Volcanic Outgassing

What is the process called when gases are released from a volcano?

• Volcanic Outgassing

• Volcanic Eruption

• Volcanic Cooling

• Volcanic Sedimentation

What is volcanic outgassing?

• The release of gases from the ocean floor.

• The release of gases from within the earth during volcanic eruptions and through cracks in the Earth's crust.

• The release of gases from the atmosphere into the ocean.

• The release of gases from plants during photosynthesis.

What happens during volcanic outgassing?

• Gases are absorbed into the magma.

• Gases come from magma and escape when the pressure decreases.

• Gases are formed in the atmosphere.

• Gases are trapped in the ocean.

Which of the following gases is NOT typically released during volcanic outgassing?

• Water vapour (H₂O)

• Carbon dioxide (CO₂)

• Sulfur dioxide (SO₂)

• Oxygen (O₂)

Approximately how many years ago was the Earth formed?

• 3.5 billion years ago

• 4.6 billion years ago

• 5.5 billion years ago

• 6.6 billion years ago

Why did the early Earth have no atmosphere?

• The planet was too cold

• The planet was too hot

• The planet was too small

• The planet was too far from the sun

What released large amounts of gases trapped within the Earth's interior?

• Earthquakes

• Meteor impacts

• Intense volcanic activity

• Ocean currents

Which gas released by volcanic outgassing is the most abundant and later condensed to form the Earth's oceans?

• Carbon Dioxide (CO₂)

• Nitrogen (N)

• Water vapour (H₂O)

• Sulfur dioxide (SO₂)

What role did Carbon Dioxide (CO₂) play in the Earth's atmosphere according to the volcanic outgassing process?

• Became the dominant gas in the atmosphere

• Helped create the greenhouse effect, which warmed the planet

• Forms sulfuric acid and acid rain

• Cooling effect on climate

Which gas became the dominant gas in the atmosphere as a result of volcanic outgassing?

• Water vapour (H₂O)

• Carbon Dioxide (CO₂)

• Nitrogen (N)

• Sulfur dioxide (SO₂)