Which of the weather maps represents the conditions necessary for your selected extreme natural event? Explain how the pressure systems on your selected.

Slides:



Advertisements
Similar presentations
Before During and after TC Heta.. Before Intense heating from the sun warmed the ocean to 27 degrees which resulted in rapid evaporation. The ITCZ and.
Advertisements

Unit 3.c. – Extreme weather events and their impact on people and property -Hurricane formation & structure -Case study of one hurricane to illustrate:
Weather Review Battleship!. Air Basics As the temperature of a gas increases what happens to its volume? Increases.
Objectives Identify the conditions required for tropical cyclones to form. Describe the life cycle of a tropical cyclone. Recognize the dangers of hurricanes.
Hurricane Lab Unit 4.
The Hydrological Cycle
Weather Maps Isolines- Lines which connect points
Factors which influence climate Today’s Aim - 1.To learn the different factors that affect climate. Keywords Latitude, Equator, Sea Breeze, Prevailing.
Sequence of Natural Events n Before: n Atmospheric pressure starts to fall and winds increase in strength.
Reviewing what we have learned. Using one white board for you and a table partner, two white boards for each table. Write your answers to the following.
Earth’s Weather and Climate
Global Patterns & Relative Humidity
What Causes the Wind Worksheet.
Catastrophic Events  Catastrophic Event –Any event naturally occuring or caused by human action that:  Causes severe damage to the land  Endangers.
The Atmosphere B6: Storms. Storms Storm – A violent disturbance in the atmosphere as the result of sudden changes in air pressure and rapid air movement.
Atmospher e & Weather Atmospher e & Weather 2 Clouds & Precipitati on Severe Storms Severe Storms 2 Climate $1 $2 $5 $10 $20.
Research Class notes Cause and Effect of Catastrophes.
Tropical Cyclones Quiz!.
Unit 19: Natural Disasters pt 1 NATURAL DISASTERS An event that occurs naturally and affects the earth’s surface and environment –Man made disasters.
Chapter 11 Notes Hurricanes. Tropical Storms Boris and Christiana Together-2008 Profile of a Hurrican Most hurricanes form between the latitudes of 5.
Hurricanes.
Earth’s Resources, Interactions, and Cycles
Cyclones. What are cyclones? 0 Cyclones are giant, spinning whirlwind storms. In order for a cyclone to be identified as a cyclone, it must be travelling.
S6E2.c. relate the tilt of earth to the distribution of sunlight through the year and its effect on climate.
Severe Weather. Thunderstorms Small intense systems that can produce strong winds, rain, lightning and thunder. Need 2 conditions –Air near surface needs.
Severe Weather Patterns. Hurricanes Form Over Warm Ocean Water Near the equator, warm ocean water provides the energy that can turn a low-pressure center.
Pressure, Fronts, air masses
Severe Weather.
Lecture #2 Weather. Convection and Atmospheric Pressure Much of solar energy absorbed by the Earth is used to evaporate water. – Energy stored in water.
Air Masses and Fronts Air masses are classified according to temperature and humidity 4 major types of air masses: Maritime tropical: form over the ocean.
The Causes of Weather May Air Masses  The air over a warm surface can be heated causing it to rise above more dense air.  Air Mass: A very large.
Do Now: Analyze the following images
Hurricane Formation El Nino. Warm-up: water cycle review. Label the arrows with these terms: What are the 2 possibilities for precipitation that hits.
Ocean Currents Purpose: To identify, describe and list factors that control ocean currents To explain how ocean currents affect climate in San Diego and.
Tropical Storms SWBAT identify where tropical cyclones originate; describe the life cycle of a tropical cyclone; recognize the dangers of hurricanes.
A hurricane is a huge storm! It can be up to 600 miles across and have strong winds spiralling inward and upward at speeds of 75 to 200 mph. Each hurricane.
Hurricanes.
Chapter 17 Section 2 Severe Weather.
OBJ: Given notes and activity sheet SWBAT explain how a hurricane, blizzard and the lake-snow effect forms as well as emergency preparation for these storms.
In this presentation you will: The Water Cycle explore the stages of the water cycle Next >
Hurricanes, Thunderstorms, & Tornadoes S6E4 I can relate unequal heating of land and water surfaces to form tornados and thunderstorms. I can relate how.
Climatic Hazards: Causes and Concerns. Introduction Cyclones and Hurricanes Floods Drought Impacts Strategies.
What does distribution mean? Map to show distribution of tropical revolving storms Map from memory Questions 1. What is the relationship between the.
Section 1.2 The Causes of Weather
UNIT 1: Weather Dynamics Chapter 1: Inquiring about Weather The Causes of Weather Chapter 2: Weather Forecasting.
The water cycle: is there a beginning? The water cycle: PRECIPITATION The process in which water (rain, sleet, snow or hail) falls from clouds in the.
Hurricanes Chapter 17 Sections 2 & 3 Pages Chapter 17 Sections 2 & 3 Pages
Guided Notes about Tropical Storms Chapter 13, Section 3.
Classwork Students will take turns reading a paragraph and another student will summarize for the group what was just read. After reading the section,
Weather and Climate Unit Investigative Science. * Normally peaceful, tropical oceans are capable of producing one of Earth’s most violent weather systems—tropical.
{ 4.2 Low-pressure systems can become storms.  A tropical storm is a low-pressure system that starts near the equator and has winds that blow at 65km/h.
Chapter 4 Global Climates and Biomes. Global Processes Determine Weather and Climate Weather- the short term conditions of the atmosphere in a local area.
1.2 The Causes of Weather The amount of solar energy that Earth receives every year is the same amount that Earth radiates back into space. The distribution.
IN p 133 Explain the difference between the vocabulary words in each of the following sets: 1.air mass, front 2.Humidity, relative humidity 3.Relative.
III. Water and Climate.
The Water Cycle.
Tropical Revolving Storms
Section 1.2 The Causes of Weather
Severe Weather Patterns
Severe Weather Patterns
Air Masses and Fronts How do Scientists classify the air masses that affect the weather in North America? An air mass is a huge body of air with similar.
‘Miles Apart, but close at heart’
What is Weather?
Severe Weather Patterns
Thunderstorms Small intense systems that can produce strong winds, rain, lightning and thunder. Need 2 conditions Air near surface needs to be warm and.
Severe Weather.
Thermal Energy Transfer
KEY IDEA: Weather Hazards
The Water Cycle.
13.3 Tropical Storms.
Presentation transcript:

