Elements that affect Elements that affect weatherweather

- - cloudinesscloudiness - precipitation - precipitation-Recording weather -Recording weather

conditioncondition

Prepared by: Ms. Shirley Puaso-Valera

Grade 3 St. Fancis/St.Augustine/St.Maria GorettiSY 2013-2014

Key QuestionsKey Questions

A. How do factors affect the A. How do factors affect the

weather?weather?

B. Why do we need to know the weather for the day?

ObjectivesObjectives

A. Infer that weather changes from day A. Infer that weather changes from day to day.to day.

B. Identify the elements that affect the weather.

C. Record in a chart the weather for the day/ week using symbols.

D. Analyze how the different elements can affect the weather condition.

Look outside. Describe Look outside. Describe the weather for the the weather for the day through the day through the movements of the movements of the clouds.clouds.

CloudsClouds -Is a collection of droplets of water -Is a collection of droplets of water

floating in the air.floating in the air.

-Found in the lower part of the Found in the lower part of the atmosphere, atmosphere, tropospheretroposphere

CloudsClouds

-Some clouds are formed in the stratosphere ,too

-The shape and the position of the clouds tell the direction and speed of the wind in the sea.

CloudsClouds

- Tells how much water vapor is in the air

What are the kinds of clouds? What are the kinds of clouds?

How clouds help in telling the weather for the day?

Kinds of CloudsKinds of Clouds

•Stratus cloudsStratus clouds

- the indicate light rainy weather- the indicate light rainy weather

- can be seen early in the morning or - can be seen early in the morning or

late in afternoonlate in afternoon

Kinds of CloudsKinds of Clouds

•Cirrus cloudsCirrus clouds- are thin , curly , and feathery- are thin , curly , and feathery- they are formed high up in the - they are formed high up in the

sky where air is thin and wind sky where air is thin and wind does not blow too muchdoes not blow too much

Kinds of CloudsKinds of Clouds

•Cirrus cloudsCirrus clouds- the water vapor rises straight up - the water vapor rises straight up

high into the sky to form small lumps of high into the sky to form small lumps of clouds that look like feathersclouds that look like feathers

- they are formed when there is not - they are formed when there is not much moisture in air much moisture in air

Kinds of CloudsKinds of Clouds•Cumulus cloudsCumulus clouds

- are heaped and fluffy like cotton- are heaped and fluffy like cotton

- they are formed when the wind - they are formed when the wind

moves straight up in the skymoves straight up in the sky

Kinds of CloudsKinds of Clouds• Cumulus cloudsCumulus clouds

- generally indicate fair weather but - generally indicate fair weather but

when they become too big and grayish, when they become too big and grayish,

they may bring bad weather they may bring bad weather

characterized by lightning , thunder, characterized by lightning , thunder,

and strong rain.and strong rain.

Kinds of CloudsKinds of Clouds

•Stratus cloudsStratus clouds

- are spread out in the sky- are spread out in the sky

- they are formed when the wind moves - they are formed when the wind moves

horizontally, usually cover a large area, horizontally, usually cover a large area,

including the sun for many hoursincluding the sun for many hours

Kinds of CloudsKinds of Clouds

•Stratus cloudsStratus clouds

- the indicate light rainy weather- the indicate light rainy weather

- can be seen early in the morning or - can be seen early in the morning or

late in afternoonlate in afternoon

Kinds of CloudsKinds of Clouds

•Stratus cloudsStratus clouds

- it indicate light rainy weather- it indicate light rainy weather

- can be seen early in the morning or - can be seen early in the morning or

late in afternoonlate in afternoon

Kinds of CloudsKinds of Clouds•Nimbus clouds(Cumulonimbus)Nimbus clouds(Cumulonimbus)

- are rain clouds- are rain clouds

- appears grayish , bluish, or blackish- appears grayish , bluish, or blackish

Kinds of CloudsKinds of Clouds•Nimbus clouds(Cumulonimbus)Nimbus clouds(Cumulonimbus)

- composed of bigger droplets ready to - composed of bigger droplets ready to

fall as rainfall as rain

- seen during heavy rain or thunderstorm- seen during heavy rain or thunderstorm

Cloud in a jar activity:Cloud in a jar activity:

• ObserveObserve

• Discussion on the result of the Discussion on the result of the activityactivity

Video clip viewingVideo clip viewing

Water CycleWater Cycle

The water cycle affects The water cycle affects both climate and weatherboth climate and weather

• When clouds cover the entire sky , the When clouds cover the entire sky , the temperature directly below the clouds is lower. temperature directly below the clouds is lower. It is cooler because clouds reflect the heat of It is cooler because clouds reflect the heat of the sun in outer spacethe sun in outer space

•Clouds protect us from sun’s radiation by covering the space above us.

