When steam, gases and molten rock are forced out of the Earth's crust,
an _______________________ of a __________________________ is said to have taken place.
Eruption, Volcano
1/20
The line that passes from the North Pole to the South Pole through Greenwich is called the __
Prime Meridian
9/20
The shallow area under the sea close to the land is called _______________________.
the continental shelf
12/20
The place where a small river joins a main river is called the ________________________.
Confluence
14/20