Read the passage and mark the sentences T (True) or F(False) (câu hỏi T or F trong ảnh nhé) What are tsunamis? Tsunamis are large and powerful ocean waves that grow in size as they reach the shore. They can cause major damage as they rush inland flooding cities and destroying homes. What can cause a tsunami? Tsunamis are caused by a large displacement of water. Think of when you are sitting in the bathtub and you move forward in the tub. This can cause a relatively large wave. The same thing happens in the ocean when a large amount of water is suddenly moved. A number of events may cause this kind of movement including earthquakes, landslides, volcanic eruptions, glaciers breaking off, and even meteorites. Most tsunamis are caused by earthquakes. An earthquake occurs when a large area of the Earth's crust suddenly moves. When this happens underwater, big gaps may appear on the ocean floor. When water moves in to fill this gap, a tsunami is born.