Need help please. VERY important

Okay, im not sure if this allowed, but ill ask anyways.

Okay i have an assignment and i need help.

I need to make a little model of a submarine that will sink, then rise back to the surface.

Any idea, please also I need an idea that has materials that i am able to get!

THx for your help.

 

use simple science tools. if you rig something up in the back (like a water mill) say going down, then put one on the front going up. This will capsize it and cause it to sink. and then have a switch to reverse the motors.


You'd need)

two c batteries
4 motors
lots of popsicle sticks
glue gun


use your imagination... although.. you've prolly already had to do this.. it's kinda old.. locka?