Volcanoes and Plate tectonics

What is the origin of magma?

• Pressure
• Oceans
• Prairies
• Disneyland

Please name a type of volcano

• hot spot
• cinder cone
• lacolith
• dike

Most volcanoes form along divergent and __________ plate boundaries.

• lower
• decreasing
• convergent
• huge

The number of years most hot spots have lasted.

• hundreds of years
• 2 weeks
• thousands of years
• millions of years

Why does magma come to the surface?

• cold air
• water content
• stale air
• light

Name a third type of plate.

• pluton
• caldera
• subduction
• suction

What is the Ring of Fire?

• A Willie Nelson song
• A long belt of volcanoes that circles the Pacific Ocean
• pangea

____________ is a resistance to flow.

• vent
• eruption
• chi
• viscosity

During a volcanic eruption, particles called ____________ are ejected.

• emojis
• calderas
• tiles
• pyroclastic materials

True or False? Magma forms when solid rock in the crust and upper mantle partially melts.

• True
• False