Can stacked liquids catch an object that sinks in water?
Open for the projector Present it step by step
Classroom mode
A question for the whole room
One story to open. A room full of ideas to test.
Ready in three steps
- Open the story.Read and try the first pages together.
- Pause for a prediction.At the story’s question, read its choices aloud. Invite a vote and ask, “What makes you think that?”
- Run it. Watch. Wonder.Choose the class’s prediction, run the experiment, and compare what happened with your guesses.
Different guesses are welcome. The experiment gives everyone something to rethink.
Something to put on paper
A one-page prediction and observation sheet. No answers included.
After the experiment: discussion notes
Talk about what happened
- Predict first: if liquid A is denser than B, which one moves underneath while they remain separated?
- What two comparisons are needed to locate an object between two liquid densities?
- Why does shaking help corn syrup dissolve into water while oil can separate again?
Where it shows up in real life
- Oil separating to the top of salad dressing
- Carefully poured layered drinks viewed before their bands blend
- Oil spreading across water rather than sinking beneath it
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