Imagine you're on a boat sailing away from the shore, eventually, you can no longer see the land, just the top of a ship. That’s because Earth is round! Like a ball, Earth curves around, so we can’t see everything at once.
Long ago, people noticed that when ships sailed into the distance, they disappeared bottom-first, like going over a hill. This helped early scientists guess that Earth wasn’t flat, it was more like a giant sphere.
Examples
- A ship sailing away disappears bottom-first over the horizon, like going over a hill.
- The sun rising and setting is because Earth rotates around its axis.
Ask a question
See also
- How To Use An Abacus?
- How Does Researchers find evidence of Neanderthal dentistry Work?
- What is Temperatures between 60°C and 75°C?
- What is 9 calories per gram?
- How Does France’s Darkest Hours: When the SS Publicly Executed Resistance Fighters Work?
Discussion
Recent activity
Categories: Science · Earth shape,ancient science,astronomy