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Food Science Science Fair Project

How Much Water is in an Orange?

How Much Water is in an Orange? | Science Fair Projects | STEM Projects
We're going to find out how much water is in an orange! We'll use a kitchen knife, paper plate, aluminum foil, and a weighing scale to measure the weight of the orange before and after drying it.


The hypothesis is that there will be 50% or more water in an orange.

Method & Materials

You will weigh the orange, cut it into thin slices, spread the slices over the paper and aluminum foil, and keep it in a warm place until it is fully dry.
You will need an orange, a kitchen knife, a paper plate, aluminum foil, and a weighing scale.


We found out that an orange is 81% water! This is an interesting observation because it shows that oranges are mostly made up of water.

Why do this project?

This science project is interesting and unique because it shows how much water is in an orange, which is something that many people don't know.

Also Consider

Experiment variations to consider include using different types of oranges, such as navel oranges or Valencia oranges, or using different drying methods, such as using a dehydrator or an oven.

Learn more

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

Related video

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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