3.1 The Earth is warming up!

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ENERGY TRANSITION

I worry about climate change

😒🙁😐🙂😃

Unit 1 is about climate change. The Earth has warmed up 1 degree celcius on average over the last few decades

But  1 degree on average does not tell us much.

watch closely the video underneath:

Statement 1: Over land the warming is stronger than over the oceans
Statement 2: Near the poles the warming is stronger than closer to the equator

1. statement 1 is right, statement 2 is wrong
2. statement 1 is wrong, statement 2 is right
3. both statements are right
4. both statements are wrong

Sub question: 

Climate change, what are the causes?

First: The basics

* On Earth there is greenhouse effect. The atmosphere is made out of gasses. About  1% of these gasses are greenhouse gasses. These gasses absorb the warmth earth receives from the sun.

* Without the greenhouse effect the earth would have a different temperature

Which of these are greenhouse gasses?

1. CO2, methane, water vapour
2. CO2, water vapour, oxigen
3. CO2, oxigen, H2O
4. Methane, nitrogen, oxigen

The average temperare on earth is 15 degrees celcius. What would the average temperature on earth be without the greenhouse effect?

1. 11 degrees
2. 0 degrees
3. -7 degrees
4. -18 degrees

looking at these graphs we see that an increase in the amount of greenhouse gasses in the atmosphere since 1975. This is caused by industry, traffic and farming

right or wrong? Before the industrial revolution climate change never happened

1. right
2. wrong

For example te Ice Ages. When it got colder alle of sudden, without the influence of people!  And there's also been times that the climate of the world was much warmer, due to for example vulcanism!

Facts about climate change

* Due to an increase of greenhouse gasses the athmosphere warms causing extreme weather and rising sealevels . But why are scientists so sure about this fact? (explantion will follow...)

* Irriversable damage to the climate we call a  tipping point, dfortunately we have to not yet reached any of these tipping points and they can be prevented if we acht soon

* Without more sustainable action the earth could warm up more than 4.5  degrees  before 2100, compared to 1800! 

71% of all CO2 emissions are caused by

1. 10 companies
2. 100 companies
3. 1000 companies
4. 10000 compagnies

... % of the (wealthy) world population emits the same amount of CO2 as the poorest half of the world population

1. 1
2. 5
3. 10
4. 20

the wealthiest 20% of the world population is responsible for roughly ... of the total CO2 emision

1. 25 %
2. 45%
3. 65%
4. 85%

How do we know for sure the emission of greenhouse gasses is causing the current global warming?

Because there have been climate changes before ...

collega's, let op, bij deze sheet is het van belang dat je goed laat zien dat als je alleen de natuurlijke effecten in ogenschouw neemt de gemiddelde temperatuur op aarde gelijk zou zijn gebleven of misschien zelfs een beetje zou zijn gedaald (Groen+paars+geel) en dat alleen door het effect van rood de temperatuur dus stijgt.