The approximate total surface area of Earth is 5.1 x 108 km2.
All the salt water on Earth has an approximate surface
area of 352,000,000 km2.
All the freshwater on Earth has an approximate surface area of 9 x 106 km2 .
10
10
10
From EngageNY.org of the New York State Education Department. Grade 8 Mathematics Module 1, Topic B, Lesson 9. Internet. Available from https://www.engageny.org/resource/grade-8-mathemat...; accessed 03/Nov/2015.
Question 1
1.
How much of Earth’s surface is covered by water, including both salt and fresh
water? Write your answer in scientific notation.
Question 2
2.
How much of Earth’s surface is covered by land?Write your answer in scientific
notation.
Question 3
3.
Approximately how many times greater is the amount of Earth’s surface that is
covered by water compared to the amount of Earth’s surface that is covered by
land?