Post on 26-Dec-2015
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 gaswhich absorbs ultraviolet (UV)
from the sun.
Name the three primary gaseswhich absorb infrared (IR) energy
Why is the ozonelayer important?
It protects the Earth from UV which damages crops andcauses cancer in humans.
Why is it warmer on acloudy 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?
Earth’s climate is constantly changing.
Climate Change
Antarctic Temperatures for Past 420,000 Years
Thousands of years ago
Te
mp
era
ture
dif
fere
nc
e (
°C)
co
mp
are
d t
o p
res
en
t
Read passage from pgs 600-601 and Think-pair-share what you discovered
Earth’s climate is constantly changing.
Climate Change
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.
Natural Processes That Change Climates
Climate Changes
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.
Natural Processes That Change Climates
Climate Changes
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.
Volcanic eruptionOcean circulation patternsSolar activityEarth Motions
Describe four natural processes that can cause climate change?
DAY 4
GREENHOUSE
Explain the greenhouse effect. Include a diagram which shows the
change in wavelength.