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Ice cores contain gases representative of the atmosphere at the time the original snow fell, and thus are used for exploring ancient atmosphere properties. An upper age of about 800 000 years is the limit at present. The ice core also contains dust and radioactive fallout, and these contaminants serve as precise markers in the core. Very old ice does not preserve the annual climate bands that are such an aid to precise dating. CO2 is one of the embedded gases. [The ratio of the various isotopes of oxygen are a proxy for the temperature of the Earth, for the atmospheric mixing is reasonably quick.]
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How is the existence of earths unique atmosphere explained?
Earth's unique atmosphere is explained by a combination of factors including its distance from the sun, the presence of liquid water, and the effects of gravity on retaining gases. The atmosphere is primarily made up of nitrogen and oxygen, and it has the right composition for supporting life as we know it. The presence of life on Earth also plays a role in shaping and maintaining the composition of the atmosphere.
What do scientists study to learn about the temperature inside the earths crust?
Scientists study seismic waves to learn about the temperature inside the Earth's crust. By analyzing the speed and direction of these waves as they travel through different layers of the Earth, scientists can infer information about the temperature and composition of the Earth's crust.
What would happen to earths atmosphere without the greenhouse effect?
Without the greenhouse effect, Earth's atmosphere would be much colder, making the planet uninhabitable for most forms of life. The greenhouse effect helps trap heat from the sun, maintaining a stable temperature range that supports life as we know it.
How did the formation of coal decrease the amount of carbon dioxide in the earths early atmosphere?
The formation of coal removed carbon dioxide from the Earth's early atmosphere through the process of photosynthesis. Plants absorbed carbon dioxide from the atmosphere and stored it in their tissues. When these plants died and were buried, the carbon they had absorbed remained trapped in the coal deposits, thus reducing the amount of carbon dioxide in the atmosphere.
Why is an atmosphere called earths security blanket?
The Earth's atmosphere acts like a security blanket by providing protection from harmful solar radiation, regulating temperature to keep conditions suitable for life, and trapping gases to maintain a stable climate. Without this protective layer, the Earth would be much colder and life as we know it would not be possible.
What is the number order of earths atmosphere?
DONT KNOW CAN YOU Answer it
What 5 questions do scientists have about the planet mars?
I don't know all 5, but here are some Has there ever been life on Mars If so, what happened to it's atmosphere If so how advanced If it did have an atmosphere, why is it ahead of the Earth in evolution or are we looking at Earths future
Why do space vehicles have heat shields for reentry into earths atmosphere?
i dont know
How do scientists know about the structure of the earth's interior?
Because of the study of seismic waves from earthquakes
How do scientists know that different kinds of plants and animals lived in earths parts?
they take plants and animals to the lab and experiment
What type of storm covers Pluto?
As far as scientists know, there are no storms on Pluto, as much of its atmosphere is frozen.
How do the astronauts reduce the space capsules speed for reentry into the Earths atmosphere?
Look on Wikipedia unless you know the answer.-Acaheny & Ausia
Where did the gases in the earths atmosphere come from?
Scientist theorize that bacteria with chlorophyll in them slowly but surely began to multiply. And as they did, they photosynthesized enough to create an entire atmosphere. (as you know oxygen is a byproduct of photosynthesis)
Makes up 21 percent of the atmosphere?
Oxygen makes up 21% of the Earths atmosphere.
Scientists have been able to find no atmosphere around this planet because it has little gravity and is closest to the sun. The planet described is -?
i dont know
How do scientists know that there is a greenhouse effect occurring on Venus?
They know it because the atmosphere on Venus is 93% carbon dioxide and the surface temperature is between 400 and 500 degrees C.
Does the earths atmosphere extend about 1 kilometer above its surface?
No, the Earth's atmosphere extends much higher than 1 kilometer above its surface. The exosphere, the outermost layer of the atmosphere, extends up to 10,000 kilometers above the Earth's surface.
