What is plate tectonics? Earthquakes and volcanoes
Plate tectonics: The world as seen from space (flattened out) The continents move around When you look at a map of the world, it seems as though it was always [...]
Plate tectonics: The world as seen from space (flattened out) The continents move around When you look at a map of the world, it seems as though it was always [...]
Molten lava: the beginnings of planet Earth What is the Earth made of? Most of the molecules that smashed together to make the Earth were iron. The smashing together released a [...]
North American environment: The north Most of North America was (and is) just not very good for people to live in. That's why not that many people lived in North [...]
Rocky Mountains The Rocky Mountains stretch all the way from the southern United States north into Canada. They through Utah, Colorado, Wyoming, Montana, and up into Alberta. What we call [...]
Up in the Alps in Switzerland Which mountains are the highest in the world? Practice graphing and see how much higher some mountain chains are than others. The highest peaks [...]
Tertiary period: Large animals evolved like moose Dinosaurs become extinct The Tertiary period begins with the catastrophe that killed off the dinosaurs at the end of the Cretaceous Period, about 65 [...]