What is the highest mountain in the world?

What causes a volcano to erupt?

Which of these is an active volcano?

What do we call melted rock inside a volcano?

What is a chain of mountains called?

Which country is home to Mount Fuji?

What is the Ring of Fire?

Which of these is formed by volcanic activity?

What is the name of the second highest mountain in the world?

What is lava called when it is still inside the Earth?