Rocket Science
Published on Nov 21, 2015
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PRESENTATION OUTLINE
Background Information
1. An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
2. The acceleration of an object increases with increased force and decreases with increased mass.
3. Every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in direction.
Photo by paukrus
HYPOTHESIS
IF WE USE DIFFERENT VARIATIONS OF BOTTLES THEN THE FORCE WILL VARY BECAUSE ALL THE BOTTLES ARE DIFFERENT IN SIZE.
Photo by NASA's Marshall Space Flight Center
Materials
* 2 straws with different diameters
* several plastic bottles, in different sizes
* modeling clay
* scissors
* construction paper
* meter stick
* tape
Photo by Stuck in Customs
Procedures 1
1. Make a data table like the one shown on the sample notebook page.
2.Insert the straw with the smaller diameter into one of the bottles. Seal the mouth of the bottle tightly with modeling.
3.Cut two thin strips of paper, one about 8cm long and the other about 12cm long. Connect the ends of the strips to make loops.
Photo by deanoakley
Procedures 2
4. To create the rocket, place the straw with the larger diameter through the smaller loop and tape the loop to the straw at one end. Attach the other loop to the other end of the straw in the same way. Both loops should be attached to the same side of the straw to stabilize your rocket in flight.
5. Use a small ball of modeling clay to seal the end of the straw near the smaller loop.
6. Slide the open end of the rocket over the straw on the launcher. Place the bottle on the edge of a table so that the rocket is pointing away from the table.
Photo by Harley School Learner
Procedures 3
7. Test launch your rocket by holding the bottle with two hands and squeezing it quickly. Measure the distance the rocket lands from the edge of the table. Practice the launch several times. Remember to squeeze with equal force each time.
8. Launch the rocket four times. Keep the amount of force you use constant. Measure the distance the rocket travels each time, and record the results in your data table.
9. List all the variables that may affect the distance your rocket flies. Change the rocket or launcher to alter one variable. Launch the rocket and measure the distance it flies. Repeat three more times, and record the results in your data table.
Photo by jurvetson
Data
Analysis
Test #1's average was 329.63cm and test #2's average was 342.9cm the differences varied considering the rocket launchers difference in size which ended up having a difference in length because of the projectile.
Photo by tiffa130
Conclusion
The original distances of the first rocket compared with the distance of the modified rocket differ because they both varied in size just like our hypothesis said that the distance will vary because of the different variations of bottles which ended up making our hypothesis being true. Newtons law had a big impact in this experiment because of the first law which says an object at rest stays at rest unless an unbalance force acts upon it. In conclusion our SLE is life long learner because we persevered to the end.
Photo by the justified sinner
