• Sunlight enters the Earth's atmosphere,
passing through the blanket of greenhouse
gases. As it reaches the Earth's surface, land,
water, and biosphere absorb the sunlight’s
energy. Once absorbed, this energy is sent
back into the atmosphere. Some of the
energy passes back into space, but much of it
remains trapped in the atmosphere by the
greenhouse gases, causing our world to heat
• The greenhouse effect is the rise in
temperature that the Earth experiences
because certain gases in the atmosphere
(water vapour, carbon dioxide, nitrous oxide,
and methane, for example) trap energy from
• The glass panels of the greenhouse let in light
but keep heat from escaping
• if the greenhouse effect becomes stronger, it
could make the Earth warmer than usual. Even
a little extra warming may cause problems for
humans, plants, and animals.
• Distinguish the differences between thoseDistinguish the differences between those
three pictures.three pictures.
• In your opinion, why ice melting occur?In your opinion, why ice melting occur?
Nowadays ice keep on melting at the Arctic
that caused the rising of sea level. These
three pictures show the effect of ice
melting throughout the year .
1 Jar or other see-through container
Data logger with heat sensor
Sunlamp or access to a sunny
area to perform the experiment
• 1) Place the both heat sensor in the sunlight for a few minutes to let them
• 2) Record the initial readings of the sensor in a table.
• 3) Place 1 of the sensor under the jar. The other sensor is put exposed
directly to the sunlight which act as control.
• 4) After 33 minutes, stop the data logger and get the results.
• 5) Tabulate the result in table and graph form.
• What can you see about the pattern of both graph ?
Interpret the data given.
• Compare the changes of temperature from the initial
reading to the last reading between both location.
• What can you conclude about the purpose of this
experiment? How they relate to each other?
• Do the environment affect the temperature?
Over 1 million fish and thousands of alligators, turtles, dolphins and
other river wildlife are floating dead in numerous Bolivian rivers in the
three eastern/southern departments of Santa Cruz, Beni and Tarija.
The extreme cold front that hit Bolivia in mid-July caused water
temperatures to dip below the minimum temperatures river life can
tolerate. As a consequence, rivers, lakes, lagoons and fisheries are
brimming with decomposing fish and other creatures.
• Most scientists believe greenhouse gases,
including carbon dioxide that is released
mainly from vehicles and utility smokestacks,
cause global warming by trapping solar heat in
the atmosphere. Many believe global warming
can lead to catastrophic consequences,
including raising sea levels and strengthening
weather events such as hurricanes.
• One Arctic variation, known as Arctic Oscillation, an
atmospheric circulation pattern that can push sea ice out of
the area, had become less of an influence in the region since
the mid-1990s, the report said.
• Inuit hunters, threatened by the melting of Arctic ice, plan to
file a petition in December accusing the United States of
violating their human rights by fuelling global warming. The
Bush Administration has opted out of the Kyoto Protocol to
reduce greenhouse-gas emissions.
• The Inuit number about 155,000 in Canada, Alaska,
Greenland and Russia.
• Scientists say the Arctic is warming faster than the rest of
the globe because water or bare earth, once uncovered,
soaks up more heat than ice and snow. That process means
melting can spur even warmer temperatures and more
1) Data logger can immediately interpret data
during the experiment. It is a real time
operation. Student can immediately see the
changes occur during the time.
2) Student can manage to see the small changes
of temperature up to 0.01 degree celcius. On
the same time student would be able to
record the results in every 50 second. So, it is
more accurate than using thermometer.
3) This experiment require two temperature
sensor that link directly to the same data
logger. We can see the differences of
temperature in two different location at the