Aim: To find how the ratio of how much air to how far a balloon will go. Hypothesis: I think that the more air in the balloon the farther it will go. I also think that the air resistance that the balloon will experience because of more air will not make the balloon lose any power so resulting in the graph having no curve. Materials: • 1m ruler • String • Drinking straw • Air Pump • 9 long balloons • Sticky tape • 2 Chairs Method: 1. Two chairs were placed at each end of the room.
One end of a string was attached to the front of the glider. From the glider the string passed over a pulley mounted at the end of the track, and then downward to a weight hanger hooked to its lower end. Because of the very low friction of the glider's wheels and of the pulley, any weight hung on the string resulted in a horizontal force pulling the glider along the track. By varying either the amount of mass placed on the weight hanger or the amount of extra mass loaded on the glider, we could vary the acceleration of the glider. Outline of technique: Two photogates were set alongside the track about 0.5 m apart.
9. Pressurizing fuel rockets Things Helium is Good For 10. Filling balloons. 11. Inert gas shield for people while welding.
Record the color of the balloon used for this sample. Sample B (Human Exhalation) - Have one team member blow up a balloon to the required diameter. Twist and tie the balloon, and record balloon color. Sample C (Automobile Exhaust) - Your teacher will supply you with this balloon. Record the color.
They walked there everyday and launched a different rocket and everyday the rockets improved. There were a couple people in town that helped them with welding the nozzles on and ordering the right kind of metal to take the heat. Miss Reilly, the science teacher, bought Homer a book on building rockets for his birthday. Quiten, the local nerd, and Homer mixed certain chemicals in science class to make a better gas to make a better and more powerful launch. With this new formula the rockets became more successful but they would blow up in the air but they never gave up.
Hypothesis: If more yeast is added to the mixture then there will be more carbon dioxide created to make the balloon bigger. Variables: Independent Variable: Yeast Dependant Variable: Carbon Dioxide Controlled Variables: Water and Sugar Materials: - Yeast - Sugar - 125ml Erlenmeyer Flask - 4” balloon (Deflated) - Luke warm water - Masking Tape Method: 1. Measure out 5g yeast, 20g of sugar, ad 120ml of luke warm water (Less than 100 degrees F) 2. Place yeast, sugar and water in a 125ml Erlenmeyer Flask. 3.
This release of energy rotates the shaft and causes the throwing arm to move in a wide arc, launching the projectile from the attached basket. Trebuchets, on the other hand, do not rely of elasticity. They rely primarily on leverage to send projectiles soaring through the air. They use a “Class 1” lever, where a force applied on one end of the lever, creates motion in the other end to move the throwing arm. This force is provided by gravity when a huge counterweight at one end of the arm falls.
Chemical propulsion is the only way to get spacecraft from the surface of the planet but once in space, it’s a different story. Nuclear propulsion is vastly superior to chemical propulsion. The reason that nuclear propulsion is better is because it has a higher specific impulse or Isp. Absolute Astronomy’s definition of Isp is a way to describe the efficiency of rocket and jet engines. (“Specific Impulse”, n.d.).
Air tracks were used to reduce friction; the small amount of friction left in the system will be considered negligible in the data. The weight was subject to gravity which has a constant acceleration of -9.81 m/s2. Several variables were recorded, including: acceleration of the glider, velocity of the glider, position of the glider along the track, the time it took from release to bumping the end of the track. Values were retrieved from Data Studio (computer program) Both my partner and I took turns both prepping and releasing the glider, as well as initiating Data Studio and the motion sensor. Counting down to remain in sync with each other one would release the glider as the other started the program.
The way they started the fire was also different. In “Lord of the Flies” they used Piggy’s eye glasses to reflect the sun and start the flame, whereas Chuck used the friction of two sticks to ignite his fire. But the fire benefited them in all the same ways. The settings of both the book and the movie are similar to each other, in the way that they both take place on an uninhabited island in the Pacific Ocean. This is very important because the island in “Lord of the Flies” is shaped like a boat, representing a way to get home.