A cruise ship stays afloat because it is designed like a giant boat, and boats stay on water by using buoyancy. Buoyancy is when something pushes up against the water, keeping things from sinking, just like how a balloon floats in air! Imagine you are floating in a bathtub with a lot of toys around you, even though there's a lot going on, you still float because your body and the toys displace water. That’s what happens on a cruise ship: it displaces so much water that it can hold many people without sinking.
Examples
- Floating in a bathtub with your toys is like being on a cruise ship, you displace water and stay afloat.
- A balloon floats up because it pushes air out of the way, just like a cruise ship pushes water out of the way to float.
- Your boat can hold many friends without sinking, that’s how ships work too.
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See also
- How Do Ships Float Even Though They’re Heavy?
- How Do Bridges Stay Upright Without Being Anchored?
- How Do Bubbles Pop and Why Does It Feel Good?
- How Do Bubbles Form and Pop?
- How Do Soap Bubbles Form?
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