what we have done

1. el nino world map completed - Lukas
2. la nina world map started not completed - Lukas
3. la nina australia map started but not complete - Tom
4. el nino australia map not started yet
5. el nino fact sheet started but not complete - David
6. la nina fact sheet started but not complete - David

exam prep

1. 1032 hPa
2. The Western side of Australia is experiencing rain
3. 37,0 S 141 E
4. New Zealand’s wind is a lot faster than Australia as the lines are closer
5. May
6. Northern hemisphere
7. July and August
8. 100 mm 27.5 degrees
9.14 degrees north, near the equator becuse it has tropical weather (rains in summer) 

2.5

1. A violent storm, often of vast extent, characterized by high winds rotating about a calm center of low atmospheric pressure. This center moves onward, often with a velocity of twenty or thirty miles an hour.

2. near the equator

3. northern Australia

4.

5. central cyclones

6. tropical cyclones develop in the tropical regions of the world. Heat from the sun causes warm, moist air to rise into the atmosphere. As the air rises, a low pressure system forms and condensation occurs, which releases latent heat causing the air to rise further into the atmosphere. If the air pressure in the upper atmosphere is high, then the rising column of warm air will spiral outwards in the upper atmosphere and air will rush from the surface to replace it, forming a tropical cyclone 

2.4

1. a flood is caused when water inundates land which is normally dry.

2. flash flooding is when small rivers and streams are unable to cope with the sudden volume of water caused by heavy downpours so flooding results.

3. inland rivers are more subjective to floods because they have “walls” so fill up and coastle rivers tend to be short and fast flowing so it takes less time for the flooding to go away

4. destroys crops, damages buildings and towns have to be evacuated

5. more rain, more water, went for longer, higher flood height

6. economic – businesses had to evacuated and couldn’t make money, social – people would’ve died, environmental – the land would’ve changed due to the amount of water on the land.

7. a) 1000 km and 100 km
    b) 900 km
    c) because the water has somewhere to go in coastal rivers but inland rivers have nowhere to go 

2.3

1. hail with a diameter of 2 cm or more, wind gusts of 90 km per hour or more, flash flooding and tornadoes

2. lightning strikes

3. warm humid air that is pushed up into the atmosphere by converging surface winds

4. when the air rises the moisture and then condense releasing heat energy

5. when the water freezes forming ice crystals potentially making hail

6. they are most likely to form in the clouds

7. the bureau of meteorology

8. because they can form in minutes and form faster than we can predict it.

9. a) 13 November 2006
    b) Sydney, Newcastle and Wollongong
    c) 2:10
    d) get to a safe place

2.8

1. a)     i) 1016
            ii) 1010
            iii) 1018
            iv) 1022
    b) Adelaide
    c)

todays weather - 4/5/11

partly cloudy with a small chance of rain. about 20 degrees. wind is blowing from south-west which means cold winds will be blowing. stratus clouds. 60-70% humidity. 40% chance of rain

S

US Storms

•       178 dead

o   Alabama 128 dead, risen from 61 before

o   Mississippi 32 dead

o   Georgia 11 dead

o   Virginia 1 dead

•      The National Weather Service (NWS) had preliminary reports of more than 300 tornadoes since storms began on Friday, including more than 130 on Wednesday alone.
•       450 mm of rain fell from Sunday to Tuesday
•             $75 million dollars in Georgia of damage
•            Winds of 175 miles per hour

2.2

1. a landslide is the movement of a mass of rock or sections of the Earth’s crust under the force of gravity.

2. heavy rainfall saturating the soil, vibrations from earthquakes and undercutting of banks and cliffs from waves or rivers.

3. construction of roads and railways on hillsides along with building works can weaken hillsides and make them more vulnerable during heavy rainfall.

4. earthquakes are intra-plate tension where movements occur along cracks and faults in the Earth’s crust. The force is measured on the Richter scale

5. intra-plate tension when movements occur along cracks and faults in the Earth's crust

6. once each 15 months

7. improved building codes and practices, and closer monitoring of seismic activity.

8. a landslide is movement on top of the Earth’s crust and an earthquake is movement under the Earth’s crust

9. a tsunami is the movement of the ocean bottom displaces water on the surface, forming a tsunami which moves outwards in all directions from the centre of the disturbace.

10. earthquake, landslide or volcano

11. first sudden shifting of the continental plates causes earthquakes, forcing sea water above to rise forming race. Then waves move rapidly in deep ocean reaching speeds of 800 kph. As the waves near land they slow to about 45 kph but are squeezed upwards, increasing in height. The waves start to head inland and destroy anything in their paths.

 

12. shake, drop and roar

13. the indo-Australian plate was sliding under the Eurasion plate

14. 23, 20 minutes

15. the wave slowed down to 100 kph and surged inland causing destruction to coastal communities.

16. they coordinated the development of a tsunami warning system for the indian ocean.

17. he is a Wollongong university geoscience professor, he has warned that tsunamis triggered by New Zealand’s alpine fault line could strike NSW as often as once every 500 years.

18.          a) 15 N, 100 E

               b)              i) 2hours

                                ii) 7 hours

                                iii) 5 hours

                                iv) 9 and a half hours

19. in december 1989 the community of newcastle was struck by an earthquake tat measured 5.6 on the richter scale, killing 13people and injuring more than 120. it also impacted on buildings, with 35,000 homes and 3,000 other buildings being moderately to seriously damaged in newcaslte, and a total of 70,000 buildings in the region sustaning minor damage. This is extremely devastating as alot of people has gotten hurt or even dead. also alot of people have no homes to go to and dont know what to do.
20.

My Tsunami sign

Google's Tsunami Sign