Sheet # 47/Mountain Landscapes
Name: _____________________ Date_____________
Express all answers in scientific notations.
1) The total land area of the Earth's surface is about 148,300,000 km square. Write the area in scientific notation.
2) Mountain landscapes cover about one fifth of the Earth land surface. The total land area of the Earth's surface is about 148,300,000 km square. How much of the surface of the Earth has a mountain landscape?
3) In question 2, how much of the surface of the Earth does not have a mountain landscape?
4) The approximate mass of the Earth, in tons, is 6 followed by 21 zeros. Express the number in scientific notation.