What are the major elements found on earth?

Context: Earth's mass is approximately 5.97×1024 kg. It is composed mostly of iron, oxygen, silicon, magnesium, sulfur, nickel, calcium, and aluminum, with the remaining 1.2% consisting of trace amounts of other elements. Due to gravitational separation, the core is primarily composed of the denser elements: iron, with smaller amounts of nickel, sulfur, and less than 1% trace elements. The most common rock constituents of the crust are oxides. Over 99% of the crust is composed of various oxides

Answer: Earth's mass is made of primarily iron, oxygen, silicon, magnesium, sulfur, nickel, calcium and aluminum.