The Earth Doesn't Melt Even though the Earth's Core Is Very Hot. Why?
The core of the earth has a boiling temperature. However, why doesn't the earth melt and burn because of the heat from the earth's core?
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Planet Earth is third in the Milky Way solar system. The Earth consists of several layers, including the Earth's inner core, the Earth, the outer core of the Earth, the Earth's mantle, and the last layer, namely the layer where we live, the skin or crust of the Earth.
We already know that the Earth's core layer is the hottest of the other layers under the part where we live. The heat from the sun's surface, known for its excellent heat, can still be beaten by the temperature of the Earth's core. Of course hard to believe, but that's the truth. So, why doesn't the Earth melt or burn from the heat of the deepest part of the Earth?
The distance between the Earth's core and the surface where we live is only about 3,000 km. Jon Butterworth, a professor of physics at University College London, explains that the Earth's core is surrounded by a mantle of rock primarily solid. However, the main reason the planet we live on does not melt due to the heat of the Earth's core is the difference between the heat energy and the temperature itself.
"Broadly speaking, heat is energy, while temperature is energy density. Basically how much energy is crammed into a certain size," said Jon Butterworth, collected from Science Focus.
He gave an example that sparks produced from fireworks can have temperatures of up to 1,500 degrees Celsius, and it doesn't make us feel so sick or hot when exposed. Meanwhile, if you shower using boiling water, even though it's only 100 degrees Celsius, the body will feel hot, and even the skin can peel off. This can happen because bathing has more heat energy.
To melt the entire Earth, it takes more energy than the heat that comes from the core of the Earth itself. Such a big sun could do that easily. Luckily, between the sun and the Earth is 150,000,000 km.
Then, what if the Earth's core is not hot but cold? Quoted from Science ABC on Thursday (13/10/2022), it turns out that if the Earth's core becomes cold, too dense, or liquid, there will be no way for life to survive and develop.
Image source: Image of Layer of earth | SlidePlayer - Toko Iman
