1.how are earthquakes caused.
Earthquakes are the vibrations caused by rocks breaking under stress. The underground surface along which the rock breaks and moves is called a fault plane.
Earthquakes in Australia are usually caused by movements along faults as a result of compression in the Earth’s crust.
2.research and compare the 2004 sumatra and 2011 japan earthquakes and the consequences.
On March 11, 2011, a magnitude-9 earthquake shook northeastern Japan, unleashing a savage tsunami.
The effects of the great earthquake were felt around the world, from Norway's fjords to Antarctica's ice sheet. Tsunami debris continues to wash up on North American beaches two years later.
3.find out why earthquakes are likely to occur in some areas than others.
Earthquakes occur all over the world but there are places where they happen more often. Big earthquakes can be found where plates meet.
80% of the world’s earthquakes happen around the Pacific Ocean—near the east coast of Asia and the west coast of America. Japan has over 2,000 earthquakes every year and California and South America are also very active earthquake zones. The edge of the Pacific Ocean is also called the “Ring of Fire” because there are also many active volcanoes in this region.