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23 Results for "volcano"

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Find out why and how volcanoes form.
CARD 250
Some volcanoes erupt explosively, like opening a shaken soda bottle, because their magma is full of gases.

Find out what causes volcanoes to erupt and how scientists study them.
CARD 252
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 vo...
CARD 251
Most volcanoes form along plate boundaries. But some of the world's largest and most active volcanoes are found far from...

Volcanoes, tsunamis, earthquakes... Examine how plate tectonics affect our world!
CARD 248
Jim is fascinated with volcanoes. He wants to know why some volcanoes erupt explosively, and how he might be able to hel...
CARD 244
Igneous rocks form when magma, or melted rock from inside the Earth, cools and hardens. They can form above ground when ...

Take an expedition across the Martian landscape with this video, then test your knowledge!
CARD 243
Granite is an igneous rock, which means it formed from magma, or melted rock. It forms deep inside the Earth under a mou...
CARD 257
Guatemala is located in Central America. It sits south of Mexico and northwest of El Salvador and Honduras.

Visit a scientist's lab to see how he creates a magma chamber!
CARD 240
Like many kids interested in science, Ro Kinzler thought she wanted to be a marine biologist. But later on, she realized...
CARD 247
Obsidian doesn't look like your typical rock. In fact, it looks more like dark glass than a rock you'd pick up in your b...
CARD 253
The Earth is always changing. Mountains form and erode away. Volcanoes erupt and grow larger. Earthquakes shift the land...
CARD 256
Ed Mathez has always been fascinated by rocks and the Earth. As a young boy, he went with his mother to old rock quarrie...
CARD 050
The Earth is our home. So far, it's the only place that we know of that has life. Everywhere you look on Earth there is ...
CARD 254
When viewed from above, the wide-open sea is vast and flat. But venture below and you'll find a varied landscape that in...
CARD 303
Miles below your feet, scorching temperatures can get hot enough to melt rock. In some places, water heated deep undergr...
CARD 100
The St. Vincent parrot makes its home on the tropical island of St. Vincent in the Caribbean. These parrots are covered ...
CARD 049
Venus and Earth are sometimes called sister planets because of their similar size, but don't let this comparison fool yo...
CARD 016
This prehistoric relative of living ducks had a long neck, tall legs, webbed feet, and a duck-like head.
CARD 241
Sandstone is made of tiny pieces of sand you can see and feel. You can actually scratch away grains of sand from a piece...