination smoke alarms that combine ionization and photoelectric into one unit, called dual sensor smoke alarms. Most of the fire alarms are powered by batteries which in order for the alarm to work, need to changed regularly. They provide early detection, and thus warning, of the fire. But they take no action on the fire itself.