# Can You Build Boat Out Of Foil That Will Float?

## How do you make a boat out of aluminum foil that will float?

Directions

1. Cut a piece of tin foil 5 x 6 inches.
2. Fold up the sides of the boat so it will not sink and hold a cargo of pennies.
3. Place the boat in the bowl of water.
4. See how many pennies your boat can carry before it sinks.
5. Have some friends over and try this experiment with them.

## Does aluminum foil boat float?

The foil boat has less density because it is spread out and filled with air. Things float when they have less density than water, but sink when they have more. It’s the same thing that happens when an anchor is placed in a boat.

## What is the best tin foil boat design?

The best designs are flat barges with small sides. The placement of pennies also makes a difference in the number held. The record for one sheet of 8″ x 12″ foil is around 280 pennies.

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## Can aluminum boats sink?

The weight of the water that is pushed out of the way is equal to the lifting force on that object. In this hydrodynamics science project, you will make little spherical “boats” out of aluminum foil and find out at what point they can’t push away enough water, causing them to sink.

## What is the best shape for a boat to float?

A flat bottom is best, with sides to keep out the water and a large surface area that touches the water. Boats with lots of surface area are very wide, with lots of space inside. When pennies are added, the boat will float if the combined density of the pennies and the boat is still less than that of the water.

## How many pennies does it take to sink a tin foil boat?

The round boat ended up sinking with 267 pennies in it. We switched and filled the rectangle tin foil boat, which ended up sinking with 185 pennies in it.

## What makes the boat continue to float despite the presence of the coin?

Why the Ship Floats Archimedes’ buoyancy principle states that buoyant force — what keeps the ship afloat — is equal to the weight of water that is displaced when the ship enters the ocean. The displaced water around a coin weighs less than the coin, so the coin will sink.

## Which boat shape holds the most weight?

Wide, flat-bottomed boats will hold the most weight.

## Why does Aluminium foil boat float and the folded foil sink?

The density of aluminum is 2.7 g/ml. The density of water is 1 g/ml the air trapped in the ball and the foil boat makes the density of the metal boat less that 1 g/ml. so the boat and ball floats. When you remove the air from the foil ball the density of the foil becomes more that 1 g/ml so the foil now sinks.

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## How many pennies can a paper boat hold?

Depending on the type of paper used, the boat may hold from 30-40 pennies before the wet paper collapses and the boat sinks.

## What is the most buoyant shape?

The chances are that the flat-bottomed shape you made was the most buoyant, and that’s because it has a larger surface area than the other shapes. More of the foil was in contact with the water, which means that there was more water underneath it pushing up on it, so it could support more weight before it sunk.

## How do boats hold so much weight?

If the boat weighs less than the maximum volume of water it could ever push aside (displace), it floats. But it sinks into the water until its weight and the upthrust exactly balance. The more load you add to a boat, the more it weighs, and the further it will have to sink for the upthrust to balance its weight.

## Why does a boat not sink?

The air that is inside a ship is much less dense than water. That’s what keeps it floating! As a ship is set in water, it pushes down and displaces an amount of water equal to its weight.

## Does crumpled aluminum foil sink?

The crumpled wad should float and the compact, folded aluminum object should sink. Water has a density of 1 gram/milliliters and a solid piece of Aluminum has a density of 2.7 gr/ml. If the density of an object is lower than 1 or that of water, then it will float.

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## How do you increase the buoyancy of a boat?

Ways to Add Buoyancy to a Jon Boat