GRADE 7 REVISION TERM 2

What was the magnitude of the 2004 Indian Ocean Tsunami?

• 7.4

• 8.1

• 7.7

• 9.1

What is frequently a warning sign of an impending tsunami?

• Winds suddenly change direction

• The sky suddenly clears

• Seawater suddenly retreats from the shore

• All of the above

The huge broken pieces or the outer crust of the earth.

• mantle

• core

• plates

• asthenosphere

The kind of relief that gives immediate help

• short term

• emergency

• long term

• evacuation

Earthquake can be detected with the help of an instrument known as

• Barometer

• Anemometer

• Seisometer

• Thermometer

The kind of relief that gives immediate help

• short term

• emergency

• long term

• evacuation

Tsunami can be defined as

• Giant waves that hit the sea shore

• A giant wave or a series of waves caused by an earthquake or a volcanic eruption the sea bed

• Waves caused by wind, and rotation of the earth

Sumatra plate and Indian Ocean plates resulted in the formation of the Indian Ocean Tsunami of 2004.

• True

• False

Why was the Tsunami of 2004 the most devastating one?

• The tsunami affected several countries such as Indonesia, India, Sri Lanka, Myanmar, Thailand, Malaysia, Somalia, Maldives, and far as Mexico.

• The coastal areas around the plate boundaries are low lying.

• The coastal areas are densely populated.

• All of the above

How can damaged caused by Tsunami be reduced?

• By helping people

• By predicting and preparing

• By calling people for help

• By stopping the Tsunami waves