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14.6 Global warming
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Biologie
Middelbare school
vwo
Leerjaar 3
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Slide 1 - Diapositive
14.6 Global warming
Slide 2 - Diapositive
Learning objective
You will learn what the consequences of global warming are for sea levels, the weather, and for nature.
Schedule:
Welcome
Learning objective
Instruction
Assignments
End of class
Slide 3 - Diapositive
What was the average temperature in the Netherlands in 2017?
A
9°C
B
11°C
C
13°C
D
15°C
Slide 4 - Quiz
Does deforestation contribute to global warming?
A
No, trees aren't that important
B
Sometimes because only the cutting down of Maple trees contributes to global warming
C
No, deforestation adds methane to the atmosphere, which makes the Earth cooler
D
Yes; less trees means less CO2 is turned into oxygen.
Slide 5 - Quiz
Climates are changing ______ global warming.
A
in spite of
B
as a result of
C
as well as
Slide 6 - Quiz
Climate
= average weather conditions in a certain area over a longer period of time
Over the past century average temperature has risen by 0.9 degrees
Slide 7 - Diapositive
Causes for a rise in temperature
Natural fluctua
(ice ages and warmer periods of time)
Enhanced greenhouse effect
clear evidence: highest CO2 levels in 800.000 years
due to fossil fuels and deforestation
Woodland loss and woodland gain between 1990 and 2015
Slide 8 - Diapositive
Consequences: 1 Rising sea levels
Arctic ice cap and the Greenland and Antarctic ice sheets are melting.
Slide 9 - Diapositive
Consequences: 1 Rising sea levels
Glaciers are gradually retreating as well
Slide 10 - Diapositive
Consequences: 1 Rising sea levels
The sea level has already increased by 20cm
Problem for low-lying countries (especially in tropical areas)
Slide 11 - Diapositive
Consequences: 2 Shifting climate zones
Climate zone
= a large area with more or less the same climate
Desertification
= some areas are changing into deserts due to higher temperatures
Slide 12 - Diapositive
Consequences: 3 More frequent bouts of extreme weather
Floods
(caused by heavy rainfall, storms, or long-term droughts).
Higher temperature -> more water evaporation ->more rainfall
warm seawater -> increase in the number of storms and hurricanes.
Slide 13 - Diapositive
great tit eggs hatch in april, caterpillars in may
earlier hatching
Consequences: 4 Nature changes
Slide 14 - Diapositive
Consequences: 4 Nature changes
exotic
= organism that has settled in a country or area that was not its original habitat
oak processionary moth
filter fly
Slide 15 - Diapositive
What?
Make: 14.6 assignments 1-11
How?
Work in your book. You may consult in a whisper.
Help?
Ask your neighbour first. Then raise your hand to ask me.
Time?
10-15 minutes
Finished?
Check your answers. Study for the big test.
Slide 16 - Diapositive
Slide 17 - Diapositive
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