How Volcanoes Cool Down The Earth

What natural event compounded the effects of Mount Pinatubo's eruption?

• Earthquake

• Tsunami

• Typhoon

• Flood

In what year did Mount Pinatubo erupt after a long period of dormancy?

• 2021

• 1978

• 1815

• 1991

What percentage of volcanic gas emissions is made up of water vapor, carbon dioxide, and sulfur dioxide?

• 75%

• 85%

• 90%

• 99%

How have volcanoes contributed to making Earth habitable?

• By forming oceans

• By releasing gases essential for life

• By creating fertile soil

• By cooling the planet's surface

What was the global temperature increase since the preindustrial era?

• 0.5 degrees Celsius

• 1.1 degrees Celsius

• 1.5 degrees Celsius

• 2 degrees Celsius

How long can aerosol particles from a volcanic eruption remain in the stratosphere?

• 1-2 years

• 2-3 years

• 4-5 years

• 3-4 years

What was the immediate global climate effect of the Mount Pinatubo eruption?

• Increase in rainfall

• No significant change

• Decrease in global temperature

• Increase in global temperature

Which eruption led to a 'year without a summer'?

• Krakatoa

• Mount Pinatubo

• Mount Tambora

• Mount St. Helens

How often are massive volcanic blasts expected to occur?

• Once every 50 years

• Once every 100 years

• Once every 150 years

• Once every 200 years

What is the controversial method being considered to cool the planet?

• Introducing sulfur aerosols into the stratosphere

• Increasing ocean albedo

• Injecting water vapor into the atmosphere

• Planting more trees globally