Podcast
Questions and Answers
What is the name for the 18-mile thick layer of solid rock that we live on?
What is the name for the 18-mile thick layer of solid rock that we live on?
What can happen when two of the Earth's plates move together?
What can happen when two of the Earth's plates move together?
What causes the gas bubbles inside magma to grow bigger?
What causes the gas bubbles inside magma to grow bigger?
Why does a volcano erupt according to the text?
Why does a volcano erupt according to the text?
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What type of eruption is expected when the magma is runny and the gas can escape easily?
What type of eruption is expected when the magma is runny and the gas can escape easily?
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Why is it important to know about the Earth's crust in order to understand volcanic eruptions?
Why is it important to know about the Earth's crust in order to understand volcanic eruptions?
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What is the term used for the molten rock that flows from a volcano?
What is the term used for the molten rock that flows from a volcano?
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Which term refers to the smallest pyroclasts thrown from a volcano?
Which term refers to the smallest pyroclasts thrown from a volcano?
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What type of volcanoes are formed by runny lava spreading out over a wide area?
What type of volcanoes are formed by runny lava spreading out over a wide area?
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Which volcano is an example of a strato-volcano?
Which volcano is an example of a strato-volcano?
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What event formed Crater Lake in the United States?
What event formed Crater Lake in the United States?
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Study Notes
Earth's Crust and Volcanic Eruptions
- The 18-mile thick layer of solid rock that we live on is called the lithosphere.
- When two of the Earth's plates move together, they can collide and cause the Earth's surface to buckle, forming mountains or volcanoes.
- Gas bubbles inside magma grow bigger when the pressure on them decreases, causing them to expand.
- A volcano erupts when the pressure of the gas bubbles in the magma becomes too great, causing the magma to burst out of the ground.
- When magma is runny and gas can escape easily, a gentle eruption is expected.
- Knowing about the Earth's crust is important for understanding volcanic eruptions because it helps us understand the movement of tectonic plates and the formation of volcanoes.
- The term used for molten rock that flows from a volcano is lava.
- The smallest pyroclasts thrown from a volcano are called ash.
- Volcanoes formed by runny lava spreading out over a wide area are called shield volcanoes.
- Mount Fuji is an example of a strato-volcano.
- Crater Lake in the United States was formed by a massive volcanic eruption that caused the volcano to collapse.
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Description
Test your knowledge about volcanoes with this multiple choice quiz based on the characteristics and locations of active and extinct volcanoes around the world. Learn more about these fascinating geological features and their significance in understanding the Earth's composition.
