When Jules Verne wrote Journey to t

When Jules Verne wrote Journey to the Center of the Earth in 1864, there were many conflicting theories about the nature of the Earth' s interior. Some geologists thought that it contained a highly compressed ball of incandescent gas, while others suspected that it consisted of separate shells, each made of different materials. Today well over a century later, there is little direct evidence of what lies beneath our feet. Most of our knowledge of the Earth' s interior comes not from mines or boreholes, but from the study of seismic waves--powerful pulses of energy released by earthquakes.
The way that seismic waves travel shows that the Earth' s interior is far from uniform. The continents and the seabed are formed by the crust--a thin sphere of relatively light, solid rock. Beneath the crust lies the mantle, a different layer that extends approximately halfway to the Earth' s center. There the rock is the subject of a battle between increasing heat and growing pressure.
In its high levels, the mantle is relatively cool; at greater depths, high temperatures make the rock behave more like a liquid than a solid. Deeper still, the pressure is even more intense, preventing the rock from melting in spite of a higher temperature.
Beyond a depth of around 2,900 kilometers, a great change takes place and the mantle gives way to the core. Some seismic waves cannot pass through the core and others are bent by it. From this and other evidence, geologists conclude that the outer core is probably liquid, with a solid center. It is almost certainly made of iron, mixed with smaller amounts of other elements such as nickel.
The conditions in the Earth' s core make it a far more alien world than space. Its solid iron heart is subjected to unimaginable pressure and has a temperature of about 9,000°F. Although scientists can speculate about its nature, neither humans nor machines will ever be able to visit it.

Kết quả (Anh) 2:

When Jules Verne wrote Journey to the Center of the Earth in 1864, There were many xung đột Theories about the nature of the Earth's interior. Some geologists thought it contained a highly compressed có ball of incandescent gas, while others suspected it consisted of chia có shells, each made of khác materials. Today well over a century later, there is little direct what lies beneath our Evidence of feet. Most of our knowledge of the Earth's interior Comes from mines or boreholes not, but from the study of seismic waves - powerful pulses of energy released by Earthquakes.
The way seismic waves travel mà rằng shows Earth's interior is far from uniform. The continents and the seabed are formed by the crust - a thin sphere of Relatively light, solid rock. Beneath the crust lies the Mantle, a different layer extends khoảng có halfway to the Earth's center. There the rock is the subject of a battle the between tăng heat and Growing pressure.
In nó high levels, the Mantle is Relatively cool; at greater depths, high temperatures make the rock behave more like a liquid than a solid. Deeper still, the pressure is more intense even level, preventing the rock from melting in spite of a Higher temperature.
Beyond a depth of around 2,900 kilometers, a great change takes place and the Mantle Gives way to the core. Some seismic waves can not pass through the core and others are bent by it. Evidence from this and other, geologists conclude có là outer core is liquid, with a solid center. It is almost certainly made of iron, mixed with other smaller elements như tiền of nickel.
The conditionsEND_SPAN in the Earth 's core make it a far more coal space alien world. Its heart is subjected to solid iron unimaginable pressure and has a temperature of about 9,000 ° F. Although scientists of ITS can speculate about nature, nor machines liên Humans thể sẽ Ever visit it.