# Quick Answer: Will the diver sink or float?

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## How does Archimedes principle apply to the Cartesian Diver?

Archimedes’ principle applies because the Cartesian diver sinks when its density is increased. … As the volume of air decreases, water is taken up into the Cartesian diver which increases the density of the Cartesian diver so it sinks.

## What happens to the density of the diver when the bottle is squeezed?

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.

## What is the purpose of the Cartesian diver experiment?

A Cartesian diver or Cartesian devil is a classic science experiment which demonstrates the principle of buoyancy (Archimedes’ principle) and the ideal gas law.

## What makes a diver sink?

The more water that is inside the diver, the less buoyant it becomes and the diver sinks. When the pressure on the outside of the bottle is released, the compressed air inside the diver expands and this pushes some of the water back out of the diver.

## Why do divers flip off the boat?

Scuba divers roll off boats backwards so as not to dislodge their facemask or regulator (the thing they breathe through). … Because if you know you’re going to rock the boat it’s wise to adopt a safe fall-back position. Jim Dewar, North Gosford. If they tumble forward, they hit their head on the deck.

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## How does Boyle’s law relate to Cartesian diver?

Boyle’s Law describes the relationship between pressure and volume. Increasing pressure on a gas will decrease its volume. When the sides of the diver are pressed, the water is forced into the dropper, decreasing the volume of air in the dropper. This makes it more massive and dense, causing it to sink.

## Will a bottle of 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.

## What is average density?

The mean or average density is the total mass of a region divided by the total volume of that region.