III. Read the following passage and do the tasks below :
Tsunamis, whose name derives from the Japanese expression for "high wave in a harbour", are giant sea waves. These waves are quite different from storm surges. They are also referred to by the general public as tidal waves although they have nothing to do with tides. Scientists often refer to them as seismic sea waves, which is far more appropriate because they are often the result of undersea seismic activity.
Tsunamis can be caused when the sea floor suddenly moves, during an underwater earthquake or volcano, and the water above the moving earth is suddenly displaced. This sudden shift of water sets off a series of waves. These waves can travel great distances, at speeds close to 700 kilometres per hour. In the open ocean, tsunami waves are not very high, often no more than one or two metres. It is when they hit the shallow waters near the coast that they increase in height, possibly up to 40 metres.
A. Choose the best answer A, B, C or D to complete the sentences:
1.The passage mainly discusses __________.
A.tidal waves B.tides C.tsunamis D.storm surges
2. The word "they" in line 5 refers to __________.
A. tides B. seismic sea waves C.storm surges D.scientists
B. Answer the questions:
1. What are Tsunamis?
.............................................................................................................................................
2. Are Tsunamis the same as storm surges?
...........................................................................................................................................
3. When do tsunami waves increase in height up to 40 meters?
..........................................................................................................................................
A. Choose the best answer A, B, C or D to complete the sentences:
1.The passage mainly discusses __________.
A.tidal waves B.tides C.tsunamis D.storm surges
2. The word "they" in line 5 refers to __________.
A. tides B. seismic sea waves C.storm surges D.scientists
B. Answer the questions:
1. What are Tsunamis?
They are giant sea waves.
2. Are Tsunamis the same as storm surges?
No, they aren't
3. When do tsunami waves increase in height up to 40 meters?
It is when they hit the shallow waters near the coast
A. Choose the best answer A, B, C or D to complete the sentences:
1.The passage mainly discusses __________.
A.tidal waves B.tides C.tsunamis D.storm surges
2. The word "they" in line 5 refers to __________.
A. tides B. seismic sea waves C.storm surges D.scientists
B. Answer the questions:
1. What are Tsunamis?
Tsunamis are giant sea waves.
2. Are Tsunamis the same as storm surges?
No, they aren't. They are quite different from storm surges.
3. When do tsunami waves increase in height up to 40 meters?
It is when they hit the shallow waters near the coast.
1.The passage mainly discusses __________.
A.tidal waves B.tides C.tsunamis D.storm surges
2. The word "they" in line 5 refers to __________.
A. tides B. seismic sea waves C.storm surges D.scientists
B. Answer the questions:
1. What are Tsunamis?
.............. Tsunamis, whose name derives from the Japanese expression for "high wave in a harbour", are giant sea waves. ........................................................
2. Are Tsunamis the same as storm surges?
............No, they aren't......................
3. When do tsunami waves increase in height up to 40 meters?
they hit the shallow waters near the coast that they increase in height