5. Alka Rockets
To design a paper rocket
propelled by alka seltzer and water to demonstrate Newton's third law
Decorate the index card. This will form the body of your rocket.
- Roll the index card into an 8-inch-tall
tube. Slide an empty, film canister into the tube so that the canister
opens at one end of the tube. Securely tape the paper tube to the canister.
You do not want these two parts to separate.
- Now tape the 8-inch-long seam of the
- Cut two triangular, paper fins and tape
them onto the rocket.
- What is the function of the rocket fins?
- Make a small paper cone and tape it to
the top ofthe rocket if you would like a nose cone.
- What is the function of the nose cone?
- Hold the rocket upside down and add water
to the canister to one-quarter full.
- Add half a tablet of alka seltzer to
the film canister and
- quickly snap on the lid.
- 1 Place the rocket on the ground, lid
down. Stand back and count down while you are waiting for launch!
- How high did the rocket go?
- What happened when the alka seltzer was
added to the water?
- What action happened inside the film
- What was the reaction of the rocket?
- Experiment using different amounts of
water or alka seltzer to see how it affects the height of the rocket.
- Experiment to see how the weight of the
rocket affects the height it travels keeping the amount of water and
Alka Seltzer constant each time.
What is the best combination of alka seltzer
and water to produce the maximum launch height? What is your evidence?
4. Edible Rocks
6. Moon Archeology