Tuesday, January 19, 2010
Monday, January 18, 2010
Global Warming Part 1
Welcome to the first part of global warming! In this group, I, Chew Zheng Xiong has been doing all the work. Despite having internet at home the others just slack...but never mind I must get the marks myself.
Firstly, What is Global warming and how did it started?
Global Warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation. Global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) between the start and the end of the 20th century. The Intergovernmental Panel on Climate Change (IPCC) concludes that most of the observed temperature increase since the middle of the 20th century was caused by increasing concentrations of greenhouse gases resulting from human activity such as fossil fuel burning and deforestation.
What are the possible effects on the Earth?
Firstly, What is Global warming and how did it started?
Global Warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation. Global surface temperature increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) between the start and the end of the 20th century. The Intergovernmental Panel on Climate Change (IPCC) concludes that most of the observed temperature increase since the middle of the 20th century was caused by increasing concentrations of greenhouse gases resulting from human activity such as fossil fuel burning and deforestation.
What are the possible effects on the Earth?
An increase in global temperature will cause sea levels to rise and will change the amount and pattern of precipitation, probably including expansion of subtropical deserts.Warming will be strongest in the Arctic and will be associated with continuing retreat of glaciers, permafrost and sea ice. Other likely effects include increases in the intensity of extreme weather events, species extinctions, and changes in agricultural yields.
Political and public debate continues regarding global warming, and what actions (if any) to take in response. The available options are mitigation to reduce further emissions; adaptation to reduce the damage caused by warming; and, more speculatively, geoengineering to reverse global warming. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions.
As there is still many things to write on Global Warming so I will stop part 1 here...
Sunday, January 17, 2010
Global Cooling Part 1
Hi to everyone and welcome to the part 1 of global cooling and there will be also parts on global warming here to come.
Firstly, The Earth had been hit with global cooling a while back and I mean a few thousand years ago where as you know was the Ice Age. If you have seen the movie Ice Age you think is funny and nice but actually is not.
The Ice Age denotes a geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in an expansion of continental ice sheets, polar ice sheets and alpine glaciers. An ice age is a natural system. Within a long-term ice age, individual pulses of extra cold climate are termed "glacial periods" (or alternatively "glacials" or "glaciations"), and intermittent warm periods are called "interglacials". Glaciologically, ice age implies the presence of extensive ice sheets in the northern and southern hemispheres; by this definition we are still in the ice age that began at the start of the Pleistocene (because the Greenland and Antarctic ice sheets still exist).
The Earth's orbit as everyone thought is always round, which scientists had proven that we are WRONG. The earth orbit according to scientist has been transforming from almost round to oval shape. So, when the Earth's orbit is almost oval, we experience very cold and hot temperatures.But for the last ten thousand years, we have been experiencing very good temperatures for use to live in which scientist say that it is not very good. If we do not experience the temperature change throughout the years, it means that if the Earth's orbit has become oval there will be a second Ice Age. Crops will fail, people and animals will die due to the extreme cold temperatures. How did the scientists find out? They dug out ice cores from the Greenland, the arctic, antarctica and places that snow throughout the years. But this is not only the reason that suggest that global cooling is coming. I will explain the other factors in the next part...
Firstly, The Earth had been hit with global cooling a while back and I mean a few thousand years ago where as you know was the Ice Age. If you have seen the movie Ice Age you think is funny and nice but actually is not.
The Ice Age denotes a geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in an expansion of continental ice sheets, polar ice sheets and alpine glaciers. An ice age is a natural system. Within a long-term ice age, individual pulses of extra cold climate are termed "glacial periods" (or alternatively "glacials" or "glaciations"), and intermittent warm periods are called "interglacials". Glaciologically, ice age implies the presence of extensive ice sheets in the northern and southern hemispheres; by this definition we are still in the ice age that began at the start of the Pleistocene (because the Greenland and Antarctic ice sheets still exist).
The Earth's orbit as everyone thought is always round, which scientists had proven that we are WRONG. The earth orbit according to scientist has been transforming from almost round to oval shape. So, when the Earth's orbit is almost oval, we experience very cold and hot temperatures.But for the last ten thousand years, we have been experiencing very good temperatures for use to live in which scientist say that it is not very good. If we do not experience the temperature change throughout the years, it means that if the Earth's orbit has become oval there will be a second Ice Age. Crops will fail, people and animals will die due to the extreme cold temperatures. How did the scientists find out? They dug out ice cores from the Greenland, the arctic, antarctica and places that snow throughout the years. But this is not only the reason that suggest that global cooling is coming. I will explain the other factors in the next part...
GRACE WS2
What is our topic?
Global warming and cooling
What do I know about this topic?
Global warming and global cooling is
affecting each other.
What subject skills can I make of?
Research and Analysis
Team Work
ICT skills
Where can I find information for our project?
Google, Yahoo and other Internet search engines
What do I want to tell others of my project?
The Earth is dying we must stop doomsday from arriving!
Global warming and cooling
What do I know about this topic?
Global warming and global cooling is
affecting each other.
What subject skills can I make of?
Research and Analysis
Team Work
ICT skills
Where can I find information for our project?
Google, Yahoo and other Internet search engines
What do I want to tell others of my project?
The Earth is dying we must stop doomsday from arriving!
Week 1 reflection Member: Anton Chan
We did not do a lot of work for the first week. We only created a blog and finished our first assignment. We will continue to do our best for the next few weeks.
Week 1 reflection Member:Chew Zheng Xiong
We will be doing our GRACE WS 2 today and we will decide a topic by today also
I already have an idea for the project if no one objects then we will go on with it.
I already have an idea for the project if no one objects then we will go on with it.
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