Question

Consider the following statements about Tsunami characteristics and their impact.

1. Tsunamis are a series of powerful ocean waves created by the abrupt displacement of a large volume of seawater.
2. These waves have the ability to travel only short distances across oceans.
3. Upon reaching coastal areas, tsunamis cause a highly destructive surge on land.
4. The term 'tsunami' refers to a single, unusually large wave.

• A. മൂന്ന് മാത്രം
• B. ഒന്ന് മാത്രം
• C. ഒന്നും മൂന്നും
• D. ഒന്ന്

Answer 1

Answer:

C. ഒന്നും മൂന്നും

Tsunamis are not single waves but a 'wave train' that can last for hours. In the deep ocean, tsunami waves might be only a few feet high but can travel at speeds comparable to a jet plane (up to 800 km/h). As they approach shallower coastal waters, their speed decreases, but their height dramatically increases, leading to the devastating wall of water that strikes the shore.