Weather Journal - 11th May 2011

11/05/11 Weather Report Partly clouded with altostratus'. The chance of late showers. Winds westerly averaging up to 35 km/h. Max 17. Min 7.

2.5 Question

1. A tropical cyclone is a storm system characterized by a large low-pressure centre and numerous thunderstorms that produce strong winds and heavy rain.
2. They occur anywhere in the tropics.
3. Queensland, Northern Territory and North Western Australia.
4. out of the 10 that form in the Australian region 6 of them cross the coastline.
5. Hurricanes or typhoons.
6. a. tropical    b. moist    c. heat     d. high    e. spiral   f. surface
7. The eye is middle of the cyclone and it is calm and has clear sky.
8.
9. By moving  over land, or move to cooler oceans, they tend to dissipate or lose energy as the supply of warm, moist air is no longer present.

2.8 Questions

1. a. i. 1017

ii. 1010

iii. 1018

iv. 1021

b. Adelaide

c. Melbourne will be experiencing fine weather but late rain and possible thunder storms.

d. i. trough

ii. ridge

iii. trough

e. Hobart because it is in a lower pressure area and winds travel into a low and clockwise around it.

Weather Journal - 4th May 2011

It is a cold dry day and the wind is coming from the south-west. The clouds in the sky are stratus. The air temperature is 20 degrees and there is a 40% chance of showers. 60% humidity.

2.1 Questions

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, vibrations of Earthquakes and undercutting of banks and cliffs from waves or rivers.

3. The construction of roads or railways on hillsides and mining activities.

4. An earthquake is a violent or sudden shaking of the ground, causing great destruction, as a result of movements within the earth’s crust.  They are measured on the Richter scale.

5. Intra-plated tension

6. Every 15 months, and they are too small to be noticed by people and communities.

7. 13 people were killed and thousands of buildings had damage taken to them.

8. Landslides are on the Earth’s crust and earthquakes are under the crust.

9. A tsunami is a really big wave that hits the shore and causes destruction.

10. Sudden shifting of continental plates, earthquake and landslides under the ocean.

11. Continental plates causes earthquake, forcing sea water above to rise, forming waves. Waves move rapidly in deep ocean reaching speeds of 800 kph. Then the waves head inland destroying everything in the path.

12. Shake, Drop and Roar.

13. An underwater earthquake measuring 9.3

14. 23 stations and it took 20 mins.

15. The waves are pushed up out of the ocean by the shallow water making the actual wave.

16. The United Nations responded by coordinating the development of a tsunami warning system for the Indian Ocean.

17. He is a geoscience professor and he provides tsunami warnings that could hit Australia.

18. a. 10°N 110ᵒE

b. i. 2 hours

ii. 9 hours

iii. 5 hours

iv. 9.5 hours

19. On the 30^th of July, 1997 a catastrophic landslide occurred in the village of Thredbo. Two ski lodges collapsed and 18 people died. About 3,500 tonnes came down the slope. The Australian Government has spent $40 million to help all of Thredbo out with the rebuilding of the village.

20.

Deadly storms in the US

- at least 318 people have died, most of them in Alabama
- devastation has also been reported in Tennessee, Mississippi, Georgia and Virginia.
- a state emergency has been declared in 7 states and federal aid money is being sent to Alabama
- the causes include twisters, tornadoes and major storms
- millions of homes in Alabama are still without power
- some towns like Hackleburg have reported 90% damage
- 2,000 soldiers have joined the emergency workers as they continue to search for survivors.
- A twister was said to have been one mile wide

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2.1 Natural hazards in Australia

1. A natural hazard is a threat of a naturally occurring event that will have a negative effect on people or the environment.
2. A natural hazard does not harm people but it can harm the environment. A natural disaster causes casualties and sometimes economic downpour.
3. those related to weather and climatic factors and those related to movements in the Earth's crust.
4. those related to weather and climatic factors - drought, flood, heatwaves, bushfires, strong winds, storms, tropical cyclones and tornadoes
those related to movements in the Earth's crust - landslides, earth tremors, earthquakes and tsunamis.
5. It effects more people.
6. Drought and bushfires.
7. Social hazards - loss of life
Economic impacts - loss and destruction of property
Environmental impacts - the death of and injury of animals
8. so they can be prepared for what can happen to them
9. it is the amount of natural hazards in a certain postcode and then it is put  on a map.
10.a. Tropical cyclones, Flood and bushfire
b. heatwaves
11. a. they can focus on areas that need more money to help the community out.
b. the same ^^
c. they can put more emergency centres in the more dangerous places for casualties that are predicted to come.
d. insurance companies can postion themselves to get more money for the company.