Bernoulli’s pipe!

Your breath vs. gravity

Gravity – or the Earth’s gravitational force – pulls all objects downward towards the earth. This force also makes sure that you land on the ground when you jump up in the air. The force that opposes a falling object is called buoyancy. With the Bernoulli’s pipe, it’s the air coming out of the tube that pushes the ball upwards.
But why does the ball follow the air flow even when you move the pipe? The answer to this question was discovered by the Swiss scientist Daniel Bernoulli (1700-1782). According to Bernoulli’s principle, air pressure always decreases where the air flows faster. The lower air pressure creates suction.

For this experiment, we have used the PhänoMINT Bernoulli’s pipe.

Build your own rocket!

This experiment is based on an acid/base reaction. When the vinegar and baking soda react produce carbon dioxide gas. This gas generates pressure inside the bottle, push the cork out and launch the rocket into sky.

Material: 1l bottle, 3 straws, 1 cork, 80gr baking soda, 200ml vinegar, and duct tape.

Steps:

• Fix 3 straws to the bottle using duct tape.
• Add the vinegar to the bottle and cork it.
• Add the baking soda onto a paper towel. Roll the paper towel and keep it for later.
• Choose a launch site outside. Drop the paper tower inside the bottle and add the cork. Turn the bottle over and stand back!

For security reasons, this experiment requires the presence of an adult.