volcanoes

/Tag: volcanoes
21 09, 2017

What is plate tectonics? Earthquakes and volcanoes

By |2019-08-16T08:59:53-07:00September 21st, 2017|Geology|0 Comments

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 like that - North America on top of South America, Europe north of Africa, Australia off at the bottom right. But really all of the dry land on Earth moves [...]

19 08, 2017

What’s the atmosphere? Weather science

By |2019-02-05T05:47:27-07:00August 19th, 2017|Physics|0 Comments

Earth's atmosphere: Did the Earth look like this right after it cooled down? What is the atmosphere? The atmosphere is the air that is wrapped all around a planet. Read more about planets Why is the sky blue? All our physics articles Do all planets have atmospheres? Not all planets have atmospheres. In order [...]

27 07, 2017

Ibn Sina – Islamic medicine

By |2019-09-16T20:24:05-07:00July 27th, 2017|Islam|4 Comments

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 the Abbasid Empire. That was in the kingdom of the Samanids. (It's modern Uzbekistan.) Who were the Samanids? Medieval Islamic science All our medieval Islam [...]

13 07, 2017

Who is Hephaistos? Ancient Greek gods

By |2019-09-17T10:59:57-07:00July 13th, 2017|Greeks|2 Comments

The Greek god Hephaistos' forge is a volcano. What is Hephaistos god of? The Greek god Hephaistos (heh-FAIS-toss) is the blacksmith god, the god of volcanoes and hot fires and smelting metal ore to make iron. People said he lived inside volcanoes, and when they erupted it was because Hephaistos was moving around. More about volcanoes Iron and [...]

6 07, 2017

Ancient Greek climate, plants, and animals

By |2019-09-05T06:43:36-07:00July 6th, 2017|Greeks|39 Comments

Ancient Greek climate: The island of Rhodes Good fishing Fishing was very important to early Stone Age people, and fishing is probably what brought the first people to Greece. No part of Greece is more than about forty miles from the sea: a couple of days walking. So Greece was a great place [...]

26 06, 2017

What causes volcanoes? Geology

By |2018-04-21T11:56:42-07:00June 26th, 2017|Geology|0 Comments

Volcano erupting Volcanoes are places where the plates of the Earth's surface have cracks in them, so that the very hot melted rocks that are under the tectonic plates bubble up to the surface. We call the hot melted rocks magma. The magma is under a lot of pressure inside the Earth's plates, [...]

26 06, 2017

What is quartz? Igneous rock

By |2018-09-06T07:27:12-07:00June 26th, 2017|Geology|0 Comments

What is quartz? A chunk of white quartz What is quartz made of? Quartz is an igneous rock made out of molecules of silicon and oxygen atoms held together in a crystal pattern. All of the silica and oxygen that make quartz came originally from the insides of stars, and it shot out [...]

26 06, 2017

What are igneous rocks? Volcanic stone

By |2019-09-10T05:42:47-07:00June 26th, 2017|Geology|0 Comments

Igneous rocks: Obsidian tools What does "igneous" mean? Igneous means "fiery", and igneous rocks are rocks that were made by heating them up in a fire. Usually that fire is the big fire inside the earth, under the earth's crust. The first scientist who identified this kind of rock was ibn Sina. He [...]

25 06, 2017

What is basalt? Igneous rock

By |2019-02-10T14:53:51-07:00June 25th, 2017|Geology|0 Comments

Where does basalt come from? Basalt is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes, so it's one kind of igneous rock. Igneous rocks Volcanoes All our geology articles What is basalt made of? Early Stone Age basalt choppers from Olduvai Gorge (Tanzania) When the lava cools [...]