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Forces and Motion Science Fair Project

Making Metal Float

Making Metal Float | Science Fair Projects | STEM Projects
Have you ever wondered why a steel ship can float, but a steel nail sinks? Let's explore the science behind this phenomenon. We'll conduct two experiments to understand why metal can float.


The hypothesis is that metal can float if it is not as heavy as the amount of water it pushes away.

Method & Materials

You will conduct two experiments. The first experiment will involve pushing water away and the second experiment will involve floating versus sinking.
You will need a big jar or bowl, a soda bottle, water, a marking pen, a bucket, aluminum foil, and a hammer.


The experiments showed that the aluminum boat floated because it was not as heavy as the water it pushed away. The aluminum ball sank because it was heavier than the water it could push away. This observation stands out because it shows that the weight of the metal is an important factor in determining whether it will float or sink.

Why do this project?

This science project is interesting and unique because it explores the science behind why metal can float.

Also Consider

Experiment variations to consider include testing different types of metal and testing different shapes of metal.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related videos

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
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