Volcanic Materials
A walnut-sized pyroclastic particle.
What is a lapilli?
A large volcano with a broad dome shape
What is a Shield Volcano?
How many volcanoes are in the United States?
The United States has about 169 active volcanoes, mostly in Alaska.
Having to do with materials that are expelled through the air from a volcano
What is a pyroclastic?
A volcano made of alternating layers of lava flows and pyroclastic material
What is a composite cone?
How many volcanoes are there in the world?
There are about 1,500 active volcanoes worldwide.
A mass of hot, glowing pyroclastic material that is ejected from a volcano and which flows down the slopes of the volcano at high speeds
What is pyroclastic flow?
A small volcano built mainly from loose pyroclastic material such as cinders and lapilli
What is a cinder cone?
What is the largest volcano on Earth?
Mauna Loa in Hawaii
Silt and sand-sized pyroclastic material that may be carried in the atmosphere hundreds of thousands of kilometers downwind from a volcano
What is ash?
A volcanic eruption where lava is erupted from long cracks in Earth's crust called fissures rather than from craters at the summits of volcanoes
What is fissure eruption?
What is the temperature inside a volcano?
Magma can reach 1,300-2,400 degrees F.
Molten rock inside Earth
What is magma?
A large volcanic crater
What is a caldera?
What is the name of the largest volcano in our solar system?
Olympus Mons on Mars