Precipitation

•Water that falls from the clouds

•Air temperature determines the form of precipitation that falls

•4 main types of Precipitation: Rain, Sleet, Snow and Hail

Types of Precipitation

RainRain SleetSleet

SnoSnoww

HailHail

Different kinds of Different kinds of precipitationprecipitation• Snow , sleet and hailSnow , sleet and hail

– They are solidThey are solid– Droplets of water in the clouds become Droplets of water in the clouds become

solid when the temperature of the air is solid when the temperature of the air is very low and water becomes frozenvery low and water becomes frozen

Different kinds of Different kinds of precipitationprecipitation

•Drizzle or showerDrizzle or shower

Different kinds of Different kinds of precipitationprecipitation

• Thunderstorm Thunderstorm

– – raindrops are big and they pour for raindrops are big and they pour for about an hourabout an hour

- usually accompanied by lightning - usually accompanied by lightning and thunderand thunder

Severe WeatherThunderstorms

Lightning

Tornadoes

More Severe Weather

Hurricanes Blizzards

• When rain fall heavily, the weather is When rain fall heavily, the weather is described as rainy.described as rainy.

In the Philippines, rainy weather In the Philippines, rainy weather is is accompaniedaccompanied by thunder and by thunder and lightning.lightning.

•In Metro manila and other areas , In Metro manila and other areas , heavy rains are usually followed by heavy rains are usually followed by floods.floods.

Instruments used to Instruments used to measure weather conditionmeasure weather condition

• Rain gaugeRain gauge

- a collection of pail with a ruler to - a collection of pail with a ruler to measure the depth of rain water.measure the depth of rain water.

Instruments used to Instruments used to measure weather conditionmeasure weather condition

• A psychrometer is used to measure A psychrometer is used to measure humidity. It has two bulbs in order to humidity. It has two bulbs in order to function properly. The two bulbs are function properly. The two bulbs are wet and dry. The temperature wet and dry. The temperature difference between the two is noted.difference between the two is noted.

• An Anemometer is an instrument An Anemometer is an instrument which is used to measure the speed which is used to measure the speed or force of wind and is mostly found or force of wind and is mostly found in weather stations. This term was in weather stations. This term was derived from a Greek word known as derived from a Greek word known as 'enomos' which means 'wind'.'enomos' which means 'wind'.

• Years ago farmers would use the wind Years ago farmers would use the wind vane to keep an eye on the winds vane to keep an eye on the winds direction. If the wind was blowing strong direction. If the wind was blowing strong from a certain direction it would mean from a certain direction it would mean rain was on it's way. rain was on it's way. 

At small public airports they have a wind At small public airports they have a wind sock flying so a pilot can tell how the wind sock flying so a pilot can tell how the wind is blowing to prepare for a landing/takeoff.is blowing to prepare for a landing/takeoff.

PAGASAPAGASA

• (Philippine Atmospheric , Geophysical, and (Philippine Atmospheric , Geophysical, and Astronomical Service AdministrationAstronomical Service Administration

• observes weather conditions, issued observes weather conditions, issued warning signals and storms warning signals and storms

PAGASAPAGASA

• Philippines is always visited by Philippines is always visited by tropical cyclones because it is in the tropical cyclones because it is in the typhoon belt.typhoon belt.

• Tropical cyclones are weather Tropical cyclones are weather disturbances when it grows, it disturbances when it grows, it develops into a typhoon or bagyo.develops into a typhoon or bagyo.

Weather forecast Weather forecast

Weather ForecastWeather Forecast

Weather ForecastWeather Forecast

GeneralizationGeneralization

• Different factors affect and Different factors affect and determine weather conditions.determine weather conditions.

• Weather condition changes from Weather condition changes from time to time , thus everybody should time to time , thus everybody should always be ready.always be ready.

ValuingValuing

•Always be ready to Always be ready to protect ourselves protect ourselves from the different from the different weather weather conditionsconditions..

EvaluationEvaluationAnswer page 325Answer page 325

A.A.Fill in the blanks with the correct Fill in the blanks with the correct words to complete the words to complete the sentences.sentences.

B.B.Match the weather instruments Match the weather instruments to its use.to its use.

Can you identify these Can you identify these clouds?clouds?

Other Cloud TypesOther Cloud Types

Cirrocumulus Cirrostratus

Stratocumulus Cumulonimbus

More Cloud TypesMore Cloud Types

Altocumulus

Altostratus

Nimbostratus

• Earth’s tilt at an angle of Earth’s tilt at an angle of 23.523.5 degrees degrees to the plane of its orbit around the Sun.to the plane of its orbit around the Sun.

• Major components of Earth that Major components of Earth that influence weather are: influence weather are: atmosphere, atmosphere, land forms, and water. land forms, and water.

• About About 70%70% of Earth’s surface is of Earth’s surface is covered by oceans.covered by oceans.

THANK YOU THANK YOU

FOR LISTENINGFOR LISTENING