Where are the Alps? Mountains in Europe
The Alps Where are the Alps? The Alps are a long row of mountains dividing southern Europe from northern Europe. France and Germany are on one side of the Alps, [...]
25
06, 2017
25
06, 2017
Triassic period – pine trees and pterodactyls
A turtle in the desert During the Triassic period (about 248 to 199 million years ago), most of Earth's land continued to stick together in one big supercontinent, Pangaea. Because [...]
25
06, 2017
Tertiary period – mammals and mountains
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 [...]
24
06, 2017
What happened in the Cretaceous Period?
Volcano erupting When was the Cretaceous period? During the Cretaceous period, beginning about 145 million years ago, the continents continued to drift away from each other. Plate tectonics Back to [...]
23
06, 2017
What happened in the Archaean Eon?
Archaean Eon: A volcano erupts out of the water The beginning of the Archaean Eon After the end of the Hadean Eon is the beginning of the Archaean Eon. That's about [...]
20
06, 2017
What is obsidian? Stone tools
Obsidian spear point, one of many obsidian tools from New Mexico (National Park Service) Where does obsidian come from? Obsidian is a kind of volcanic glass. It is shiny and [...]
2
06, 2017
What is sulphur? Atoms, elements, chemistry
Diagram of a sulphur atom Sulphur atoms fall near the middle of the scale: they are heavier than silicon but lighter than iron. Every atom of sulphur has 16 protons [...]
2
06, 2017
Steam and water – Simple Science – Chemistry
Swimming in natural hot springs in Iceland When water gets very hot, it boils and turns into steam. This happens at 212 degrees Fahrenheit or 100 degrees Celsius. The water [...]
29
05, 2017
Natural Selection – Evolution and Biology
The feet of a person with six toes on each foot Whenever protons and electrons bump into each other, or atoms bump into each other, or molecules bump into each other, [...]
29
05, 2017
What are proteinoids? Thermal proteins – Biology
Thermal proteins seen through a microscope Around four billion years ago, some of the amino acid molecules that were on the planet Earth began to join together into bigger molecules [...]
