Background information on volcanoes

In a Strombolian phase named after the Stomboli volcano on an island north of Sicilythick lava is emitted in continuous but mild explosions. When Earth was new, the superheated gases within it including carbon dioxide streamed out through countless volcanoes to form the original atmosphere and oceans.

The blast, which sent a mushroom-shaped ash plume 12 miles 20 kilometers high, reduced the summit peak by more than 1, feet meters. If a volcano is erupting, it is called active. Mauna Kea observed from space. This pressure causes plates to move toward or away from each other and also past each other in a horizontal motion.

Geothermal stations now light electric power grids in Iceland, Italy, New Zealandand a other places.

When oceanic plates converge, one sinks beneath the other, creating a deep-sea trench. It also spewed smoke and lava in but no major eruption followed. When a volcano erupts such a large volume of material, often emptying its magma chamber, the central part of the cone is left unsupported.

There are 20 Volcanoes Erupting Right Now: Helens in Washington erupted with the force of more than atomic bombs—one of the largest volcanic explosions in North American history. The volcano, which sent a column of hot ash 12 miles 19 kilometers into the sky, struck down the people where they lived, preserving the shapes of their bodies where they fell in the ash.

In a Hawaiian phase, runny lava gushes out in a fountain without any explosive eruptions. Volcanoes are found both on land and under the oceans where they are called seamounts. Rising magma from the subducted plate then rises to form volcanoes along the trench.

Volcanoes form on either side of the ridge. Hot spots are special areas where volcanoes form apart from plates converging or diverging.

Background Information for a Volcano Science Project

If you add the underwater volcanoes, you get an estimate that there are a total of about 6, volcanoes that have erupted in the last 10, years. Molten rock deep within Earth that consists of liquids, gases, and particles of rocks and crystals.

The explosion plunged the world into a world wide ice age.

As a result, the crater and walls of the vent collapse into the hollow chamber, creating a large circular depression known as a caldera across the summit. The collapse was heard almost 2, miles 4, kilometers away.

When Vesuvius exploded in AD 79, it buried the towns of Pompeii and Herculaneum, killing 16, people. Its last major eruption was inwhen 66 people were killed. The cone is the outer portion of the volcano where lava and ash collect. Their slopes are seldom more than 10 degrees at the summit and 2 degrees at the base.

10 Interesting Facts About Volcanoes

Geologists measure volcano eruptions using the Volcano Explosivity Index, which measures the amount of material released. Ensuing landslides carried debris for nearly 20 miles 32 kilometers.

The volcano was put on "stand-by" status one month ago. Within a week it was 5 stories tall, and by the end of a year it had grown to more than meters tall. Lava domes are made of thick, pasty lava squeezed like toothpaste from a tube.BACKGROUND INFORMATION Overview of Kīlauea summit and East Rift Zone eruptions.

Kīlauea, one of five volcanoes on the Island of Hawai‘i, has been erupting nearly continuously. Mount Merapi (Background Information) Indonesia's Mount Merapi is the nation's second most active volcano and has great spiritual significance for those living on its fertile slopes.

Merapi, which means "Mountain of Fire", typically has small eruptions every two to three years, and larger ones about once every 10 to 15 years.

11 Facts About Volcanoes Welcome to, a global movement of 6 million young people making positive change, online and off!

The 11 facts you want are below, and the sources for the facts are at the very bottom of the page. Background Information for a Volcano Science Project By Daniella Lauren; Updated April 24, Understanding how volcanoes work will improve your overall comprehension of your science project.

Background Information for a Volcano Science Project | Get more information about volcanoes from National Geographic.

Background information on volcanoes
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