Back to School STEM Activity: Balloon-Powered Car Challenge (BTS17) | Middle School Physics Lab

? BACK TO SCHOOL STEM ACTIVITY: BALLOON-POWERED CAR CHALLENGE (BTS17)

2-Page Printable STEM Packet | Print-Ready PDF Format

Put Newton's Laws of Motion into high-speed action! The Balloon-Powered Car Challenge (BTS17) challenges middle school student teams to act as automotive engineers, building a rolling vehicle out of bottle caps, straws, index cards, and skewers that is propelled purely by balloon air thrust.

Students explore Newton's Third Law of Motion (Action/Reaction), friction reduction, pneumatic thrust, chassis alignment, and average velocity math (v = d / t)!

? WHAT'S INCLUDED IN THIS 2-PAGE PACKET?

• ? Page 1: Student Mission Card & Blueprint: Real-world automotive engineering and clean-energy propulsion scenario. Clear material constraints box (1 balloon, 2 straws, 2 skewers, 4 bottle cap wheels, card base, tape, flat track testing). Dedicated Chassis, Axle & Nozzle Propulsion Blueprint sketching zone for planning axle housings, thrust vectors, and wheel alignment.

• ? Page 2: Testing Log & Scientific Reflection: Structured Data Testing Table (track chassis modifications, linear distance in cm, and drift offset across 3 trial runs). Applied Math Connection (calculate average vehicle velocity in cm/s using v = d / t). Physics reflection questions analyzing Newton's Third Law, rotational friction, and mass vs acceleration (F = ma).

? CORE STEM SKILLS COVERED:

• Newton's Laws of Motion (Action/Reaction & Force/Mass/Acceleration)

• Automotive Engineering, Axle Mechanics & Friction Reduction

• Data Logging, Metric Distance Measurements (cm), Time Tracking (s), and Velocity Math

• Iterative Prototyping and Vehicle Alignment Tuning

? WHY TEACHERS LOVE THIS RESOURCE:

• Unbeatable Physics Demonstration: Makes abstract concepts like thrust and action/reaction forces immediately tangible!

• Low-Cost Recycled Materials: Uses plastic bottle caps, straws, skewers, index cards, and balloons.

• Clean 2-Page Layout: Keeps student schematics, velocity calculations, and physics reflections organized on a single front-and-back printable sheet.

• Format: High-resolution, print-ready PDF format (2 Pages).

Target Grades: 6th, 7th, 8th / Middle School

Subject Area: Physical Science, Physics, Forces & Motion, Automotive Engineering, Back to School Activities

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