Which of the weather maps represents the conditions necessary for your selected extreme natural event? Explain how the pressure systems on your selected map indicate the possibility of the extreme natural event. MAP B. Strong low centred over Pacific Islands. Specifically, it is in the SPCZ South Pacific Convergence Zone, where Tropical Cyclones are born. It of over 23.5o Tropic of Capricorn. Warm air from the equator falls at this point and causes lows. The isobars are close together indicating high wind strength. Migrated down from the Tropics gathering strength and energy as it moves. These factors may indicate the possibility of a Tropical Cyclone.

Describe in detail how climatic or atmospheric processes produce your selected extreme natural event. You may answer in paragraph form or use a combination of diagrams and notes. Intense heating by the sun raises the ocean temp to 27o. Evaporation occurs causing humidity. A low pressure area forms along the SPCZ, drawing winds into it. The Coriolis Effect makes air circulate clockwise (S Hem). Surface air rises due to warming by the sea and the sun. Pressure falls and winds strengthen. Air cools as it rises, condensation occurs, clouds form and rain falls. A Jet Stream, a band of strong winds that circles the Earth at high altitudes, passes over the centre of a low pressure area. It accelerates the speed of the rising air by sucking it upwards.

Briefly describe ONE action people can take before the event and ONE action people can take after the event to DECREASE the effects of your selected extreme natural event. Briefly describe ONE action people can take before the event and ONE action people can take after the event to INCREASE the effects of your selected extreme natural event. Specific references to a named case study must be included. BEFORE: Better preparation and emergency civil defense planning. Samoa – information on what to do in the event of a tropical cyclone is written in the back of school books. AFTER: Developing a sound infrastructure, such as tarmac roads and dams for flood control. Fiji – infrastructure is continually rebuilt and redeveloped. BEFORE: Poor planning. Population concentration in coastal towns and cyclone prone areas exposes greater numbers to hazards. Fiji – main towns are located on the narrow coastal lowland area. This impacts negatively on tourism - Cyclone Kina Solomon Islands – years of ethnic tension had rendered the country leaderless and dependent on foreign aid. AFTER: Reluctance to adopt new methods of preventing damage. Tonga - the economies of many Pacific Islands are dominated by coconuts and sugar and farmers are reluctant to change to ground crops which are more cyclone resistant.

Describe FOUR effects on the land of your selected extreme natural event. You may answer in paragraph form or use a combination of diagrams and notes. Specific references to a named case study must be used. EFFECT ONE On high and low islands, wind strips vegetation of leaves and fruit. Many trees are felled. Fruit bats may be killed, reducing pollination of native vegetation. Low lying islands Santa Cruz – Tropical Cyclone Zoe in 2002 threatened low volcanic islands. EFFECT TWO A storm surge may sweep over low islands, washing away soil. Soil is also damaged by salination as a result of the salty water. Tikopia – Tropical Cyclone Zoe in 2002 flooding contaminated fresh water lakes. Gardens were destroyed and kasava crops were turned black, taking three months to grow back. EFFECT THREE On high islands, rivers flood and landslips erode slopes. When the rivers recede they leave behind deep layers of mud, rocks and tree logs. Tikopia – Tropical Cyclone Zoe in 2002 flooding swamped villages and the land. EFFECT FOUR Coastal erosion strips beaches of sand. Live coral reefs are damaged.

Describe TWO effects on economic activities of your selected extreme natural event. You may answer in paragraph form or use a combination of diagrams and notes. Specific references to a named case study must be used. EFFECT ONE Damage to buildings and the high cost of reconstruction. Fiji – Tropical Cyclone Cliff in 2007 destroyed houses and a school. Niue – Tropical Cyclone Heta in 2004 destroyed the town of Alofi. Tikopia – Tropical Cyclone Zoe in 2003 cut the island off from the world for several days. EFFECT TWO The government has to assess damage and international aid may be necessary if the economy cannot cope. Subsistence economy will recover reasonably quickly, but the cash economy might need help. The high cost of reconstruction increases foreign debt, because it is almost totally dependent on international aid. Solomon Islands – years of ethnic tension had rendered the country leaderless and dependent on foreign aid.

Describe TWO effects on social activities of your selected extreme natural event. You may answer in paragraph form or use a combination of diagrams and notes. Specific references to a named case study must be used. EFFECT ONE People shelter in the strongest buildings, often stone churches. People are fearful and may pray for their survival. The eye brings a period of relief, then the full fury of the Cyclone returns. However, in the end life will go on because Tropical Cyclones are a part of the Pacific way of life. Solomon Islands – Tropical Cyclone Zoe no one was killed because the Islanders have a long tradition of coping with cyclones. EFFECT TWO Deaths and injuries are caused by collapsing buildings and flying sheets of roofing iron. Grief and shock affect many people. Solomon Islands – Tropical Cyclone Namu killed 100 people. Fiji – Tropical Cyclone Ami in 2003 killed 11 people.