TROPICAL CYCLONE Term 3 Flashcards Preview

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Flashcards in TROPICAL CYCLONE Term 3 Deck (14):
1

What is a Tropical Cyclone


* Rapid rotating storm
* Low pressure centre
* Strong winds
* Thunderstorms that bring heavy rain

2

What other names do we use for a Tropical Cyclone

Depending on Strength and location it is called
* Hurricane
* Typhoon
* Severe Cyclonic Storms

3

What is a Hurricane and where?

It is a Tropical Cyclone that starts in the Atlantic Ocean and in North-East Pacific Ocean

4

What is a Typhoon and where?

Starts in North West Pacific Ocean

5

Where do we get Severe Cyclonic Storms / Tropical Cyclones

South Pacific and Indian Ocean

6

Name Characteristics of Tropical Cyclo

Develop over ocean near EquatorWarm air over

7

Discuss the EYE and SURROUNDING area of the Tropical Cyclone(Long Q together with previous cards)

Eye
* centre of Cyclone
* Calm, Cloudless,
* wide as 35 - 50 km
* Pressure below 1000 hPa
Surrounding area -
* Storms, winds of 120 - 280 Km/h for hours or days
* move slowly forward 15-20 km/h
* Subside when reaching land or cool water
* Tidal waves along coast, lots of damage and torrential rain

8

Name the biggest cyclone to hit SA

DOMOINA- 25 January 1984 came in near Maputo

9

What happened / consequences or effects


* Storms with high winds and rain
* 540 mm measured in 24 hours
* Rivers flooded, bridges washed away that made rescue attempt difficult
* Villages near rivers destroyed
* Vegetation near rivers washed away
* 150 milj Rand damages to sugar farms
* 200 people died people and
* animals washed out to sea
* Diseases spread by water caused more deaths

10

Why do Cyclones get woman names

Because they are unpredictable and changeable

11

Name the Cyclone that were named after a man

Hugo in US east coast 1989

12

Safety measures to follow are before storm


* Keep radio and TV on for any weather updates
Before the flood:
* Fill fuel tanks and check battery and tires
* Build up drinking water
* Get food that not cook or freeze = canned food
* Have torch, first aid kit, fire extinguisher, battery radio
* Board all windows Evacuate low lying areas

13

Safety measures during storm

DURING THE STORM:Stay indoorsListen to radio for weather updateListen for community help like Red Cross

14

Safety measures after storm

AFTER THE STORM:
* Stay of roads
* Damaged power, water and sewerage line to be reported
* Care-full of fire and falling objects
* Use telephone only for emergency