Quiz on Lahars

What are lahars?

• Sandstorms

• Lava flows

• Glacial ice

• Volcanic mudflows or debris flows

Where are lahars commonly found?

• Deserts

• Mountains

• Oceans

• Volcanic regions

What causes lahars to form?

• Earthquakes and wind

• Volcanic ash and water

• Lack of volcanic ash and water

• Molten lava and rocks

What is the primary danger associated with lahars?

• Destruction and damage caused by volcanic mudflows

• Air pollution from volcanic ash

• Excessive plant growth

• Lack of water supply

How fast can lahars travel?

• 20-40 miles per hour (30-65 kilometers per hour)

• 100-120 miles per hour (160-193 kilometers per hour)

• 50-60 miles per hour (80-100 kilometers per hour)

• 5-10 miles per hour (8-16 kilometers per hour)

What is the color of lahars?

• Blue

• Green

• Red

• Brown or gray

What precautions can be taken to minimize the impact of lahars?

• Encouraging more volcanic activity

• Praying for divine intervention

• Ignoring the potential danger

• Building barriers, diverting flow, and early warning systems

Which famous volcanic eruption resulted in lahars causing significant damage?

• Krakatoa eruption

• Mauna Loa eruption

• Mount St. Helens eruption

• Mount Pinatubo eruption

What is the composition of lahars?

• Sand, gravel, and salt

• Molten lava, steam, and sulfur

• Ice, snow, and mud

• Volcanic ash, rock debris, and water

How do lahars impact the environment?

• Creation of new infrastructure

• No impact on the environment

• Enhancement of vegetation and water bodies

• Destruction of vegetation, infrastructure, and water bodies