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It’s not Rocket Science…
HAL Seminar
Introduction
The Department of Defense can’t keep up with the war on terror using regular methods. They are looking for people that can excel under pressure using everyday objects in innovative ways. They are looking for people who fill this description. Is it you? Your first task is to make a rocket out of two liter bottle…
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Task
You must create your own water bottle rocket that will be launched in competition with your classmates. The base of the water rocket will be a two liter soda bottle.
You will include blueprints, a force diagram, and a one page written explanation of the physics of your rocket.
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Process
Your project will occur in 4 phases:
1. Research
2. Drawing
3. Building
4. Write-up
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Process: Research
In order to build a successful rocket you must
know what makes it fly. Use the following sites to research these questions (and whatever else you think will be helpful):
– What makes the rocket (soda bottle) fly?– How can you maximize propulsion?– How does the body shape affect its flight?– What do fins do?
NASA Beginner's Guide to RocketsWater Rocket IndexRocket PrinciplesPractical Rocketry
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Process: Drawing
Now that you know what you’re looking for (hopefully), it’s time to come up with a plan. Make a scaled drawing of the rocket you will build labeling all materials. You may use graph paper by hand or use a program such a Visio.Remember: You must use a two-liter soda bottle as your base.How to Make a Scaled Drawing
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Process: Building
Assemble the rocket according to your blueprint.
Remember…You MUST use a two-liter soda bottle as the base/to hold the water.
Some encouragement that water rockets really do work:
2L Bottle
Mythbusters’ ultimate water rocketDon’t even think about it
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Process: Write-up
You are to write-up your rocket design. The write-up should justify all parts of your rocket. This includes, but is not limited to, body modifications and how much water was used. These should be explained using the physics concepts that you learned during your research.
You may use the form below to organize what needs to be in the write-up.Pre-write Chart
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Beginning1
Developing2
Proficient3
Exemplary4
Drawing
Drawing is incomplete
and unscaled
Drawing is complete
Drawing is scaled
Drawing is scaled and complete
Force Diagra
m
Correctly identifies no
forces
Correctly identifies
some forces
Correctly identifies
most forces
Correctly identifies all
forces
Write-up:How much Water
Fails to explain amount
Explains amount but
does not include law
Explains amount but
does not properly apply law
Explains amount and applies law correctly
Write-up:Body
Alterations
Identifies some
alterations
Identifies all and
explains some
alterations
Identifies and
explains all alterations
Identifies, explains,
and justifies all
alterations
Flight Time
Does not launch
Less than 5 seconds
Between 5 and 10seconds
Over 10 seconds
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Conclusion
Congratulations, Your application of your physics knowledge was superior. With a few more years of school you’ll be ready to save the world…
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Standards Addressed (Physics and Geometry):PH.3 The student will investigate and understand how
to demonstrate scientific reasoning and logic.PH.4 The student will investigate and understand how
applications of physics affect the world. PH.5 The student will investigate and understand the
interrelationships among mass, distance, force, and time through mathematical and experimental processes.
G.12 The student will make a model of a three-dimensional figure from a two-dimensional drawing and make a two-dimensional representation of a three-dimensional object. Models and representations will include scale drawings, perspective drawings, blueprints, or computer simulations.
Additional Resources:How Water Rockets WorkBuilding the Launcher
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