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marysya [2.9K]
3 years ago
15

What is a seismometer, how does it work, what does it do, what was the worlds 1st seismometer

Geography
1 answer:
shutvik [7]3 years ago
6 0
Seismometers are tools which measure motion in the ground including seismic waves generated by earthquakes, volcanoes, and other activities which might create seismic waves. Seismometers measure any movement of seismic activity in the earth and today this is done by electronic means whereby the machine measures any changes in seismic activity in the surrounding areas of the seismometer. The first seismometer is believed to have been invented by Zhang Heng of China's Han Dynasty in 132 AD. 
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Why are the earth’s polar regions cooler than the earth’s tropical (equatorial) regions?
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They receive less radiation from the sun, due to their orientation relative to incoming sunlight.

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Earth has multiple different climate zones, roughly arranged by latitude. The difference in climates comes because of multiple factors, but the most important one is the Sun and the sunlight of it. Because Earth has a rounded shape, different parts of it receive different amounts of sunlight.

If we compare the tropical and polar regions as two contrasting regions, we can see huge differences. The tropical regions are warm or hot all year round, while the polar regions are very cold throughout all of the year. The tropical regions though receive sunlight at a much more direct angle, thus the sunlight is much more concentrated and heats up the region. The polar regions receive sunlight at a very low angle, so they are dispersing over a very wide area so they can not warm up the region.

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Tropical regions are dominated by that because of their distance from the equator as the trade winds that blow across the earth from the equator impact the climate there. High pressure moves from equator and cools to create low pressure away about 15° away from equator. This means there will be more rain and humid climate

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What is the significance of the yellow and yangtze rivers in china?​
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