UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is too hot for humans to go there.
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It is too smelly for humans to go there.
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It doesn’t have Wi-Fi so none of their instruments work.
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Scientists have not figured out how to time travel.
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Detailed explanation-1: -Drill beneath the sediment on the sea floor and you hit the oceanic crust. One advantage of drilling into oceanic crust is it’s approximately 7 kilometers thick, while on land it is many times thicker, explained Koppers. That allows scientists to sample closer to the Earth’s mantle.
Detailed explanation-2: -So scientists rely on seismic waves-shock waves generated by earthquakes and explosions that travel through Earth and across its surface-to reveal the structure of the interior of the planet. Thousands of earthquakes occur every year, and each one provides a fleeting glimpse of the Earth’s interior.
Detailed explanation-3: -The temperature of the mantle varies greatly, from 1000°C (1832°F) near its boundary with the crust, to 3700°C (6692°F) near its boundary with the core. In the mantle, heat and pressure generally increase with depth. The geothermal gradient is a measurement of this increase.
Detailed explanation-4: -Although the mantle is largely hidden from our view, we do see it in places where cracks open up, allowing the molten rock to escape. These are volcanos, of course, and the liquid rock we see pouring out is the same as you’d find in the mantle.