Physics lab work - Take an empty water or soft-drink

Physics lab work

Could you tell me what to say in the videos? Answering the questions below.

Take an empty water or soft-drink container (plastic or aluminum) and punch three round holes in the side, one near the bottom, another halfway up the side, and the third near the top. Hold it under a faucet over a sink and run water into it just fast enough to keep it full as water runs out through the holes.

Clearly Explanation in the video:

What is different about the streams of water coming from the three holes?

What does that tell you about the pressure inside the container at the levels of these holes?

PART B

Demonstration:

Fill a glass with water, hold a piece of cardboard or stiff paper on the top with your hand, and invert it the glass. Remove the cardboard by Carefully slide the cardboard away from the opening. You might want to do this over a sink. Make sure there is a good seal all around the top of the glass and cardboard before you turn the glass over.

Explanation on the video:

When you remove your hand, why doesn’t the water fall out of the glass?