The outer core of the Earth is formed by liquid iron, with temperatures that can reach 3,000 ° C, its size is up to 5,150KM. It is in the outer core that the earth's magnetic field originates, generated from the movement of the liquids that make up the outer core. Seismic waves are the vibration movements that occur inside the earth and propagate on the earth like earthquakes or explosions, so through seismology it was important to determine the size of the nucleus, because from the study of seismic waves it is possible to determine direction, time and path of the waves, as well as those waves that are reflected and refracted. Therefore it was through the study of mechanical waves that one can discover important features of the structure of our planet.
True. The farther away you get from the equator the shorter the days.
Answer:
As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts. The outer shell of the star, which is still mostly hydrogen, starts to expand. As it expands, it cools and glows red. The star has now reached the red giant phase. It is red because it is cooler than it was in the main sequence star stage and it is a giant because the outer shell has expanded outward. In the core of the red giant, helium fuses into carbon. All stars evolve the same way up to the red giant phase. The amount of mass a star has determines which of the following life cycle paths it will take from there.
diagram of the life cycles of low and high-mass stars
The life cycle of a low mass star (left oval) and a high mass star (right oval).
the different evolutionary paths low-mass stars (like our Sun) and high-mass stars take after the red giant phase. For low-mass stars (left hand side), after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf.
Explanation:
The British Isles consists of the following islands:
Great Britain (England, Scotland and Wales)
Ireland (the Republic of Ireland) ...
The Orkney and Shetland Islands. ...
The Isle of Man. ...
Hebrides (including the Inner Hebrides, Outer Hebrides and Small Isles) All are islands off the northwest coast of Scotland.
The Isle of Wight.
