What is flint good for? Stone tools
What is flint? Flint is a sedimentary rock made out of an igneous rock. What is flint made of? It's pretty complicated. Billions of years ago, silicon and oxygen atoms [...]
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09, 2017
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08, 2017
Earthquakes and algae – the planet Earth
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 [...]
27
07, 2017
Ibn Sina – Islamic medicine
Where ibn Sina came from: Uzbekistan Ibn Sina and the Samanids in Uzbekistan Ibn Sina (known to Europeans as Avicenna) was a scientist. He was born about 980 AD in the north-eastern part of [...]
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06, 2017
What are sedimentary rocks? Shale and limestone
Sedimentary rocks: Limestone cliffs in Saudi Arabia Before sedimentary rocks When the Earth was first forming, about six billion years ago, there weren't any sedimentary or metamorphic rocks. The only [...]
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06, 2017
What is erosion? Geology
Erosion of a cliff in Canada Igneous rocks came first When the Earth first formed, about four and a half billion years ago, it was all liquid rock and liquid [...]
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06, 2017
Different kinds of rocks
Granite rock There are three different kinds of rocks on Earth, and they form in very different ways. The first kind is igneous rock, which means "fire rocks". Igneous rocks [...]
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06, 2017
Silica and sand castles – Science projects – Chemistry
Sand castle by the ocean If you want to see some real silica, go to the beach or to a playground with a sandbox. Beach sand (which is also what [...]
