Showing posts with label Experiment 3: Get a Jet Going. Show all posts
Showing posts with label Experiment 3: Get a Jet Going. Show all posts

Saturday, February 27, 2010

Experiment #3

Get a jet Going!

Supplies you will need: Some thread or string small enough to fit through a straw, straws, baloons, and tape of some sort.



Directions: First feed the thread through your straw. Then find an area where you can stretch the string across the room. Either you will have to tie the ends to something or get two people to hold the ends.



Second Step: Now get another person to blow up a balloon.Then have the person hold the balloon by the neck and do not the air out.



Third step: Tape the staw onto the balloon.



Third Step: now take the baloon connected to the straw and go to one end of the string.



Now the final step let the balloon go and watch it race down the string! Here are my children doing the experiment!


Friday, February 26, 2010

A Jet Engine!

A jet engines power the fastest cars in the world as well as high-speed aircraft. A jet engine sucks in air at the front and heats this air with burning fuel. It then sends the hot air blasting out from the back of the engine. this forces the aircraft or car forward at very high speeds.



How a Jet Engine Works
All jet engines, which are also called gas turbines, work on the same principle. The engine sucks air in at the front with a fan. A compressor raises the pressure of the air. The compressor is made up of fans with many blades and attached to a shaft. The blades compress the air. The compressed air is then sprayed with fuel and an electric spark lights the mixture. The burning gases expand and blast out through the nozzle, at the back of the engine. As the jets of gas shoot backward, the engine and the aircraft are thrust forward.

Newton's laws of motion are three physical laws that form the basis for classical mechanics. They have been expressed in several different ways over nearly three centuries,[1] and can be summarised as follows:

1.In the absence of a net force, a body either is at rest or moves in a straight line with constant speed.
2.A body experiencing a force F experiences an acceleration a related to F by F = ma, where m is the mass of the body. Alternatively, force is equal to the time derivative of momentum.
3.Whenever a first body exerts a force F on a second body, the second body exerts a force −F on the first body. F and −F are equal in magnitude and opposite in direction.

Lesson Plans and Standards

Get A Jet Going: Standards and Lesson Plan


Extended Resources:

Tabbatha Monroe's experiment: Get a Jet Going