Weight of earth = 5.9742 × 10^24 kilograms. It is composed mostly of Iron (32.1%), oxygen (30.1%), silicon (15.1%), magnesium(13.9%), sulfur (2.9%), nickel (1.8%), calcium (1.5%), and aluminium (1.4%); with the remaining 1.2% consisting of trace amounts of other elements.
0 comments:
Post a Comment