UNIT 1 - Extreme Weather

Select three natural hazards tropical cyclones may bring

• strong winds

• storm surges

• drought

• intense rainfall

How warm does the air have to be that rises from the ocean to form a tropical cyclone?

• 2 degrees celsius

• 100 degrees celsius

• 26.5 degrees celsius

• 1000 degrees celsius

What causes the tropical cyclone to spin?

• wind energy

• Coriolis effect

Once a tropical cyclone reaches landfall, it loses energy because...

• it not longer has cold air rising from the ocean to power it

• it not longer has warm air rising from the ocean to power it

What is the thick band of cloud called that circles the eye?

• eye corridor

• eye wall

• eye fence

Swirling around the centre of the tropical cyclone are ________ __________ – high banks of cloud that can stretch out 1,000km from the cyclone centre which produce heavy rain and strong winds.

• rain bands

• the eye

• eye wall

What are the two other names tropical cyclones are known under?

• tornado

• hurricane

• typhoon

• tsunami

Tropical cyclones do not form exactly on the equator, between which two lines of latitude do tropical cyclones form?

• 30 - 100 degrees (N&S)

• 5 - 50 degrees (N&S)

• 5 - 30 degrees (Just in the South)

• 5 - 30 degrees (N&S)

Give three conditions that are needed for a tropical cyclone to form.

• weak winds

• strong winds 118km/hr (74mph)

• coriolis effect

• 5 - 30 degrees (N&S)

Which scale is used to measure tropical cyclones?

• The Simpson Scale

• Saffir-Simpson Hurricane Wind Scale

• The Moment Magnitude Scale