Question

Investigating Solar System The table shows the average distance from each planet in our solar system to the sun.

Celestial Body	Distance $\left(km\right)$	Distance $\left(km\right)$ Standard Notation
Earth	$149,600,000$	$1.496\times {10}^5$
Jupiter	$778,300,000$
Mars	$227,900,000$
Mercury	$57,900,000$
Neptune	$4,497,000,000$
Pluto	$5,900,000,000$
Saturn	$1,427,000,000$
Uranus	$2,870,000,000$
Venus	$108,200,000$

Order the planets from closest to the sun to farthest from the sun.

Answer 1

In standard form of a number we put decimal after first digit and remaining power is written as power of $10$

So,

Using law of exponents $a^m\times a^n=a^{m+n}$

Scientific notation of distance from Sun to

Earth $=149600000=1496\times {10}^5=1.496\times {10}^8$ km

Jupiter $=778300000=7783\times {10}^5=7.783\times {10}^8$ km

Mars $=227900000=2279\times {10}^5=2.279\times {10}^8$km

Mercury $=57900000=579\times {10}^5=5.97\times {10}^7$ km

Neptune $=449700000=4497\times {10}^5=4.497\times {10}^9$ km

Pluto $=5900000000=59\times {10}^8=5.9\times {10}^9$ km

Saturn $=1427000000=1427\times {10}^6=1.427\times {10}^9$ km

Uranus $=2870000000=287\times {10}^7=2.87\times {10}^9$ km

Venus $=108200000=1082\times {10}^5=1.082\times {10}^8$ km

So, comparing distances in standard notation form, we get

Order of planet from closest to the Sun to Farthest from the sun is given by

$\text{Mercury < Venus < Earth < Mars < Jupiter < Saturn < Uranus < Neptune < Pluto}$