If you have a school science fair coming up and are looking for a fairly simple science project, try making a submarine. You can use a soda bottle and a few other items to create your very own submersible vehicle. Since most of the required materials are common household items, this is going to be a fairly inexpensive project. Using a drinking straw or narrow plastic tube, you can also control how deep the submarine sinks during your demonstration.
Things You'll Need
- Clean 20-oz. soda bottle
- Waterproof tape
- 24 pennies
- Narrow plastic tubing or bendable drinking straw
- Plastic wrap
- Aquarium or tub of water
Drill a hole into the bottle cap. The hole should be wide enough for the plastic tubing or straw to fit snugly. Drill three holes along the length of the bottle about 1 to 1.5 inches apart. The holes should form a line.
Make three stacks of pennies. Use four pennies for one stack, eight for the second stack and 12 for the third stack. Wrap each stack in plastic wrap.
Tape the stacks of pennies along the same line as the holes you drilled earlier. Affix the tallest stack near the hole by the bottom of the bottle, the middle stack near the center hole and the shortest stack near the hole closest to the bottle top.
Feed the plastic tubing or straw into the bottle through the hole you made in the bottle cap. Use the tape to secure the plastic tube and create a tight seal around the hole.
Place the submarine into an aquarium or tub filled with water; the holes you drilled will let water into the submarine, causing it to sink. When you want the submarine to surface, blow into the plastic tube. The air pressure will force the water back out through the holes.
- Photo Credit BOTTLE CAPS image by SKYDIVECOP from Fotolia.com
How to Make a Plastic Bottle Submarine
It is believed that the first underwater submersible was created around 1620 and powered by oars. Since then, submarines have made great...
How to Build Your Own Submarine
Ask a submariner what he enjoys most about being in an underwater environment, and he'll tell you about exploring new places and...
How to Build a Toy Submarine
Making a toy submarine is a great craft project that will use recycled materials. Bottles are roughly submarine shaped already, so half...
How to Make a Homemade Submarine for Science Class
Building a homemade submarine is a school project that teaches principles of gravity, pressure, friction and buoyancy. It can also be an...
How to Build a Submarine for a Kids Science Project
Submarines work on principles of buoyancy. They don’t sink completely because there is still air trapped inside the submarine, allowing the pilots...
How to Make a Submarine With Plastic or Cans
They key to making a submarine is to remember that a submarine can descend deep below the water and then rise back...