Q.1
True or false: People on the beach always see a rising sea as the tsunami approaches, and this helps to warn them. *

Q.2
For a person near the sea, which of these is a reliable warning about at oncoming tsunami? *

Q.3
Tsunami-warning systems operate automatically because *

Q.4
Which factor does not influence the height of a tsunami? *

Q.5
Even though a tsunami may be barely perceptible as it crosses open ocean, it can carry a vast amount of energy. Why? *