The volume of the Earth is about 0.0000007 times as great as the volume of the Sun. How could you write the Earth's volume in comparison to the Sun in scientific notation?

Answer 1

You want to move the decimal point to the right enough times so that you are left with an integer, 7.0

move it 7 times, there's 6 zeroes after the decimal point. move it 6 times gives 0.7, so move it one more time, 7 total times to get 7.0

then multiply it by 10^-7

the earth is 7.0 x 10^-7 times the size of the sun

10^-7 = 1/10^7 = 1/10000000 = 1 over 1 with 7 zeroes after it.

10^2 = 100

10^1 = 10

10^0 = 1

10^-1 = 0.1 = 1/10

10^-2 = 0.01= 1/100

10^-3 = 0.001 = 1/1000

10^-4 = 0.0001 = 1/10,000

10^-5 = 0.00001 = 1/100,000

10^-6 = 0,000001 = 1/1 million

10^-7 = 0.0000001 = 1/10 million =1/10,000,000