Answer:
In fact, any relative motion between the two will cause a Doppler shift/ effect in the frequency observed. ... If stars and galaxies are travelling away from us, the apparent frequency of the light they emit decreases and their colour will move towards the red end of the spectrum.
Explanation:
Earth is a large spherical landmass, which is divided into three major layers, known as crust, mantle, and core. The innermost layer of the Earth is the core.
<h3>What is the core?</h3><h3 />
- The core of the Earth is the innermost layer, present beneath the mantle and crust.
- The core is entirely made up of iron and nickel. The core of the Earth is also called NIFE, which symbolizes the elements present in the core, Iron (Fe) and Nickel (Ni).
- Core has a radius of approximately 1220 kilometers and is responsible for the generation of the magnetic field.
- Core also consists of the earliest history of the planet and is extremely hot, such that the temperature is close to the Sun's temperature.
Thus, the correct answer is Option D.
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