Volcanoes

• Which is the smallest type of volcano?

  Cinder cones
• Which type of volcano is formed by the layers of lava?

  Shield volcano
• What is the name of the area where an estimated 75% of the Earth’s volcanoes are located?

  Ring of fire
• What kind of energy do volcanoes produce?

  Geothermal energy
• Where is the most active volcano on the planet located?

  Hawaii
• A volcano that is located away from tectonic plate boundaries is called a hotspot
• How many active volcanoes are there, approximately, worldwide?

  1500
• Volcanoes that are made of basalt lava flows are called shield volcanoes
• The particles produced in volcanic eruptions are called pyroclastic material
• When a particularly explosive eruption occurs, the stratovolcano could collapse, forming a large depression called a caldera
• A dense mud flow that results when snow and ice melts during an eruption and combines with volcanic ash and debris is a(n) lahar
• A volcano that is erupting or has shown signs that it may erupt in the future is called active
• Volcano


  An opening in Earth's crust
• What kind of volcano is made of alternating layers of lava and tephra?

  Composite volcano
• What is the most explosive types of volcanoes?

  Composite volcano
• Where is the ring of fire located?

  Pacific ocean
• The higher the temperature of magma is, the higher is its viscosity.