14.6 Global warming

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BiologieMiddelbare schoolvwoLeerjaar 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