Grade 6 - Science - How does the Earth change over time?: Volcanoes

Today, more than one billion people worldwide live in volcanic danger zones.

The ground beneath your feet is solid, right? After all, how could we build houses and bridges if the land was moving all the time? Actually, the ground beneath us really is moving very slowly all the time!

Scientists have mapped less than 10 percent of the ridge of underwater mountains in the middle of the Atlantic ocean.It is here that 95 percent of the volcanic activity on earth occurs.

Find out about the different types of volcanoes and how they form. Learn how scientists monitor volcanic activity, and what makes some eruptions so much more destructive than others.

"In 1999, about 15,000 people who lived within the range of the Tungurahua volcano in Ecuador were evacuated. They weren't allowed to return home for a year. Since then, the volcanic activity there has been dangerous enough to cause more evacuations, including in 2010 and 2016.

Earthquakes, volcanoes, tsunamis. Headline-making natural disasters with devastating consequences for millions of people.

Life on Earth is never boring. What actually happens when Earth unleashes its fury?

Volcanoes are unstoppable forces of nature.