What was the magnitude of the 2004 Indian Ocean Tsunami?

• 7.4 -7.6

• 8.1 - 8.3

• 7.7 - 8

• 9.1 - 9.3

What is an extreme natural event?

• An event the rarely occurs and can have detrimental effects on the environment.

• Events that occur everyday

• Events that are caused by humans

Which of the following is not an extreme natural event?

• Tsunami

• Hurricane

• Rain

• Earthquake

The epicentre of the earthquakes located.....

• 160 km off the coast of Thailand

• 160 km off the coast of Sumatra, Indonesia

• 155 km off the coast of Sumatra Indonesia

What is the first stage of the formation of a Tsunami?

• The tectonic plate pushes the water in a particular direction.

• Gravity pushes the water outwards

• Energy from the seabed vertically jolts the seabed, displacing hundreds of cubic kilometres of water

What can cause a tsunami?

• Landslide

• Underwater earthquake

• Volcanic eruption

• All of the above

Do all undersea earthquakes trigger a tsunami?

• YES

• NO

Tags

NGSS.MS-ESS3-2

What is the deadliest tsunami ever recorded?

• The 1782 South China Sea tsunami

• The 1868 northern Chile tsunami

• The 1883 South Java Sea tsunami

• The 2004 Indian Ocean tsunami

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

Shaking from the earthquake lasted.........

• 8 -10 minutes

• 12 - 15 minutes

• 5 - 7 minutes

• 4 - 3 minutes