Question

Volcanoes have been(1)………..on the earth for millions of years. More than 500 still erupt today. These are (2)………..active volcanoes. Volcanoes are located in belts or chains. They are found (3)…………the earth,s crust is weak. The weak spots let the hot rock (4)………..when the volcano erupts. Many volcano belts are mountain ranges along the edges of continents. One belt runs along the western (5)………..of South America up through the western part of the United States. Other volcanoes are (6)………..in ocean basins. About three-ffths of all active volcanoes in the world are in the Pacific Ocean. Many of these volcanoes erupt (7)………..water. The Hawaiian Islands were (8)……….by volcanoes that began erupting under water and finally reached the surface of the ocean.

Answer 1

1. erupting

2. called

3. escape

4.coast

5.reaching