HOTTER THAN EVER

GREEN HOUSE EFFECT

GROUP MEMBER

Scientific Explanation

Greenhouse effects

• 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 up.

• 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 sun.

• 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.

ENGAGE~ Ice Melting ~

• Distinguish the differences between those Distinguish 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 .

EMPOWER Materials:

1 Jar or other see-through containerData logger with heat sensorSunlamp or access to a sunny

area to perform the experiment

Instructions • 1) Place the both heat sensor in the sunlight for a few minutes to let them

get warm. • 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.

Time (second) Inside the beaker Outside the beaker

0 45.477 41.826

50 45.579 41.826

100 45.579 41.927

150 45.579 41.927

200 45.68 41.927

250 45.68 41.927

300 45.68 42.13

350 45.68 42.13

400 45.68 42.13

450 45.68 42.13

500 45.781 42.231

550 45.68 42.231

600 45.781 42.231

650 45.781 42.333

700 45.781 42.333

750 45.883 42.333

800 45.883 42.333

850 45.883 42.333

900 45.883 42.434

950 45.883 42.333

1000 45.883 42.333

1050 45.883 42.434

1100 45.883 42.434

1150 45.984 42.434

1200 45.984 42.434

1250 45.984 42.434

1300 45.984 42.434

1350 45.984 42.434

1400 45.984 42.434

1450 45.984 42.434

1500 45.984 42.434

1550 45.984 42.434

1600 45.984 42.434

1650 45.984 42.536

1700 45.984 42.536

1750 45.984 42.434

1800 45.984 42.434

1850 45.984 42.333

1900 45.984 42.231

1950 45.984 42.130

2000 45.984 42.029

RESULT

RESULT T

empe

ratu

re (

0C)

Time (s)

DISCUSSION

• 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?

ENHANCE

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.

Explanation• 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 melting.

•Video on Extreme Cold Temperature that kill 6 million fishes, 1000 of alligators and dolphins.

Unique features1) 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 same time.

THANK YOU!!!!