Review homework on GIS Posters. In pairs can you think of 3 factors that will cause the climate to...
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Transcript of Review homework on GIS Posters. In pairs can you think of 3 factors that will cause the climate to...
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Review homework on GIS Posters.
In pairs can you think of 3 factors that will cause the climate to change?
Definition of Climate: the long term average of the weather, usually over 30
years, for a large region.
Local and Global Causes of Current Climate Change
To be able to understand causes of climate change.
LEARNING OBJECTIVE
1) To be able to describe climate change since the last Ice Age.
2) To understand External and Internal factors which affect climate.
3) To apply current causes of climate change with detail to local and global scales.
LEARNING OUTCOMES
To be able to describe climate change since the last Ice Age.
• Use the graph below to HOLT describe the changes. You must refer to axis data and the period names.
LEARNINGOUTCOME 1
To be able to describe climate change since the last Ice Age.
• Add these annotations to the correct sections of the graph on the next page. Indicate your HOLT sentences.
LEARNINGOUTCOME 1
Temperature has increased by 6oC since
the last Ice Age.
The temperature is predicted to increase more rapidly in the
future.
The Little Ice Age was where the
temperatures were below the long-term
average for 600 years.
This was a period of rapid rise (put the year data in the
sentence).
There have been several periods of
fluctuation.
Refer to some axis data in each sentence.
Temperature has increased by 6oC since
the last Ice Age.
This was a period of rapid rise (put the year data in the
sentence).
The Little Ice Age was where the
temperatures were below the long-term
average for 600 years.
There have been several periods of fluctuation.
The temperature is predicted to increase more rapidly in the
future.
What data could we add to each box?
To understand External and Internal factors which affect climate.
• Arrange then copy these definitions.
LEARNINGOUTCOME 2
EXTERNAL FACTOR
A CHANGE THE HAPPENS BECAUSE OF THINGS OUTSIDE THE
EARTH.
INTERNALFACTOR
A CHANGE THE HAPPENS INSIDE THE
EARTH’S ATMOSPHERE.
To understand External and Internal factors which affect climate.
• Watch the following clip and list any external and internal factors of climate change are shown.
LEARNINGOUTCOME 2
To understand External and Internal factors which affect climate.
Order one from each of the following – Factor + Detail + Diagram. Remember to also state if it is External or Internal.
LEARNINGOUTCOME 2
SURFACE REFLECTION
VOLCANIC ACTIVITY
ORBITAL GEOMETRY
CHANGE IN ATMOS. GAS
SOLAR OUTPUT
TECTONIC ACTIVITY
ORBITAL GEOMETRY
Large amounts of sulphur dioxide and ash reduce solar radiation reaching the
surface. E.g. 1815 Mt. Tambora.
The Earth’s tilt changes from 21.5 o (less extreme) to 24.5 o (even hotter summers, even colder winters) every
41000 years.Movement of the continents affects atmospheric and oceanic circulation.
Large amounts of sulphur dioxide and ash reduce solar radiation reaching the
surface. E.g. 1815 Mt Tambora.
More carbon dioxide increases the greenhouse effect which makes the
Earth 15oC. Otherwise we’d be -18oC.
Variation from circular (colder) to elliptical (warmer) every 95000 years.
More ice reflects more solar radiation so temperature drops leading to more
ice. Then vice versa.
See th
e te
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iag
ram
s on
the
board
an
d u
se th
e G
reen
hou
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ffect
Dia
gra
m o
n th
e n
ext slid
e.
To apply current causes of climate change with detail to local and global scales.
Read pages 15 and 16 and list the global causes and local causes with specific detail.
LEARNINGOUTCOME 3
Click the image to watch a clip about Global warming. We are mostly interested in the Greenhouse effect. Take some crucial notes.
PLENARY
• What do you understand from this mnemonic about climate change
factors?
C A TI
S S O X
• Now complete and mark the exam question