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Science 3rd, UNIT 5

Jan, 2014

Science 3rd grade

UNIT 5

THE ATMOSPHERE AND THE WEATHER

By: J. Cesar Brazo Mur

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

The ATMOSPHERE is a layer of air that surrounds the Earth

WIND is air in motion

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

MAIN FUNCTIONS OF THE ATMOSPHERE It protects us from solar radiations and the cold from the space

Clouds and weather form in the Atmosphere

It regulates electrical and magnetic forces

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

LAYERS OF THE ATMOSPHERE

The Atmosphere is made up of 5 layers: - Exosphere - Thermosphere - Mesosphere - Stratosphere - Troposphere

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

Exosphere

UPPER LAYER ARTIFICIAL SATELLITES ASTRONAUTS

Thermosphere

Mesosphere ozone layer

Stratosphere Troposphere

AURORAS COLDEST LAYER METEORITES JET AEROPLANES LOWER LAYER WEATHER & PLANES

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

AURORAS are brilliant lights in the Earth's atmosphere caused by the electrons from the solar wind.

They occur at the North and South Poles

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

IMPORTANT DEFINITIONS! CLIMATE: The state of the atmosphere at a place during a long period of time (normally, years) WEATHER: The state of the atmosphere at a place at a moment (day, week...)

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

One example... The CLIMATE at the desert is normally hot and dry...

but today, the WEATHER is rainy

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

It can be: TEMPERATURE hot (high temp.) cold (low temp.) T H E

W E E L A E O M F T H E E N R T S

Amount of rainfall PRECIPITATION It can be in form of: rain (liquid water) snow (solid water: snowflakes) hail (solid water: ice)

HUMIDITY Amount of water vapour in the air

It can be: breeze (soft wind) WIND gale (strong wind) hurricane (very strong wind)

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

RAIN and SNOW come from clouds and at the end, they return to the clouds again. This is what we call...

2nd

1st

El Tomillar, J.C. Brazo

3rd

4th

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Science 3rd, UNIT 5

Jan, 2014

METEOROLOGY is the science that studies climate

METEOROLOGISTS are scientists that predict the weather by studying atmospheric factors meteorological devices

artificial satellites and digital instruments

they use

THERMOMETERS measure temperature

ANEMOMETERS measure the speed of the wind

PLUVIOMETERS measure the rainfall HYGROMETERS measure humidity

El Tomillar, J.C. Brazo

WEATHER VANES show the direction of the wind

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Science 3rd, UNIT 5

Jan, 2014

We all like sunny and warm weather. We can go out, play and travel... However, bad weather do not allows us to do many things and sometimes it can be dangerous.

SEVERE WEATHER is extremely bad weather

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

THUNDERSTORMS

SNOWSTORMS

Electric storm with

Storms with lots of snow

thunders and lightnings

instead of rain

(and frequently rain)

SEVERE FLOODS

WEATHER

DROUGHTS

Can be caused by:

It doesn't rain or

- Heavy rain

snow (or it does very

- Rivers rising

little) for a long time

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

THUNDERSTORMS

SNOWSTORMS

Electric storm with

Storms with lots of snow

thunders and lightnings

instead of rain

(and frequently rain)

SEVERE FLOODS

WEATHER

DROUGHTS

Can be caused by:

It doesn't rain or

- Heavy rain

snow (or it does very

- Rivers rising

little) for a long time

El Tomillar, J.C. Brazo

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Science 3rd, UNIT 5

Jan, 2014

What do meteorologists use to show the weather?

WEATHER MAPS that have some symbols like...

sunny

cloudy

rainy

heavy rain stormy snowy

WIND ARROWS indicate the direction and speed of the wind

El Tomillar, J.C. Brazo

foggy

SOFT WIND STRONG WIND

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Science 3rd, unit 5