1001 Space Earth Earth Rocks and Minerals Landscape Sea Weather and Climate Natural Disasters Resources Nature History Human World Science and Technology

Choose a Page:What is the Earth's crust made from?Were the continents once joined to...Why does a compass needle point north?How heavy is the Earth?How are mountain ranges made?What are block mountains?*Where does volcanic lava come from?*What is air?Why is the Earth hot inside?How do the continents move?What is inside the Earth?How old is the Earth?How can we find out about other pl... Where does volcanic lava come from? A volcano is an opening in the Earth's crust through which molten rock (lava) erupts. The molten rock may come from the mantle, or it may be formed when parts of the continental crust melts. An erupting volcano   Previous: Back Book: 1001 Section: Earth Chapter: Earth