Volcanoes Quiz

True or False: Most volcanoes form where earthquakes can occur.

• True
• False

True or False: Most volcanoes form in places where it is warm.

• False
• True

What warning signs do volcanoes give off before an eruption?

• Smoke, volcanic gases, or seismic activity
• Thick, black layers of rock
• The Ring of Fire
• None

Where do most volcanoes form?

• Africa
• The Pacific Ocean
• Along plate boundaries and hot spots
• The island of Loihi

If Loihi reaches sea level in 10,000 years, what would its average rate of growth per year be? (Loihi is 969 meters from sea level)

• 969 meters per year
• 0.00969 meters per year
• 0.0969 meters per year
• 96.9 meters per year

What is the newest Hawaiian island?

• Maui
• Oahu
• Loihi
• Lanai

What is the difference between a mudflow and a lava flow?

• Mudflows move slowly and lava flows move quickly
• Lava flows move slowly and mudflows move quickly
• Mudflows involve boulders and lava flows involve farmland
• Lava flows can reach heights of 40 meters and mudflows cannot

What harmful gases are emitted by volcanoes?

• Landslides and pyroclastic flows
• Carbon dioxide and sulfur dioxide
• Oxygen and carbon monoxide
• Thick, black layers of rock

What volcanic hazard can flow at speeds greater than 100 km per hour and reach temperatures more than 1000 degrees Celsuis?

• Lava Flows
• Volcanic Gases
• Landslides
• Pyroclastic Flows

What is the oldest Hawaiian island?

• Maui
• Loihi
• Kauai
• Oahu