Volcanic Eruptions and the Earth's Surface
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Volcanic Eruptions and the Earth's Surface

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Questions and Answers

What is the main cause of a volcanic eruption?

  • The release of dangerous gases
  • The buildup of magma in a chamber beneath the volcano (correct)
  • The dissolution of gases in magma
  • The emission of water vapor
  • What is the primary result of the magma reaching the breaking point?

  • Dissolution of gases in magma
  • Lava flow onto the earth's surface (correct)
  • Release of dangerous gases
  • Emission of water vapor
  • What are the components of a volcanic eruption?

  • Lava only
  • Lava and various gases (correct)
  • Lava and water vapor
  • Carbon dioxide and sulfur dioxide only
  • What are the potential health effects of inhaling volcanic gases?

    <p>Serious health problems for animals and humans</p> Signup and view all the answers

    Which statement about volcanic gases is true?

    <p>Gases are first brought to the surface by being dissolved in magma</p> Signup and view all the answers

    What is the primary cause of pressure buildup before a volcanic eruption?

    <p>Rise in magma levels in the chambers below volcanic vents</p> Signup and view all the answers

    What is the side effect of volcanic eruptions apart from the emission of lava?

    <p>Release of dangerous gases</p> Signup and view all the answers

    What is the most abundant gas during a volcanic eruption?

    <p>Water vapor</p> Signup and view all the answers

    How does water vapor contribute to the warming of Earth's surface?

    <p>By trapping heat in the atmosphere</p> Signup and view all the answers

    Which gas is known for reflecting sunlight from the sun back into space?

    <p>Sulfur dioxide</p> Signup and view all the answers

    What is a characteristic of carbon dioxide expelled through volcanic eruptions?

    <p>It is noncombustible</p> Signup and view all the answers

    How does sulfur dioxide contribute to acid rain?

    <p>By decreasing the pH of rainwater</p> Signup and view all the answers

    What is an effect of breathing in highly concentrated carbon dioxide?

    <p>Fatal to humans</p> Signup and view all the answers

    Which gas contributes to irritation of the eyes and damage to the respiratory system when inhaled?

    <p>Hydrogen sulfide</p> Signup and view all the answers

    What is a method to avoid inhaling dangerous volcanic gases?

    <p>Disable all ventilation systems near a volcano</p> Signup and view all the answers

    How is volume measured?

    <p>By taking measurements of each side of the object and multiplying them</p> Signup and view all the answers

    What is a simple way to measure volume?

    <p>Using measuring cups</p> Signup and view all the answers

    What do two shapes with the same volume mean?

    <p>They would hold the same amount of water</p> Signup and view all the answers

    What is the relationship between the appearance and volume of objects?

    <p>Objects with different appearances can have the same volume</p> Signup and view all the answers

    What is NOT a valid method for measuring volume?

    <p>Estimating based on the appearance of the object</p> Signup and view all the answers

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