[Answer] The core of the Earth is mostly composed of _______.a.magnesium and siliconb.aluminum and siliconc.nickel and irond.aluminum and iron

Answer: c.nickel and iron
The core of the Earth is mostly composed of _______.a.magnesium and siliconb.aluminum and siliconc.nickel and irond.aluminum and iron
Earth s inner core is the innermost geologic layer of the planet Earth .It is primarily a solid ball with a radius of about 1 220 km (760 mi) which is about 20% of Earth s radius or 70% of the Moon’s radius.. There are no samples of Earth s core accessible for direct measurement as there are for Earth s mantle.Information about Earth s core mostly …
Abundance of the chemical elements – Wikipedia
Abundance of elements in Earth’s crust – Wikipedia
Earth’s inner core – Wikipedia
Ultramafic rock – Wikipedia
Fri Apr 13 2007 14:30:00 GMT-0400 (Eastern Daylight Time) · The abundance of elements in Earth s crust is shown in tabulated form with the estimated crustal abundance for each chemical element shown as mg/kg or parts per million (ppm) by mass (10 000 ppm = 1%).. Estimates of elemental abundance are difficult because (a) the composition of the upper and lower crust are quite different and (b) the composition of the continental crust can vary …
The elements – that is ordinary matter made of protons neutrons and electrons are only a small part of the content of the Universe.Cosmological observations suggest that only 4.6% of the universe’s energy (including the mass contributed by energy E = mc² ↔ m = E / c²) comprises the visible baryonic matter that constitutes stars planets and living beings.
Sat May 15 2004 14:30:00 GMT-0400 (Eastern Daylight Time) · Peridotite is a dense coarse-grained igneous rock consisting mostly of the silicate minerals olivine and pyroxene.Peridotite is ultramafic as the rock contains less than 45% silica.It is high in magnesium (Mg 2+) reflecting the high proportions of magnesium-rich olivine with appreciable iron .Peridotite is derived from Earth s mantle either as solid blocks and fragments or as crystals …
Ultramafic rocks (also referred to as ultrabasic rocks although the terms are not wholly equivalent) are igneous and meta-igneous rocks with …

Leave a Reply