Chapter 1
The moving puzzle of tectonic plates
Chapter 2
Inside the fiery chambers of volcanoes
Chapter 3
When the earth shakes and rolls
Chapter 4
Living with a restless planet
YOUR GOAL
Master of Volcanoes and earthquakes
Ch 2 · Inside the fiery chambers of volcanoes
artiteacher Inside Volcanoes
Beneath the crust, Magma's fiery brew! Gases build the pressure, Bursting right on through!
artiteacher Shield volcanoes have broad, flat profiles built by runny, fluid lava that flows easily over vast distances without major explosions.
artiteacher Steep, cone-shaped stratovolcanoes produce highly explosive eruptions due to thick, sticky magma that traps expanding gases.
Fun Fact
Underwater eruptions: Over 70 percent of all volcanic activity on Earth occurs silently at the bottom of the oceans along mid-ocean ridges.
Glossary
magma chamber (noun)
A large underground pool of liquid rock found beneath the surface of the Earth's crust. Iceland's dormant Thrihnukagigur is the only volcano where visitors can safely descend into its drained magma chamber.
A large underground pool of liquid rock found beneath the surface of the Earth's crust. Iceland's dormant Thrihnukagigur is the only volcano where visitors can safely descend into its drained magma chamber.
Quiz
What is the name of the collapsed, bowl-like basin left behind after a massive volcanic eruption?
Quiz
What thick, glassy volcanic rock is formed when lava cools almost instantly in water?
Quiz
What gas released by volcanoes can cause global cooling by reflecting sunlight?
Quiz
Which active European volcano destroyed the ancient Roman city of Pompeii in 79 CE?
Quiz
Which volcanic eruption in 1883 was so loud it was heard 4,800 kilometers away?