Chapter 8.7 - Climatology

Question 1

How far does the Tropics cover the earth’s surface?

Answer 1

30°N to 30°S.

Question 2

In the middle latitudes, the weather is mainly governed by what (2)?

Answer 2

• Frontal Depression.

- Subtropical Ridge.

Question 3

What is the name given to the zone of low pressure between Frontal Depression and Subtropical Ridge?

Answer 3

Equatorial Trough.

Question 4

During Summer Time in the Southern Hemisphere, where does the Equatorial Ridge form in Latitude?

Answer 4

15°S.

Question 5

During Winter Time in the Southern Hemisphere, where does the Equatorial Ridge form in Latitude?

Answer 5

15°N.

Question 6

What are Trade Winds?

Answer 6

Wind in the Tropics outside the 15° zone either side of the Equator blowing towards the East.

Question 7

In Latitude, where does the Trade Wind centre along the Subtropical Ridge?

Answer 7

32°N and 32°S.

Question 8

What happens to Trade Winds which in contact with Friction from the Surface in the Southern Hemisphere?

Answer 8

Wind deflects to the right becoming South-East Trade Winds.

Question 9

What happens to Trade Winds which in contact with Friction from the Surface in the Northern Hemisphere?

Answer 9

Wind deflects to the left becoming North-East Trade Winds.

Question 10

Name two common meanings for Monsoon?

Answer 10

• The Season.

- Seasonal Winds.

Question 11

Name three characteristics of an Equatorial Trough?

Answer 11

• Large Areas of Convective Activity.
• Light and Variable Winds.
• High Temperatures.

Question 12

What does ITCZ stand for?

Answer 12

Intertropical Convergence Zone.

Question 13

Define ITCZ?

Answer 13

Narrow ‘frontal’ zone within the Equatorial Trough.

Question 14

Name three special terminology that is used to identify the intensity of cyclones that occur in the tropics?

Answer 14

• Tropical Disturbance.
• Tropical Depression/Storm.
• Tropical Cyclone.

Question 15

Name the four stages of a Tropical Cyclone?

Answer 15

• Formative.
• Developing.
• Mature.
• Dissipating.

Question 16

During the Formative Stage of a Cyclone, what will happen to Surface Pressure?

Answer 16

Fall close to 1000hPa.

Question 17

During the Formative Stage of a Cyclone, what will happen to Windspeed?

Answer 17

Increase to Gale Force (34kts).

Question 18

True or False. The Formative Stage of a Cyclone will take between a few hours to several days to complete?

Answer 18

True.

Question 19

During the Developing Stage of a Cyclone, what will happen to Central Pressure?

Answer 19

Falls below 1000hPa.

Question 20

During the Developing Stage of a Cyclone, what will happen to Windspeed?

Answer 20

Above Gale Force (34kts) and Hurricane Force (64kts) in some places.

Question 21

During the Mature Stage of a Cyclone, what will happen to Surface Pressure?

Answer 21

Stops falling and remain constant between 975hPa and 950hPa.

Question 22

During the Mature Stage of a Cyclone, what is the average and large sizes of a Cyclone?

Answer 22

600 to 1100 miles in diameter.

Question 23

Name three different decaying mechanisms for a Tropical Cyclone?

Answer 23

• Movement over Cold Water.
• Movement over Land.
• Strong Upper-level Windshear.

Question 24

During the Dissipating Stage of a Cyclone, what will happen to Surface Pressure?

Answer 24

Begin to rise.

Question 25

On average, how long does a Tropical Cyclone last for?

Answer 25

5 to 6 Days.

Question 26

Name three hazardous weather in coastal regions?

Answer 26

• Showers.
• Fog.
• Sea Breezes.

Question 27

Name two hazardous weather in inland Australia?

Answer 27

• Dust.

- High Temperatures

Question 28

Name four hazardous weather in mountains?

Answer 28

• Low Cloud.
• Low Visibility.
• Mountain Wave Turbulence.
• Thunderstorms.