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150 Years American Museum of Natural History

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29 Results for "volcano"

olc_250_volcanoes_listing

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.

Volcanoes, tsunamis, earthquakes... Examine how plate tectonics affect our world!

olc_252_ring_of_fire_listing

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...

olc_251_hot_spots_listing

Most volcanoes form along plate boundaries. But some of the world's largest and most active volcanoes are found far f...

olc_248_jim_webster_listing

Jim is fascinated with volcanoes. He wants to know why some volcanoes erupt explosively, and how he might be able to...

olc_243_granite_listing

Granite is an igneous rock, which means it formed from magma, or melted rock. It forms deep inside the Earth under a...

Visit a scientist's lab to see how he creates a magma chamber!

olc_253_plate_tectonics_listing

The Earth is always changing. Mountains form and erode away. Volcanoes erupt and grow larger. Earthquakes shift the l...

olc_244_igneous_rocks_listing

Igneous rocks form when magma, or melted rock from inside the Earth, cools and hardens. They can form above ground wh...

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

olc_256_ed_mathez_listing

Ed Mathez has always been fascinated by rocks and the Earth. As a young boy, he went with his mother to old rock quar...

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

olc_319_antarctica_listing

Antarctica is like no other place on Earth. The continent is covered almost entirely by a thick ice sheet. Yet there...

olc_049_venus_listing

Venus and Earth are sometimes called sister planets because of their similar size, but don't let this comparison fool...

olc_051_mars_listing

Mars is often called the "red planet." It's red because its surface is covered with rusted particles of iron.

olc_254_mid-ocean_ridge_listing

When viewed from above, the wide-open sea is vast and flat. But venture below and you'll find a varied landscape that...

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

Send a note to a friend with these earthy letterheads.

Test your knowledge about our planet Earth with this quiz.

olc_034_sedimentary_rocks_listing

These rocks provide the most clues about the history of life on Earth.

olc_062_sojourner_listing

On July 5, 1997, the six-wheeled robotic rover, Sojourner, rolled down a ramp from the Pathfinder spacecraft onto the...

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

olc_050_earth_listing

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...

olc_048_mercury_listing

If you ever go to Mercury, bring your sunscreen because it is the planet closest to the Sun. You'll also need a pair...

olc_053_saturn_front

Saturn is known for the beautiful rings that form a giant hula hoop around it. The rings are made of chunks of ice an...

olc_063_viking_listing

The Viking mission was the first to explore Mars' surface. Two spacecraft, Viking 1 and 2, each with an orbiter and a...

olc_064_pathfinder_listing

Pathfinder landed on Mars' surface carrying thesix-wheeled Sojourner rover, a mobile robot. Rover and lander took ov...

olc_078_craters_listing

Craters are formed when objects from space crash onto a planet's surface. The impact blasts a hole or impression wher...

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