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Volcanos
Question | Answer |
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What is a Volacano? | A volcano is a vent or chimney which transfers molten rock known as magma from depth to the Earth's surface. |
How is magma formed? | It is formed from the melting of rocks in the earth's lithosphere, |
What is the oldest volcano? | Mt Etna of Italy is thought to be the world's oldest active volcano. |
What is the most active volacno? | Sangay is one of the most active volacanos. |
What is lava? | Lava is made up of crystals, volcanic glass, and bubbles (volcanic gases) |
What is a Crator? | A volcanic crater is a roughly circular depression in the ground caused by volcanic activity. |
How is volcanic ash formed? | Volcanic ash is formed during explosive volcanic eruptions when dissolved gases in magma expand and escape violently into the atmosphere. |
What good causes can a volcano cause? | The main good effect that volcanoes have on the environment is to provide nutrients to the surrounding soil. |