Volcanoes

What is the main purpose of the diagram shown?

• To illustrate the structure of a volcano

• To show the lifecycle of a volcano

• To depict the types of volcanic eruptions

• To explain the history of volcanic activity

What is the opening at the top of a volcano called?

• Magma Chamber

• Crater

• Main Vent

• Lava Flow

Where is the store of hot molten rock beneath a volcano located?

• Volcanic Cloud

• Lava Flow

• Magma Chamber

• Crater

What is the term for molten rock flowing down the side of a volcano?

• Volcanic Bombs

• Lava Flow

• Crater

• Magma Chamber

What consists of gas, steam, and ash escaping from a volcano?

• Volcanic Cloud

• Lava Flow

• Main Vent

• Crater

What are large pieces of rock ejected from a volcano called?

• Magma Chamber

• Volcanic Bombs

• Layers of Ash and Lava

• Secondary Vent

What does the term "vulcanicity" refer to?

• All volcanic activities related to magma being forced into the crust

• The cooling of lava on the Earth's surface

• The formation of sedimentary rocks

• The erosion of mountains by wind

Where does vulcanicity usually occur?

• At plate margins

• In the middle of tectonic plates

• In ocean trenches

• On mountain peaks

What is magma?

• Molten rock that remains below the Earth's surface

• Solid rock found in the Earth's crust

• Water vapor released during volcanic eruptions

• A type of sedimentary rock

What happens to magma at high temperatures and pressures?

• It exploits weaknesses in the crust and may erupt as lava

• It solidifies into igneous rock

• It evaporates into the atmosphere

• It forms new tectonic plates