Something unknown is hidden inside this black box. You can interact with it in different ways, but you can't see it. Can you figure out what it is by observing how it responds?
Start investigating to record observations...
Based on your observations, what object do you think is hidden inside?
This is exactly how scientists study things they can't directly observe! Whether it's the inside of a star, the behaviour of subatomic particles, or the structure of DNA, scientists interact with their subject in controlled ways and observe the responses.