Tomoya H., Jenna G., Kelly D., and Leo R. Everyone Tomoya H., Jenna G., Kelly D., and Leo R.

Question: What is the effect of the weight of the cap on the distance the cap travels? Jenna

❔Hypothesis❔ Our hypothesis is: The more the cap weighs the smaller the distance the cap will travel. We think this because the weight will make the cap heavier which we think means it won’t travel as far. Tomoya

Controlled Variables: The angle of the launcher Place of the Launcher The amount of alka seltzer tablets (1) The amount of the seltzer (20ml) The type of the liquid Wind speed Temperature of the liquid Kelly

Manipulated Variable: The manipulated variable is the weight of the cap. Leo

Responding Variable: The responding variable is the distance the cap travels. Jenna

Alka seltzer tablets (1 per trial) Pennies Seltzer (20 ml) Launcher Alka seltzer tablets (1 per trial) Pennies Seltzer (20 ml) Film Canister Post-Its/Tape Tape Measure Duct tape/Double Sided Tape (If using tape) Syringe Small cup Pen/Pencil Data Table Tomoya

Procedure: 8. Take one alka-seltzer tablet and carefully place it into the film canister that has the seltzer inside. 9. As quickly as you can, snap the film canister cap back onto the film canister. 10. Quickly put the film canister in the launcher and tighten the launcher by twisting the knob to the right. 11. Take cover, and watch the cap travel through the air. Use tape to show where the cap landed. 12. Repeat the steps adding one more penny to the cap each time using double sided tape 13. After , record your data in a data table or graph in feet and inch. 14. Repeat the steps adding one more penny to the cap each time using double sided tape. 1. Collect your launcher, alka seltzer tablets, pennies, seltzer, post its, tape measurer and double sided tape, and syringe. 2. Take the cap off the film canister and place it on your work surface. 3. With double sided tape, stick one penny on the cap of the canister, and set aside. 4. Set the angle of the launcher to 60° 5. Open the seltzer and pour it into a cup 6. Take the syringe and put 20 ml of seltzer into the syringe. 7. Apply pressure to the top of the syringe to release the seltzer into the film canister Kelly

Data Table: 0 Pennies 581 cm 580 cm 555 cm 572 cm 1 Penny 697 cm Manipulated Variable Trial 1 Trial 2 Trial 3 Average 0 Pennies 581 cm 580 cm 555 cm 572 cm 1 Penny 697 cm 643 cm 499 cm 607 cm 2 Pennies 544 cm 573 cm 541 cm 552 cm Leo

GRAPH Jenna

Conclusion/Results: We have concluded that when we added one penny to the cap, the weight was the most balanced out, thus making the cap shoot to a longer distance. When we used no pennies, the cap went a little less farther than the trials with one penny. When we used one penny it went the farthest, and at two pennies, the cap’s distance decreased. When we added the third penny, the cap lost balance during the flight. Tomoya

Additional Questions: Would the results be different if we used a different kind of liquid? 2. How does the type of coin affect the distance the cap travels? 3. Would the the flavor of the seltzer effect the distance the cap travels? Leo

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