Documents Chapter 9 Volcanoes. 9.1 What causes volcanoes? Volcano: an opening in the Earth’s surface which.....

Slide 1 Chapter 9 Volcanoes Slide 2 9.1 What causes volcanoes? Slide 3 Volcano: an opening in the Earth’s surface which forms a mountain when layers of ash & lava build…

Documents Chapter 9

Chapter 9 Volcanoes 9.1 What causes volcanoes? Volcano: an opening in the Earthâs surface which forms a mountain when layers of ash & lava build up More than 600 active…