# What happens if we drill two holes at different heights in a plastic bottle filled with water?

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Answer: the water from lower hole will come with high pressure and low pressure with upper hole.

## Why does the water shoot out a different distance from each hole?

The weight of the water in the bottle causing pressure causes the water to shoot out of the lowest hole the farthest. This is because the height of more water above the hole has more weight and creates a greater pressure that the hole that is higher on the bottle.

## How does the water coming out of a hole near the bottom differ from the water coming out of a hole near the top?

A: The water coming out of a hole in the side of a can near the bottom comes out quickly because the water pressure near the hole is bigger than the air pressure outside of the hole, and so there is a net force on a little bit of water that’s passing through the hole.

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## How do you drill a hole in a plastic bottle cap?

Drilling Plastic Caps

To drill the cap, we place it on an old scrap of 2×4 wood. This protects your working surface once the drill gets through the cap. We hold the cap with our gloved hand and then press down on the cap with the drill. It’s a good idea to wear protective goggles if you don’t wear glasses already.

## What happens to the pressure inside the bottle when you squeeze it?

When you squeeze the bottle, the pressure increases. … When you release the bottle, the pressure decreases. This causes the temperature inside the bottle to fall and the water molecules to condense.

## How does the flow velocity change if you increase the size of the hole?

3 Answers. You must also include surface tension into the mix. If you make a really small hole, the water may not flow at all because it’s energy would be sufficiently lower than when it exits the bottle immediately after. … The more water is pushing down on the water near the hole, the higher the jet velocity.

## Why does the water not fall directly to the bottom of the bottle?

When you cover up the lid to the bottle, the water is pulling down but that air up in the top of the bottle is becoming a vacuum. That means “low pressure.” The air pressure outside the bottle is higher, so it actually tries to push into the bottle through the bottom hole. In doing so, it keeps the water in!

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## What will happen when a sand filled plastic bottle is dropped in water it will?

Introducing more sand into the bottle will increase the weight of the bottle and so increase its weight force resulting in it floating lower in the water.

## What happens when you put an empty plastic bottle in the freezer?

When the plastic bottle was in the freezer with the cap on, the sides of the bottle collapsed. … The cold in the freezer cools the air inside the bottle. As the air temperature changes, the air pressure drops and the sides of the bottle collapse.

## Why does the water stay in the cup when turned upside down?

When you first turn the cup upside down, the pressure of the air inside the cup and the air pressure outside the cup are equal. … The pressure of the air outside the cup is now greater than the pressure inside the cup and the card stays in place.

## How do you easily cut a plastic bottle?

Stick an X-Acto knife into the bottle to cut through the plastic. Force the blade into the marked area, and make sure that the edge of the knife has sliced through the plastic entirely. Drag the knife forward by pulling on its handle. Your cutting will feel more like carving as you make your way around the bottle.

## Why must you squeeze and release the bottle to see results?

Why? The squeeze represents the warming that occurs in the atmosphere. The release represents the cooling that occurs in the atmosphere. If the inside of the bottle becomes cover with condensation or water droplets, just shake the bottle to get rid of them.

## Why does Cartesian diver sink?

Squeezing the bottle causes the diver (the eye dropper) to sink because the increased pressure forces water up into the diver, compressing the air at the top of the eye dropper. This increases the mass, and density, of the diver causing it to sink.

## Will a bottle filled with water sink?

Similarly, an empty plastic bottle floats on water. However, when you fill it up with water, the bottle sinks. This is because it is unable to displace that much volume of water. You will also notice that it is easier for an aluminium foil to float in water.