Alfred Wegener

Alfred Wegener was a super curious scientist from Germany who loved to explore and ask big questions about our planet. He was like a detective for the Earth! He studied weather, ice, and even what the ground was made of.

But his most famous idea was about how the continents, like Africa and South America, might have moved around over millions of years. He thought they were once all stuck together like a giant jigsaw puzzle!

Alfred noticed that the shapes of continents on opposite sides of the ocean looked like they could fit together, kind of like how you can fit two puzzle pieces together. He also found similar fossils (old plant and animal remains) and rocks on different continents that were far apart. He wondered if these continents had been neighbors a super long time ago.

He called his idea 'continental drift' because he believed the continents were slowly drifting apart.

When Alfred first shared his idea, many scientists thought it was a bit too wild! They couldn't imagine how huge continents could possibly move. It took many, many years, and lots of new discoveries, for scientists to finally agree with Alfred.

Today, we have a much bigger idea called 'plate tectonics' that explains how the Earth's surface is made of giant moving plates, and Alfred Wegener was the first one to really get us thinking about it!

Alfred wasn't just a thinker; he was an adventurer too! He went on exciting expeditions to Greenland, which is covered in ice. He wanted to study the cold air and how the ice moved. He and his team were the first people to spend a whole winter on the Greenland ice sheet and even drilled into the ice to learn about Earth's past. These trips helped him understand our planet even better.