THE WEATHER

The weather

Winds in Catalonia

The winds differ according to the direction from which they blow. By convention you always take the direction of where they come from. In order to denominate a certain wind, either it is spoken of the concrete geographic sector from where it blows, or a proper name occurs him. In Catalonia there are many names to designate the winds, depending on both the geographical area and the specific meteorological situations.

5- Draw the " Rosa dels vents" and write the names of the winds in their corresponding places.

weather tools

Weather phenomena

weather activities

Wind and air pressure

Weather maps

YOUR WEATHER TOOL

you have to make your own weather tool

HERE CAN SEE SOME EXAMPLES

https://www.youtube.com/watch?v=NnU-RUQLjp0

https://www.youtube.com/watch?v=k4lQ9zvAE4U https://www.youtube.com/watch?v=LRwWcOVqflc

Ver

Record a video explaining the materials used,the construction process and how the device work.

types of weather maps

INTERPRETACIÓ D´ALGUNS MAPES

a) Si tenim un anticicló a l’oest de la Península i una borrasca cap a Escandinàvia, bufaran vents del nord-oest (mestral), que són freds i forts, netegen l’aire i no porten precipitacions

b) Quan l’anticicló se situa més al nord i les borrasques tendeixen a baixar de latitud, s'instaura el vent del nord (tramuntana) que és fort i fred, i no porta precipitacions

c) Quan l’anticicló se situa entre les illes Britàniques i les Açores, el vent agafa la direcció de nord-est (gregal). Com que passa per damunt del continent, arriba fred i pot originar nevades al Pirineu, precipitacions dèbils a les zones costaneres i fortes gelades. També és típic que aixequi la mar a la zona del golf de Lleó i a Menorca.

d) Si la Península es troba entre un l’anticicló amb forma més o menys el·líptica i una borrasca (al nord d’Àfrica), es donen les condicions per al vent de l’est (llevant). El llevant aixeca la mar i pot produir pluges dèbils, o bé temps inestable amb fortes pluges

e) Quan s'estableix una borrasca cap al sud de la Península i al nord d’Àfrica, bufa el vent del sud-est (xaloc). És un vent calent i fa pujar les temperatures. Pot produir pluges de fang en zones costaneres i de muntanya, ja que ve directament d’Àfrica i transporta molta pols.

f) Si una borrasca se situa a l’oest de la Península, propicia el vent del sud (migjorn). Aquest vent és càlid, fa pujar les temperatures i no porta plu-ges i, com que no és gaire fort, no aixeca gaire la mar.

Weather and pollution

Weather Folklore

Some activities

Your weather forecast

7- The quantity of water vapour in air is called HUMIDITY . Relative humidity refers to the amount of water vapour that air contains. Warmer air can hold more water vapour, but all air temperaures have a maximum amount of water vapour. For example : if one litre of air contains 40 g of water vapour and the maximun it can hold is 80 g, the relative humidity is 50 % What do you think will happen when the maximum amount of water vapour in air is exceeded?

6-What do you think has happened to these trees ?

a- A Fire b- A dry season c- Acid rain Explain what do you think could have happened.

Weather Folklore

If crows fly low, winds going to blow; If crows fly high, winds going to die.

Whether it’s cold or whether it’s hot; We shall have weather, whether or not!

No weather is ill, if the wind is still.

NEWS and weather; they travel together.

Rainbow in the east, sailors at peace. Rainbow in the west, sailors in distress.

Onionskin is very thin, mild winter is coming in. Onionskin is thick and tough winter will be cold and rough.

When a cow tries to scratch her ear it means a shower is very near.

Project : Your Weather Forecast

OBJECTIVE: In groups of four, the students interpret an isobar map and predict the weather PRESENTATION: The students make a presentation. They interpret an isobar map as well as a weather map and tell the weather forecast as if they were the weather person. The presentation includes: 1- A brief description of the isobar map pointing out the high and low pressure areas. 2-An Interpretation of an isobar map using a weather map. 3- A brief description of the weather map. That is, telling the weather forecast including a description of the precipitation (form of water) and types of clouds.

You have to record a video of your weather forecast and present it in the classroom of science .

https://www.meteo.cat

Servei meteorologic de Catalunya

1- What is weather?

2- What causes weather? Watch this video and answer the question

3- What is the significance of the Sun to the weather?

4-What is Climate Change?

5-What is Global Warming?

6-What is the Greenhouse Effect?.

7-what is acid rain?

1-For farmers, whose crops are their livelihood, the ability to predict the weather is crucial. Before the advent of modern weather forecasting technology, how do you think farmers predicted the weather?

2-Weather Proverbs: Read the following list of weather proverbs to students. In small groups or as a class, try to guess what each weather proverb means and what it might tell us about the weather. You have to present the activity on a small card

If crows fly low, winds are going to blow; If crows fly high, winds are going to die. No weather is ill if the wind is still. News and weather... they travel together. A sunshiny shower won't last half an hour. Clear moon, frost soon. From twelve 'til two tells what the day will do. It rains as long as it takes rain to come. When sea birds fly to land there truly is a storm at hand.

Year of snow, fruit will grow.

. 1-During the past 100 years, engineers and scientists have worked to design modern forecasting equipment such as weather balloons, satellites, Doppler radars and more to help predict the weather. Search on the internet information about these forecasting equipaments.

Tools Used to Measure the Weather

vane

Anemometer

Anemometers are devices used to measure winds.

measures wind direction

Barometer

is a weather instrument used to measure air pressure.

are tools used to measure ​ambient air temperature. The SI (international) unit of temperature is degrees Celsius, but in the U.S. we record temperatures in degrees Fahrenheit.

Thermometer

Hygrometer

is a tool that measures humidity, or moisture content in the air.

Rain Gauge

it measures

liquid precipitation.

weather phenomena

clouds

snow

rain

precipitation

wind

temperature

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How to interpret a weather map

Cold front

Warm front

Occluded front

Isobars

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2-Explain what happens in this picture

3-Define these concepts: precipitation, humidity, rain, snow, air,cloud, warm front , cold front, atmospheric pressure.

Types of rainfall.

1- Convectional rainfall

2- Orographic rainfall

1-Prevailing winds bring warm, moist air. 2- Air is forced to rise over high areas. 3- Air cools and condenses. 4-Clouds form and it rains. 5-Air descends on the other side of the mountains. 6-It warms up and therefore becomes drier.

3- Frontal rainfall

1-When a cold polar air mass meets a warm tropical air mass they do not mix – they form fronts. 2-The colder air mass is heavier than the warmer air mass, therefore the lighter, warmer air rises over the top of the heavier, colder air. 3- As the warm air is forced to rise it cools. Also, the warm air is in contact with the cold air along the fronts, and this also cools. 4-Condensation occurs and clouds form. 5-Rain occurs along the front

Atmospheric pressure

Atmospheric pressure is the pressure exerted by the Earth's atmosphere on the Earth due to the weight of air on the surface in contact with it. Atmospheric pressure affects all surfaces that are in contact with air, regardless of their position.

4- Explain what happens in this picture