why does a volcano erupt for kids
What is a Volcano? A volcano is a landform (usually a mountain) where molten rock erupts through the surface of the planet. In simple terms a volcano is a mountain that opens downward to a pool of molten rock ( magma ) below the surface of the earth. It is a hole in the Earth from which molten rock and gas erupt. What is the difference between lava and Magma? Magma is liquid rock inside a volcano. Lava is liquid rock (magma) that flows out of a volcano. Fresh lava ranges from 1,300 to 2,200 F (700 to 1,200 C) in temperature and glows red hot to white hot as it flows.
How many volcanoes are there
in the world? There are around 1,510 active
volcanoes in the world. We currently know of 80 or more which are under the oceans. What are the three layers the Earth is made of? Crust The crust is the outer layer of Earth. It is about 18 miles thick. It is the part we live on. Mantle The second layer is called the mantle. It is about 1,800 miles thick. Core The inner layer is called the core.
What causes volcanoes to erupt? The Earth's crust is made up of huge slabs called plates, which fit together like a jigsaw puzzle. These plates sometimes move. Between the Earth's crust and the mantle is a substance called magma which is made of rock and gases. When two plates collide, one section slides on top of the other, the one beneath is pushed down. P Magma is squeezed up between two plates. When magma erupts, what is it called? When magma erupts through the earth's surface it is called lava What is the Ring of Fire?
Over half of the worlds volcanoes arise in a belt around the Pacific Ocean called the Ring of Fire. Websites Each triangle on the map represents a volcano. What is a volcano?. Why do volcanoes erupt?. Where do volcanoes erupt?. How hot is a volcano? including The top surface of the Earth is called the crust. Less than 20 miles thick, it sits on top of a layer of molten rock and gas called magma.
The crust is made of huge pieces called tectonic plates that fit together like a puzzle, but heat and pressure from the Earth's core make them move slowly against each other, forming cracks in the crust. A volcano is a mountain located on a crack in the crust, opening into the pool of magma beneath it. When heat from deep inside the earth creates enough pressure, magma and gases push up through the opening and erupt from the volcano, spewing ash, steam, rocks, and molten lava into the air.
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