Question

HELP PLEASEEE , WILL MEDAL

How have scientists determined the earth's core is composed of iron and nickel?



A. Scientists have determined the compositions of earth's core by using current technology to reach earth's core, at depths of 1,802 miles, and examining extracted samples.


B. Scientists have determined the composition of earth's core by using radiometric dating to examine meteorites.


C. Scientists have taken samples from the oceanic crust to discover the composition of earth's core.

Answer 1

@JackofallTradez

Answer 2

Do you have any ideas?

Answer 3

was thinking a

Answer 4

Nope
With current technology, we can only reach about 3 miles into the Earth

Answer 5

b ? maybe

Answer 6

Actually, by studying the composition of meteorites, they concluded that the Earth's core is made of dense iron and nickel

Answer 7

So, B would indeed be correct ^_^

Answer 8

None of these answers are actually correct. We can know the composition from the core of the earth a few ways.

1. by using seismological and magnetic field data as well as other theoretical calculations, it's possible to get a sense of the actual size and composition of our planet's nether regions. Because there's no way to get a sample of the Earth's core, Miaki Ishii, a professor in Harvard University's seismology group, says, "We basically use methods that are similar to medical imaging."

researchers use waves emitted by earthquakes to get a sense of the planet's innards. Just like an X-ray, seismic waves bounce around, changing direction and speed based on the material they pass through. If researchers can gauge how quickly a wave moves from one tracking station to another, they can get a pretty good sense of what the ground that wave is traveling through looks like.