2nd Quarter Independent Study The Air Car 2nd Quarter Independent Study

1934

1932 Helicron at Lane Motor Museum

*** http://www.youtube.com/watch?v=8Dv-gl6RCGc&safety_mode=true&persist_safety_mode=1&safe=active https://www.youtube.com/watch?v=fGu-HD3bmlM http://www.youtube.com/watch?v=W7h97PfqXl8&feature=related&safety_mode=true&persist_safety_mode=1&safe=active

ATTENTION!! It is strongly recommended each student obtain project information from the available handout (on my website) and NOT by word-of-mouth. WRONG INFO

GOAL 1:Using the instructions provided, design and build an air car that will travel 30 feet and pass through a designated target area.

Materials list Electric motor Propeller 9V battery clip One wire lead with two alligator clips

Materials list Four wheels 1 3/8” diameter with 3/32” tread width 18” lengths of 1/8” diameter dowel rod. Four straws 9/64” diameter X 5” length.

Supplies YOU need to bring in: Appropriate size box to store your car and supplies in A box for the body of your car. The box should be LESS THAN 8 inches on any given side. 9-volt batteries (2 is recommended) DO NOT USE SUNBEAM BATTERIES!!!

The motor may be connected to a battery however you choose to do so. Construction requirements The car presented for the final design must include the electric motor, propeller, wheels and dowel rod (as axels) provided in class. The motor may be connected to a battery however you choose to do so. Any type of tape or glue may be used in the construction of the car.

The following items may NOT be used in the construction of the air car: Legos, K’NEX or parts from any other construction sets. Any parts from a car “kit” (e.g. CO2 car) Any parts from any type of toy car or model car

Demonstrating Your Car Five attempts to demonstrate your car. Attempts 1- 3 are FREE. Attempt 4 costs 5% of grade 10 points Attempt 5 costs 10% of grade 20 points

Attempt 1 Attempt 2 Attempt 3 Attempt 4 Attempt 5 100 points 90 points   Attempt 1 Attempt 2 Attempt 3 Attempt 4 Attempt 5 Air Car travels 30 feet through 3 foot target area. 100 points 90 points 80 points Air Car travels 30 feet through 6 foot target area. travels 30 feet through 6 foot target area. 70 points 60 points travels 30 feet. 50 points travels 20 feet. 40 points does not meet minimum performance or construction standards. 30 points

IMPORTANT NOTICE If on the scheduled day the project is due a student is absent due to a field trip, in-school performance, out of school trip, etc. then the student must demonstrate the car for a final grade the day before.

IMPORTANT NOTICE If a student is on a preplanned absence (i.e. vacation, surgery) the day the project is due then the car must be demonstrated the last day the student is in school before the absence begins.

IMPORTANT NOTICE If an unplanned absence (i.e. illness) occurs on presentation day, the project will be presented on the students’ first day back from the absence. Students may need to make alternate transportation arrangements for presentation before or after school.

Goal #2: Students will complete an in-class journal of the engineering design process while completing the project.

Journal Minimum of 4 practice trials with teacher’s signature and journal entry Sketch of final design Sequence of energy conversions (flow chart)

Practice trials Must be witnessed by teacher and initialed on your paper BEFORE you start your next trial! Journal of each trial will include the following: What worked? What didn’t work? What are you going to change?

Sketch of final design Must include the following: Include a side, top and bottom view of the car. Measure and label the length, width, and height of the car in centimeters Label ALL THE PARTS of the car in the sketch

Kinetic Heat There is friction between the ball and the surface. Sound The ball emits sound as it moves.     Potential Gravitational The ball starts at the top of the hill.   Kinetic Mechanical The ball begins rolling down the first hill.   Potential Gravitational The ball gains gravitational energy as it rolls up the smaller hill.   Kinetic Mechanical The ball begins rolling down the second hill.       Kinetic Heat There is friction between the ball and the surface. Kinetic Sound The ball emits sound as it moves.

Extra credit options You may earn up to 5% extra credit. Locating a recent scientific article (no more than 5 years old) and complete Science in the News write up. The article may be about any of the following: science of air cars or fan cars, Ions, Ionic Bonding, Balancing Equations, Classification of Matter, Chemical Reactions, Chemical or Physical Properties. (+5%)

Project Schedule Science Article and write up for 5% bonus December 8th All supplies needed for the project due and building starts December 1st in class Final trial due by December 8th by 3 PM