Waiting for the Waiting for the Rains: The Effects Rains: The Effects

of Monsoons in of Monsoons in South AsiaSouth Asia

Write the definition of Write the definition of monsoonmonsoon

Winter & Summer Winter & Summer MonsoonsMonsoons

Answer box OneAnswer box One

Box 2Box 2

Box 3Box 3

Box 4Box 4

a. Changes in Atmospheric Pressure Create a. Changes in Atmospheric Pressure Create MonsoonsMonsoons

i. Falling i. Falling cool cool air creates high pressure air creates high pressure areas.areas.

1. Due to the 1. Due to the downwarddownward pressure, very pressure, very little surface air can rise into the little surface air can rise into the upper atmosphere to form clouds. upper atmosphere to form clouds.

2. Typically 2. Typically sunnysunny days and no rain. days and no rain.

ii. Rising ii. Rising warmwarm air creates low pressure air creates low pressure areas.areas.

1. If the 1. If the risingrising air is moist, clouds form air is moist, clouds form bringing rain. bringing rain.

a.a. Atmospheric PressureAtmospheric Pressure: the weight of the : the weight of the atmosphere pressing down on any point of atmosphere pressing down on any point of the surface of Earth. Air sinks in high-the surface of Earth. Air sinks in high-pressure areas, and few clouds form. Air pressure areas, and few clouds form. Air rises in low-pressure areas to form clouds rises in low-pressure areas to form clouds that produce rain.that produce rain.

b.b. MonsoonMonsoon: a seasonal wind. Summer : a seasonal wind. Summer monsoon winds in South Asia usually bring monsoon winds in South Asia usually bring rain to that region. rain to that region.

c.c. Orographic effectOrographic effect: the precipitation that : the precipitation that occurs when moist air rises up the side of a occurs when moist air rises up the side of a mountain. As the air rises, it cools down mountain. As the air rises, it cools down and releases most of its moisture as rain or and releases most of its moisture as rain or snow.snow.

d.d. Rain shadowRain shadow: a dry area on the downwind : a dry area on the downwind side of a mountain.side of a mountain.

Box 5Box 5

Box 6Box 6

Orographic EffectOrographic Effect

Importance of MonsoonsImportance of Monsoons

http://www.bbc.co.uk/learningzone/clips/monsoon-rains-support-the-indian-rainforest/8987.html

Read section 27.3 & Read section 27.3 & determine which image determine which image

& picture belong & picture belong

III. The Wet Months in III. The Wet Months in Dhaka, BangladeshDhaka, Bangladesh

a. One of the Worlda. One of the World’’s Wettest Capitalss Wettest Capitalsi. Most of Bangladesh lies on a i. Most of Bangladesh lies on a river deltariver delta

that rises dangerously high during that rises dangerously high during monsoon rains.monsoon rains.1. Result: possible 1. Result: possible floodingflooding causing causing

difficult rice cultivation. difficult rice cultivation. ii. Dhaka: ii. Dhaka:

1. Located in the center of 1. Located in the center of BangladeshBangladesh..2. One of the 2. One of the wettestwettest climates on Earth. climates on Earth.3. Up to 3. Up to 8080 inches of rain fall each year. inches of rain fall each year.4. Most rain during 4. Most rain during summersummer months. months.5. Weather is 5. Weather is drydry from November from November to to

April. April. iii. Tropical cyclones (aka Hurricane)iii. Tropical cyclones (aka Hurricane)

1. City is lashed by high 1. City is lashed by high windswinds and and waves waves because city is situated at sea because city is situated at sea level.level.

b. Life Depends on the Rainsb. Life Depends on the Rainsi. Bangladeshi. Bangladesh’’s economy depends on s economy depends on

agricultureagriculture..1.1. 3/5th 3/5th’’ss of the population farm the rich of the population farm the rich

delta soil, relying on hopefully delta soil, relying on hopefully consistentconsistent monsoon rains to water their monsoon rains to water their fields. fields. a. If late many crops a. If late many crops suffersuffer. . b. If too much rain, b. If too much rain, floodingflooding occurs. In occurs. In

Dhaka, flooding is an issue.Dhaka, flooding is an issue.i. Planting and harvesting becomes i. Planting and harvesting becomes impossible.impossible.ii. Traffic halts.ii. Traffic halts.iii. Schools and businesses shut iii. Schools and businesses shut down.down.iv. Floodwaters iv. Floodwaters pollutepollute city city’’s s drinking supply, encouraging disease drinking supply, encouraging disease to rapidly spread.to rapidly spread.v. Dhaka life lesson: rains that bring v. Dhaka life lesson: rains that bring life to local life to local fieldsfields can also end life in can also end life in the city.the city.

