This is an image of Mt. St. Helens, in Washington, USA.
Click on image for full size
Image from: USGS, courtesy of Volcano World
Volcanoes are large eruptions that come from deep in the Earth's core. When they erupt, they spew out lava which flows out until it hardens into rock. There are presently thousands of volcanoes, but only a few of them ever become large enough to cause massive destruction. Scientists are sometimes able to predict volcanoes, but they have no exact theory of why one might erupt.
Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
section of our online store
includes a climate change card game
and the Traveling Nitrogen game
You might also be interested in:
Pele is a fire goddess according to the people of Hawaii. She is savage and wrathful and resides in the crater of the volcano Kilauea. It is said that one day Kamapua'a, a pig god of Hawaii mythology,...more
Compared with other planets, impact craters are rare surface features on Earth. There are two main reasons for the low number of craters. One is that our atmosphere burns up most meteoroids before they...more
Earth, the largest rocky planet, was formed about 4.5 billion years ago. The Earth's interior is divided into four layers which is typical of rocky planets. It is cool on the surface but very hot deep...more
Underneath the water that fills the oceans, and the dirt and plants that cover the land, the Earth's surface layer is made of rock. Long ago, this rocky outer layer of Earth formed a hard crust when lava...more
Clouds are the pretty white fluffs you see in the sky. They are made up of tiny water drops. Sometimes, if the wind is fast enough, you can even watch the clouds move. Clouds can come in all sizes and...more
One in a while, a tropical thunderstorm grows and grows, becoming a giant hurricane. First the storm grows a little bit. It combines with other thunderstorms and they all spin around an area of low pressure....more
Each hurricane moves across the ocean and usually hits the land too. How do we know which way a hurricane will go? Several different things control where a hurricane goes. † Global winds carry hurricanes...more
One of the most dangerous parts of a hurricane isnít the rain or the wind. Itís the flooding caused by storm surge. As a hurricane or other tropical storm moves towards a coast, it can cause sea level...more