Super+Submarines!

= Does changing the amount of air and water inside a bottle submarine affect its buoyancy? =

By Eric and Brayden = __Task 1: Answer these Questions__  =

__1. What parts make a submarine work?__ __first a ballast tank, you fill them up with either water or air. If it is filled with air the__ __submarine rises to the surface. If it is filled with water, it sinks to the sea bed.__ __navigation system helps the pilots to not crash into stuff. most of the time they don't even know where there going! engine along with the propella helps the submarine to move under water. oxygen tank lets the people inside breath.__

__2. How does buoyancy affect the direction a submarine moves?__

__Task 2: List your independent, dependent and controlled variables:__
__1. Independent variable:__ amount of water amount of air __2. Dependent variable:__ buoyancy __3. Controlled variables:__ bottle size = __Task 3: What is the hypothesis for your experiment?__  =

= __Task 4: What equipment do you need for your experiment?__  = = __Task 5: List all steps in the method of your experiment (try and include a diagram or video that helps explain):__  =
 * 2-liter soda bottle x1
 * Water bottle, standard size, approximately 500-700 mL x1
 * Razor blade or knife
 * Drill with a 3/32-inch drill bit; be sure to confirm, but this size should create a hole that will fit the paper clip you'll be inserting
 * Scissors
 * Pen or needle
 * Needle-nose pliers
 * Large paper clips x2
 * Metric liquid measuring cup
 * Permanent marker
 * Chopsticks
 * Stiff ruler
 * Rubber bands x3
 * Waterproof sealant (such as silicone)
 * Bathtub (or pool), filled with water
 * Lab notebook

__**Task 6: Observation and discussion**__

Note down what you noticed as you did each experiment. Try and include an image or a video or photos of your experiment.

__Experiment 1 Observations:__

__Experiment 2 Observations:__

__Experiment 3 Observations:__

= __Task 7: Results__ =

Take a screen shot of your results table. Upload it and put it here:

__Task 8: Conclusion__
Write a statement that says whether your hypothesis was wrong. If you were wrong, why were you wrong?