Read section 27.4 & Read section 27.4 & determine which image determine which image

& picture belong & picture belong

IV. The Dry Months of IV. The Dry Months of Jodhpur, IndiaJodhpur, India

a. A City on the Edge of a Deserta. A City on the Edge of a Desert

i. Known as the i. Known as the ““Blue CityBlue City”” because many because many of the houses are painted blue.of the houses are painted blue.

ii. Jodhpur sits at the eastern edge of the ii. Jodhpur sits at the eastern edge of the TharThar Desert Desert in northern India.in northern India.

iii. Region is leading iii. Region is leading producer producer of cattle, of cattle, spices, and grains. spices, and grains.

iv. Typical iv. Typical semiarid semiarid climate, with hot, dry climate, with hot, dry weather throughout most of the year.weather throughout most of the year.

v. Average yearly rainfall = v. Average yearly rainfall = 14 14 inchesinches

vi. vi. SummerSummer monsoons bring rain from June monsoons bring rain from June to September.to September.

vii. Average temperature stays above vii. Average temperature stays above 6060 degrees. degrees.

The The ““Blue CityBlue City””

b. Water is a Critical Resourceb. Water is a Critical Resource

i.i. 80% of people around Jodhpur are 80% of people around Jodhpur are farmersfarmers. .

1. Farming is difficult in this 1. Farming is difficult in this drydry region. region.

2. Farmers depend on 2. Farmers depend on monsoonsmonsoons for water. for water.

3. If too little water, crops fail and 3. If too little water, crops fail and drinkingdrinking water is in short supply.water is in short supply.

4. When food runs out, some families survive by 4. When food runs out, some families survive by eating eating samassamas, a wild grass. , a wild grass. DiseaseDisease spreads spreads easier when people are weak from hunger.easier when people are weak from hunger.

ii. The people of Jodhpur have adapted to their ii. The people of Jodhpur have adapted to their climate.climate.

1. They raise livestock capable of surviving on 1. They raise livestock capable of surviving on nativenative plants when crops fail. plants when crops fail.

2. Farmers use 2. Farmers use drip drip irrigation (drip water irrigation (drip water directly onto roots) to conserve water. directly onto roots) to conserve water.

a. South Asia:a. South Asia:

i. Monsoons affect the climate of i. Monsoons affect the climate of South Asia.South Asia.

ii. Differences in atmospheric ii. Differences in atmospheric pressure between the pressure between the landland and and seasea cause the Summer cause the Summer Monsoons bringing welcome Monsoons bringing welcome rain rain and deadly and deadly floodsfloods to to coastal cities.coastal cities.

iii. The orographic effect shapes iii. The orographic effect shapes the climate of South Asia. the climate of South Asia.

b. Other regions also have b. Other regions also have monsoons:monsoons:

i. November to April: i. November to April: northern northern AustraliaAustralia..

ii. May to July: ii. May to July: West African West African coast.coast.

iii. Middle of summer: iii. Middle of summer: ArizonaArizona. .

c. Everywhere: the climate c. Everywhere: the climate affects human activities. affects human activities.

Climate Zones Around the Climate Zones Around the WorldWorld

Create Climagraph on Create Climagraph on Clarksville & answer Clarksville & answer questionsquestions

Monsoon- Frog & MouseMonsoon- Frog & Mouse

Review for QuizReview for Quiz

Monsoon DefinitionMonsoon Definition

Monsoon- a seasonal wind that hits Monsoon- a seasonal wind that hits South Asia twice a yearSouth Asia twice a year

Summer Monsoon = wet air, heavy Summer Monsoon = wet air, heavy rainsrains

Winter Monsoon = dry air, droughtWinter Monsoon = dry air, drought

Orographic EffectOrographic Effect

Rain Shadow- droughts

Take quiz over informationTake quiz over information # 2 is B# 2 is B

Edmodo- assignmentEdmodo- assignment