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viktelen [127]
3 years ago
9

What are ice cores from Greenland and Antarctica used for?

Geography
1 answer:
masha68 [24]3 years ago
8 0

Explanation:

Ice core is a sample of ice drilled from ice sheet of high mountain glacier, particularly in Greenland and Antarctica. The drill can be depth of 3.2km . The ice core can be used to know how the ice spreading during glacial and interglacial period. The ice core can tell us about past climatic information and also the possible track of future climatic change.

  • Ice is considered to be the best preserver of fossils . Many great mammals like mammoth, dinosaurs etc were identified and analysed from the remains which were found in antarctic region.

  • The ice also has bubbles of trapped gas that reveals the old volcanic eruptions and gives us an idea about the earth's early atmosphere.

  • Scientist spend many years exploring the ice caps of poles and other area and have succeeded in gathering a huge information about the above points.
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How does energy from the sun affect the motion of molecules in a solid compared to molecules in a gas?
astraxan [27]
<h2>Right answer: Molecules in a solid move slower than in a gas. </h2>

Matter is composed of molecules, which are always motion, however, the speed of this movement will depend on its state:

-If it is a solid, the movement of the molecules at room temperature is <u>very small</u>. This means, the atoms intertwine forming defined narrow crystal structures.

-In the case of liquids, molecules have more movement, however there is still some union between the atoms of the body, although much less intense than in the solids. This can happen if the temperature of a solid increases, it loses form until the crystalline structure disappears, reaching the liquid state.

-In the gases the movement of the molecules is <u>maximum</u>, it can be said that they are in chaos and show little response to gravity. They move so quickly that they are released from each other and are hugely separated from each other.

Now, the radiation coming from the Sun is transformed into kinetic energy causing the movement of the molecules, then this kinetic energy is transformed to thermal energy (heat). Hence, when there is an increase in temperature (due to the increase in kinetic energy) the speed of the vibration of the molecules increases.

However, these changes are not the same in all the states of matter. In the case of the solid state the molecules move slowly compared to the liquid and gaseous state.

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What do you believe were two important factors that encouraged people to settle and build a civilization in the place where you
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I think water and food is something that's encouraged people to settle where I live.
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Describe the importance of agriculture to the people of Central America. Why is the Green Bay society often bad for the country?
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Answer:Roman Agriculture describes the farming practices of ancient Rome, an era that lasted 1000 years. From humble beginnings, the Roman Republic (509 BCE to 27 BCE) and empire (27 BCE to 476 CE) expanded to rule much of Europe, northern Africa, and the Middle East and thus comprised a large number of agricultural environments of which the Mediterranean climate of dry, hot summers and cool, rainy winters was the most common. Within the Mediterranean area, a triad of crops was most important: grains, olives, and grapes.

The great majority of the people ruled by Rome were engaged in agriculture. From a beginning of small, largely self-sufficient landowners, rural society became dominated by latifundium, large estates owned by the wealthy and utilizing mostly slave labor. The growth in the urban population, especially of the city of Rome, required the development of commercial markets and long-distance trade in agricultural products, especially grain, to supply the people in the cities with food.

Contents

1 The "delightful" life

2 Crops

3 Farming practices

4 Trade

5 Economics

6 Mechanization

7 Acquiring a farm

8 Aristocracy and the land

9 Running a farm in Rome

10 Problems for farmers

11 Soil depletion

12 See also

13 References

14 Further reading

14.1 Modern sources

14.2 Primary sources

15 External links

Explanation:

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Explanation:

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