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35 Results for "volcano"

"volcano" Stuff:

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Some volcanoes erupt explosively, like opening a shaken soda bottle, because their magma is full of gases.
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If you marked every active volcano in the world on a map, you'd start to notice a pattern. Most of the world's active...
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Most volcanoes form along plate boundaries. But some of the world's largest and most active volcanoes are found far f...
Reading

Find out what causes volcanoes to erupt and how scientists study them.
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Jim is fascinated with volcanoes. He wants to know why some volcanoes erupt explosively, and how he might be able to...
Reading

Visit a scientist's lab to see how he creates a magma chamber!
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Granite is an igneous rock, which means it formed from magma, or melted rock. It forms deep inside the Earth under a...
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When viewed from above, the wide-open sea is vast and flat. But venture below and you'll find a varied landscape that...
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Igneous rocks form when magma, or melted rock from inside the Earth, cools and hardens. They can form above ground wh...
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Obsidian doesn't look like your typical rock. In fact, it looks more like dark glass than a rock you'd pick up in you...
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The Earth is always changing. Mountains form and erode away. Volcanoes erupt and grow larger. Earthquakes shift the l...
Reading

Take a peek at our planet's layers, learn what secrets rocks reveal, and gain a long view of history.
Game + Video

Volcanoes, tsunamis, earthquakes... Examine how plate tectonics affect our world!
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The plates that make up the Earth's crust are always moving. When two plates meet, the motion causes lots of pressure...
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If you look at a map, the coasts of South America and Africa seem to fit together like puzzle pieces.
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Deep inside the Earth, intense heat and pressure can change rocks into entirely new metamorphic rocks.
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Ed Mathez has always been fascinated by rocks and the Earth. As a young boy, he went with his mother to old rock quar...
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These rocks provide the most clues about the history of life on Earth. 
Game

Take an expedition across the Martian landscape with this video, then test your knowledge!
Reading

Explore the layers of our planet: the crust, mantle, and core.
Hands-on

Celebrate your cosmic smarts with a solar system of cookies.
Game

Test your knowledge about our planet Earth with this quiz.
Reading

Find out how he became a geologist and what you can learn from studying rocks.
OLogy Card
Mars is often called the "red planet." It's red because its surface is covered with rusted particles of iron.
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Venus and Earth are sometimes called sister planets because of their similar size, but don't let this comparison fool...
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On July 5, 1997, the six-wheeled robotic rover, Sojourner, rolled down a ramp from the Pathfinder spacecraft onto the...
Reading + Game

Find out what we know about Mars in this online tour of Earth's closest neighbor.
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At the top of the world is a cold and icy area called the Arctic. It is made up of the Arctic Ocean and parts of Nort...
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There is nothing in the world like water. Without it, our world would be a very different place. Water covers over tw...
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If you ever go to Mercury, bring your sunscreen because it is the planet closest to the Sun. You'll also need a pair...
Reading

Water is a precious resource, and all things need water to survive.
Reading

Museum scientists answer kids' questions!
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Antarctica is like no other place on Earth. The continent is covered almost entirely by a thick ice sheet. Yet there...
Video

Find out how five different environments produce Earth's amazing minerals!
Video

Do you dig the Earth? If so, you'll want to meet Ed.