4ème - Global Warming

Global warming

Sommaire

What is climate change?

Weather is measured everyday because it can change minute to minute, day to day or season to season.It is what happens to the atmosphere over a short period of time. Scientists working on weather are called meteorologists

Climate is based on long term trends and is measured over years. It is what happens to the atmosphere in a specific place for over 30 years or more. Scientists working on climate are called climatologists

Climate vs weather

Watch the video!

A: Tropical → In this hot and humid zone, the average temperatures are greater than 18°C all year B: Dry → These climate zones are so dry because the temperature is very hot and it does not rain often. C: Temperate → In this zone, there are typically warm and humid summers with thunderstorms and cool winters. D. Continental → These regions have warm to cool summers and very cold winters. In the winter, this zone can experience snowstorms, strong winds, and very cold temperatures, sometimes falling below -30°C E: Polar →In the polar climate zones, it’s extremely cold. Even in summer, the temperatures here never go higher than 10°C.

Climate types are based on the local vegetation and temperature. The system divides the world into climate zones.

the greenhouse gases

intense droughts, water scarcity, severe fires, rising sea levels, flooding, melting polar ice, storms and declining biodiversity.

Humans and human activities like burning fossil fuels or deforestation that release greenhouse gases .

CONSEQUENCES →

CAUSES →

Start

Non noté!

Prends une feuille et ferme ton cahier. Vérifie si tu es capable de répondre aux questions suivantes dans le temps imparti.

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10:00

1. Give the definition of climate change. 2. What is the difference between climate and weather? 3. What is the climate in Russia? 4. What is the climate in Brazil? 5. How do you call the scientists who study climate? 6. What's the main cause of climate change? 7. Can you name one greenhouse gas and give an example? 8. Give at least 3 consequences of climate change.

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The greenhouse effect

to heat: chauffer to warm: réchauffer to cool: refroidir to trap: piéger, bloquer to surround: entourer to release: relâcher

Vocabulary

Watch the video and explain in your own words what the greenhouse effect is.

The greenhouse effect

It is called the greenhouse effect and it leads to global warming.

The greenhouse effect

But because of the greenhouse gases, some of the heat is trapped and it causes a rise of temperature

Normally, the heat coming from the planet goes straight through the atmosphere

Some other solar radiations bounce back into space and never touch the Earth.

Some solar radiations go through the atmosphere and hit the Earth

1. Find human activities in the text and highlight them. 2. How do these activities participate in climate change? Highlight the answers. 3. Focus on the numbers. What is there share?

Put the corresponding number in the correct box.

What is the narrator speaking of?

Who is the narrator?

Landscapes

Look at the picture and imagine the aftermath of human activities on the following landscapes. Glacier → Sea → The forest → Volcano → River →

To be interconnected: être liés

To depend on something/someone: dépendre de qqch/qq To pollute: polluer To evolve: évoluer To destroy: détruire

Vocabulary

Nature doesn't need people but people need nature. "Your future depends on me." "Your actions will detemine your fate."

Explain, in your own words, each statement.

→ I’ve been here for over four and a half billion years.

Dans le passé et encore aujourd'hui, Mère Nature a nourri des espèces plus grandes que nous.

→ I have fed species greater than you.

Il s’emploie pour faire le bilan d’une expérience ayant toujours des conséquences dans le présent, pour parler d’une action commencée dans le passé et qui se poursuit dans le présent ou pour parler du résultat présent d’une action accomplie.

Le present perfect

1) I __________ (never / see) such a beautiful sunset before. 2) She __________ (finish) her homework already. 3) We __________ (live) in this town since 2015. 4) They __________ (not / call) me yet. 5) He __________ (break) his leg! 6) You __________ (ever / try) sushi? 7) My parents __________ (be) to Italy three times. 8) The cat __________ (catch) a mouse! 9) I __________ (just / read) an amazing book. It __________ (not / rain) all week.