Lift Off!!! Lori Elpers October 14, 2009 Education 373 Mr. Sandrick
Models- something that represents something else in a smaller way.
Rocket –a jet engine containing its own propellant and driven by reaction propulsion
Phenomena- a rare or significant fact or event
“ Rockets fly in the air, but not like airplanes or helicopters. They are much faster and more powerful. They can fly straight up with such force that they pass through the atmosphere into outer space.
Hundreds of year ago, rockets were invented in China. The first rockets were shaped like arrows and they were not very powerful. The power of early rockets came from gunpowder.
The shape of rockets has changed. They are not wider for their length and they have big fins on the bottom. The fins help the rocket stay on course. Rockets are also much more powerful than they were in the past.
A rocket can only take off when a blast of energy forces it to move. The energy is created by some kind of fuel. Gunpowder was not a very good source of energy. Today, two liquid fuels are mixed together and as they burn hot gases are created. The gases shoot out the back of the rocket, pushing it off the group and up into the air.”