The lithosphere a combination of the crust and the uppermost brittle layer of the mantle is divided into tectonic plates, including the seven major tectonic plates.
Answer:
equivalence
Explanation:
Recall that this principle is the basis of Albert Einstein's theory of general relativity. According to the German researcher, gravity is not a force that acts independently on each object, but rather a deformation of the same temporal space tissue.
According to the test carried out now by the team of astronomers, these three dead stars in two of their forms, a pulsar or a white dwarf, are perfect candidates to confirm the theory.
The equivalence was already understood centuries ago by Galileo Galilei. In his famous test of the spheres in the Tower of Pisa he demonstrated the existence on Earth. Subsequently, astronaut David Scott did the same on the lunar surface in 1971.
Now, this team has demonstrated it by studying two of the densest objects in the universe. Until today, many believed that the high density of the pulsar made him exempt from complying with the equivalence principle. However, being subjected to the gravitational field of one of the white dwarfs, the closest and least massive, after six years of observations, they have been able to demonstrate that both bodies have the same acceleration. And, if there is a difference, it is less than three parts between one million. That is the conclusion reached by a new test that tested Einstein and corroborated his theories once again.
Answer:
Caspian Sea
Explanation:
The largest lake in the world, or often referred to as a landlocked sea, the Caspian Sea, is the body of water on which both Russia and Iran come out and have borders on it. Iran occupies the southern part of the Caspian Sea, while Russia occupies the northern half of its western part and the northwestern part. The other three countries that have their share in this lake are Kazakhstan, Turkmenistan, and Azerbaijan.
The Caspian Sea is actually a lake, as in order to be classified as a sea it has to be connected with the rest of the ocean and sea waters, and it is not, it is landlocked. It has saline water though, which is why it is referred to as a sea. The saline water in it is there because this lake is a remnant of a once very large ocean, Tethys, that was stretching all the way from Spain to Indonesia, and from the central part of the Indian Ocean to Central Asia. With the movement of the Indian plate toward southern Eurasia, and the African toward western Eurasia, this ocean was closed down. The collision of these plates with he Eurasian caused the formation of numerous mountain chains as well, so Tethys was totally destroyed, only leaving behind it remnants like the Caspian Sea deep inland.
