Evidence that earth’s core has a high iron content comes from the study of

Evidence that Earth’s core has a high iron content comes from the study of "meteorites".

Meteorites refers to the pieces of different bodies in our solar system that make it to the ground when a meteor or "falling star" flashes through our climate at velocities of 15 to 70 kilometers for each second (approximately 32,000 to 150,000 miles for every hour). The larger part begin from space rocks broken by contacts with different space rocks. In a couple of cases they originate from the Moon and, apparently, comets and the planet Mars. Shooting stars that are found after a brilliant occasion has been seen are known as a "fall," while those found by chance are known as a "discover." Meteorites are normally named after a town or an expansive geographic milestone nearest to the fall or find, aggregately named regions. "Meteorite" can allude to an individual example, to those gathered inside a strewnfield, or to a particular territory.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave