Goal of Activity: To create hypotheses and participate in a science experiment to answer the question "How much water is in an apple?"
Skills Targeted: scientific reasoning, scientific method, following an experiment protocol.
Apple theme activities don’t have to be limited to art projects for younger children. There are a number of apple theme science activities that you can do with older children, too.
How Much Water is in An Apple?
Apples, like many other fruits, have a high water content. The following experiment can help your child not only visualize, but also measure, exactly how much water is in an apple.
- A food or postal scale
- Elastic band or a piece of string
- Apple Dehydration Log
- Start the activity by talking about what your child knows about the taste of apples. Different varieties have different flavors, but what do they have in common? (They’re all juicy.)
- Cut the apple into quarters or eighths and remove the seeds.
- Weigh each of the apple pieces on the food scale and note the weight on the Apple Dehydration Log, along with a hypothesis of what is going to happen as the pieces of apple are left open to the air.
- Wrap an elastic band around the apple pieces or tie a piece of string around them. Then, find a place to hang them up to dry out. Note: Putting the apple on a paper plate/paper towel won’t let apple slices dry out evenly.
- Weigh the apple pieces again in two days, note the weight in the log and rehang to keep drying.
- Continue weighing the apple every other day for the rest of the week or until the weight no longer changes.
- Add the beginning weights for all the apple pieces together. Then add the final weights together. Subtract the final weight from the beginning weight. Ask: What’s the difference? How many ounces of the apple weight was water?
- Ask your child to write that information on the Apple Dehydration sheet to answer the question: How much water is in an apple?