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Why do astronauts in space look like they are floating even though there is still gravity pulling them?
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If you push a wall very hard for one hour and it doesn’t move at all, did you do any work? (Most people get surprised by the answer!)
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When you jump really high on a trampoline, where does all that extra bounce come from?
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A stretched rubber band has secret energy inside it. What happens to that energy when you suddenly let it go and it hits someone’s hand? 😄
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Why can a tiny spider walk on the ceiling but you would fall if you tried the same thing?
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Imagine you throw a ball straight up as hard as you can. At the exact highest point (just for a tiny moment), does it have any energy left? What kind?
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When you rub your hands together very fast on a cold morning and they feel warm — where did that heat suddenly come from?
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A moving bicycle doesn’t need pedaling when going downhill. Who or what is actually doing the work then?
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Why do things feel heavier when you carry them upstairs compared to walking the same distance on flat ground?
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If energy can never be created or destroyed, how did we get all the energy that exists in the whole universe in the first place?
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When you watch a windmill spinning and making electricity far away, what invisible thing is actually pushing those huge blades?
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A magnet can pull a paperclip without even touching it. How is that possible? What kind of force is doing magic from far away?
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Why does a heavy football go farther when you kick it really hard compared to kicking it softly — even though both kicks use your leg?
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When you slide down a slide very fast, part of your energy disappears by the end. Where does it go? (It’s not lost forever!)
- If you and your friend are on ice skates and you push each other at the same time, who moves backward more — the heavier one or the lighter one? Why?