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Sabrina from United Kingdom wrote:What is the magnetic field of the Earth?
GLOBIO Traveling Teacher says:
Hi Sabrina.
The Earth's magnetic field helps to shield or protect us from charged particles traveling through space - mostly from our Sun. The Sun throws off powerful solar winds and solar storms. Most of these deflect off our magnetic field, but a few particles get trapped in what is called the "Van Allen Belts" in the area around Earth called the Magnetosphere. We can see these charged particles sometimes in the night sky as the Northern Lights or Southern Lights (or called the Aurora borealis (north) and Aurora australis (south)).
Exactly how or what forms the Earth's magnetic field is still being studied by scientists. They think it is probably from a combination the Earth's spinning outer core of molten metal, mostly nickel and iron, and possibly the heat the Earth is generating.
Thanks for the great question,
GLOBIO Traveling Teacher
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Zeenat from the United States wrote:What do plants produce which is so important to the composition of the atmosphere?
GLOBIO Traveling Teacher says:
Hi Zeenat,
Plants produce two very important gases that compose the atmosphere - oxygen (during the daylight) and carbon dioxide (at night). The oxygen plants produce is very important and insures life on Earth can exist. That's why plants are often times called the "lungs of the Earth".
You can learn more about plants in Glossopedia by clicking on the picture below.
Thanks for the great question,
GLOBIO Traveling Teacher
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Salman from Saudi Arabia wrote:What role do Rainforests play in maintaing the Earth's weather?
GLOBIO Traveling Teacher says:
Hi Salman,
Wow, that's a good question - rainforests are critical at helping maintain the Earth's weather, especially clean air and rainfall. The information is best found in our Glossopedia article on Tropical Rainforests. You can find it by clicking on the picture below. After looking at the article if you have a question not answered there please write us back.
Thanks for the great question,
GLOBIO Traveling Teacher
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Ariana P. from the United States wrote:
when was earth born
GLOBIO Traveling Teacher says:
Hi Ariana,
Scientists testing rocks believe that Earth, and the rest of the solar system, began to form about 4.5 billion years ago in a giant cloud of dust and gas. Over time, dust particles began to clump together. It probably took the clump that became Earth tens of millions of years to reach its current size. The young Earth had no water, no atmosphere, and no life-forms.
A little over 3.5 million years ago life started to appear on the new Earth.
You can read more about the Earth on Glossopedia:
http://www.globio.org/glossopedia/article.aspx?art_id=55&art_nm=Earth
Thanks for the great question,
GLOBIO Traveling Teacher
To learn more click here:
