questions+about+this+video

"THE RING OF FIRE". 1.- What is the ring of fire? 2.- Why are scientists interested in studying the ring of fire? 3.- What did Wegener say about the composition of the continents? 4.- What idea did Wegener suggested about the position of the continents? 5.- According to Plate Tectonic, the surface of the Earth consists on a number of plates that float and................................. .............................every year. 6.- Why do all the existing plates have to move? 7.- What happen when one plate hit another plate? How is it called? 8.- What happen due to the extreme temperatures?