Date Lesson 6: Evaluating Vehicle Design: Looking at Rubber Band Energy
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Transcript of Date Lesson 6: Evaluating Vehicle Design: Looking at Rubber Band Energy
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DateLesson 6: Evaluating Vehicle Design: Looking at Rubber
Band EnergyQuestion: How can you use rubber band energy
to move a vehicle?Hypothesis:Plan/ Observations: Record Sheet 6-A (2
pages)Conclusion:
Don’t forget your goggles!
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DateLesson 7: Testing the Effects of Rubber Band Energy
Question: How will the number of turns in the rubber band affect the distance the vehicle travels?
Hypothesis: Plan/ Observations: Record Sheet
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Lesson 7 Photos
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Lesson 7 continuedConclusion/Reflection:Next Steps/ New Questions:
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DateLesson 8: Evaluating Vehicle Design: Looking at Friction Question: How does friction affect the motion of your
vehicle? Hypothesis: Plan/ Observations: Record Sheet 8-A (3 sheets) Card One: Card Two: Card Three: Conclusion/Reflection: Friction is the force that resists
movement between two objects that are touching. It slows down movement.
Next Steps/ New Questions:
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Date Lesson 9: Designing and Building a Vehicle with a SailQuestion: What happens when you attach a sail
to your vehicle?Hypothesis: Plan/ Observations (Write and draw):Conclusion/Reflection:
Next Steps/ New Questions:
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Date Lesson 10: Testing the Effects of Air Resistance on a Vehicle’s Motion
Question: What is air resistance? How does air resistance affect the motion of a vehicle with a sail?
Hypothesis: Plan/ Observations: Chart
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Lesson 10 continued
Conclusion/Reflection: Air resistance is the force of friction on a vehicle as it moves through the air. It opposes a vehicle’s motion and slows it down. Engineers refer to air resistance as drag. Designs that minimize drag are known as aerodynamic (able to move through the air with as little air resistance as possible). For example, many automobile shapes are curved without sharp corners.
Next Steps/ New Questions:
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DateLesson 11: Building a Propeller-Driven VehicleQuestion: What do you know about
propeller-driven vehicles? How can you build a propeller-driven vehicle?
Hypothesis: (Brainstorm and draw).
(Show pictures on next slide.)
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Examples of Propeller Driven Vehicles
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Lesson 11 Technical Drawing
SI pg. 48
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Propeller-Driven Vehicle Pieces
6 Yellow Connectors6 Green Rods6 Red Connectors2 Orange Connectors1 Blue Rod3 Red Rods4 Grey Rods4 Small Wheels4 Tan Connectors1 White Connector4 Yellow Rods
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Propeller-Driven Vehicle
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Propeller-Driven Vehicle
Front View Top View
Side View Rear View
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Lesson 11 continuedObservations: Chart
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Lesson 11 continued
Conclusion/Reflection: Propellers create a force that moves airplanes and boats forward. Even when an airplane is on the ground, the force from the spinning propellers enables it to taxi on and off the runway.
Next Steps/ New Questions:
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DateLesson 12: Analyzing the Motion and Design of a Propeller-Driven VehicleQuestion: How will modifying the propeller driven
vehicle affect its performance?Record Sheet 12-A (2 sheets) All parts of the
scientific method are embedded in the Record Sheet.
Conclusion/Reflection:
Next Steps/ New Questions:
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DateLesson 13: Looking at CostQuestion: How can you modify your propeller-driven vehicle
to make it more cost-effective?Hypothesis: Plan/ Observations: Record Sheet 13-A
Conclusion/Reflection: Cost-effective is the ability to produce the best results for the least amount of money.
You can reduce vehicle cost by: -taking off the big pieces that cost a lot-replacing larger wheels with small wheels-taking off fancy pieces that are just for looks-reducing the number of pieces.Next Steps/ New Questions:
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DateLesson 14-16: Our Final Design Challenge
Question: How can you design and refine a vehicle to meet a specific requirement? (See Design Challenge)
Hypothesis: Plan/ Observations: Record Sheet 14-AConclusion/Reflection:
Next Steps/ New Questions: (Reading Selection SI p.60-61)
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Design Challenge Presentations
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Dueling Flipchart Game1. A push or a pull ________________________2. Energy in motion is called _____________ energy.3. Force that resists movement between two objects that
are touching _______________________4. The force exerted by a stretched object, such as a
spring 5. An original model of a design _______________________6. A detailed plan or drawing that shows how something is
designed ____________________________7. Stored energy is ______________ energy8. How does friction affect motion? ________________________9. The tendency that any moving object has to keep going
unless something stops it. _______________________10. _____________: An object at rest stays at rest; an object in
motion stays in motion
force
friction
kinetic
prototype
blueprint
tension
potentialSlows down/ stops motion
momentuminertia
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Newton’s Laws of Motion
Three laws that describe how objects move in relation to the forces acting on them.
1. An object in motion tends to remain in motion, and an object at rest tends to remain at rest (Inertia).
2. To move a mass, you have to have force. Force equals mass times acceleration.
3. Action/ Reaction: For every action, there’s an equal and opposite reaction.