How Do Volcanoes Work?
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Questions and Answers

What is the term used to describe the entrance of a volcano?

  • Vent (correct)
  • Magma
  • Lava
  • Conduit
  • Which type of volcano is the most vigorous and expected to erupt again in the near future?

  • Active Volcano (correct)
  • Dormant Volcano
  • Extinct Volcano
  • All of the above
  • What is the term used to describe molten rocks that erupt from a volcano and solidify as they cool?

  • Ash
  • Vent
  • Lava (correct)
  • Magma
  • Which of the following is an example of a dormant volcano?

    <p>Mount Ararat</p> Signup and view all the answers

    What is the term used to describe the hot molten rock coming from the mantle?

    <p>Magma</p> Signup and view all the answers

    Which type of volcano is at the end of its life and no longer able to erupt?

    <p>Extinct Volcano</p> Signup and view all the answers

    What is a volcanic neck?

    <p>A solid core of magma exposed after erosion of a volcano</p> Signup and view all the answers

    Which type of volcano is known for its gentle, sloping sides?

    <p>Shield volcano</p> Signup and view all the answers

    What is the typical height range of a cinder cone volcano?

    <p>400-1312 meters</p> Signup and view all the answers

    What is the primary difference between shield volcanoes and cinder cone volcanoes?

    <p>Shield volcanoes are made of lava flows, while cinder cones are made of pyroclastic materials</p> Signup and view all the answers

    What is the typical diameter of a shield volcano?

    <p>100 km or more</p> Signup and view all the answers

    Which type of volcanic eruption is associated with shield volcanoes?

    <p>Non-explosive, effusive eruptions</p> Signup and view all the answers

    What type of volcano forms from explosive eruptions with only one vent for magma flow?

    <p>Cinder cone volcano</p> Signup and view all the answers

    How are composite volcanoes characterized?

    <p>Steep slopes and alternating layers of lava flows and pyroclastic material</p> Signup and view all the answers

    What type of eruption characterizes volcanoes that build enough pressure to blow the top and send pyroclastic material into the air?

    <p>Explosive eruption</p> Signup and view all the answers

    Which type of volcano tends to increase in size after an eruption?

    <p>Stratovolcano</p> Signup and view all the answers

    What kind of lava composition is typical for explosive volcanic eruptions?

    <p>Granitic with high silica content</p> Signup and view all the answers

    What geographic coordinate specifies the north-south position of a point on Earth's surface?

    <p>Latitude</p> Signup and view all the answers

    What is the primary factor that determines the intensity and duration of sunlight received by a location on Earth?

    <p>The tilt of the Earth's axis and its orbit around the Sun</p> Signup and view all the answers

    Which of the following is the correct order of seasons in the Northern Hemisphere?

    <p>Spring, Summer, Fall, Winter</p> Signup and view all the answers

    What is the primary driving force behind ocean currents?

    <p>Winds, water density, and tides</p> Signup and view all the answers

    What is the characteristic of low-pressure air masses?

    <p>They are warm and moist</p> Signup and view all the answers

    What is the term used to describe the shape of the land's surface, including the direction in which the slope faces?

    <p>Relief</p> Signup and view all the answers

    Which of the following gases is not a greenhouse gas?

    <p>Oxygen (O2)</p> Signup and view all the answers

    What is the primary force that causes the Earth's crust to break up into different plates?

    <p>Slow movement of the tectonic plates</p> Signup and view all the answers

    What is the defining feature of a volcano?

    <p>A vent or opening in the Earth's surface</p> Signup and view all the answers

    What is the name of the underground cavity that contains magma beneath a volcano?

    <p>Magma chamber</p> Signup and view all the answers

    What is the name given to a small cone-shaped volcano formed by an accumulation of volcanic debris?

    <p>Parasitic Cone</p> Signup and view all the answers

    What is the name of the vertical, sheet-like magma body that cuts through older rocks or sediments?

    <p>Dike or Dyke</p> Signup and view all the answers

    What is the name of the cylindrical-like pipe or opening through which magma exits the crater and reaches the Earth's surface as lava?

    <p>Conduit</p> Signup and view all the answers

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