Download sc.912.e.7.7 climatechange

SC.912.E.7.7
Identify, analyze, and relate the
internal (Earth system) and external
(astronomical) conditions that
contribute to global climate change.
Day 1
• What do the following terms mean?
– Climate Change
– Ozone
– Infrared energy
– Greenhouse Effect
Vocabulary
– Climate Change
• Long term weather patterns
– Ozone
• A gas found in the earths atmosphere (O3)
– Infrared energy
• Type of energy from the electromagnetic spectrum
– Greenhouse Effect
• The trapping of infrared energy in the earths
atmosphere
DAY 2
According to the graph below,
what wavelength
of energy does the Earth
receive in the greatest intensity?
Name the primary gas
which absorbs ultraviolet (UV)
from the sun.
Name the three primary gases
which absorb infrared (IR) energy
Why is the ozone
layer important?
It protects the Earth from UV
which damages crops and
causes cancer in humans.
Why is it warmer on a
cloudy night than
on a clear night?
Clouds (H2O vapor) absorb
IR energy radiated by the
Earth. On a clear night,
the IR energy escapes
back into space.
DAY 3
• Reading passage 600-601
Describe four natural processes
that can cause climate change?
Climate Change
Earth’s climate is constantly changing.
Temperature difference (°C)
compared to present
Antarctic Temperatures for Past 420,000 Years
Thousands of years ago
Read passage from pgs 600-601 and
Think-pair-share what you discovered
Climate Change
Earth’s climate is constantly changing.
Global climate changes can be caused by changes in
Earth’s energy budget and by the interactions among
Earth’s spheres.
Causes for climate change include variations
in Earth’s motions, the location of the
continents, variations in sunspots, and gases
and ash ejected into the atmosphere by
volcanoes.
Climate Changes
Natural Processes That Change Climates
 Volcanic Eruptions
• The presence of volcanic aerosols (ash, dust, and sulfur-based
aerosols) in the air increases the amount of solar radiation that is
reflected back into space. This causes Earth’s lower atmosphere
to cool.
 Ocean Circulation
• Changes in ocean circulation also can result in short-term climate
fluctuations.
Climate Changes
Natural Processes That Change Climates
 Solar Activity
• When the sun is most active, it contains dark blemishes called
sunspots. The formation of sunspots appears to correspond with
warm periods in Europe and North America.
 Earth Motions
• Geographic changes in Earth’s land and water bodies cause
changes in climate.
• Changes in the shape of Earth’s orbit and the tilt of Earth on its
axis are other Earth motions that affect global climates.
Describe four natural processes that
can cause climate change?
Volcanic eruption
Ocean circulation patterns
Solar activity
Earth Motions
DAY 4
GREENHOUSE
Explain the greenhouse effect.
Include a diagram which shows the
change in wavelength.