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Exponents and Powers — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSExponents and Powers5 Marks
Question
Investigating Solar System: The table shows the average distance from each planet in our solar system to the sun.
Planet
Distance from sun $(km)$
Distance from sun $(km)$ Standard Notation
Earth
$149,600,000$
$1.496 \times 10^8$
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
$108,200,000$
 
$a.$ Complete the table by expressing the distance from each planet to the Sun in scientific notation.
$b.$ Order the planets from closest to the sun to farthest from the sun.
✓

Answer

$a.$ Sceintific notation from Sun to:
$ \text { Earth }=149600000=1496 \times 10^5=1.496 \times 10^8 $
$ \text { Jupiter }=778300000=7783 \times 10^5=7.783 \times 10^8 $
$ \text { Mars }=227900000=2279 \times 10^5=2.297 \times 10^8 $
$ \text { Mercury }=57900000=579 \times 10^5=5.97 \times 10^7 $
$ \text { Neptune }=4497000000=4497 \times 10^6=4.497 \times 10^9 $
$ \text { Pluto }=5900000000=59 \times 10^8=5.9 \times 10^9 $
$ \text { Saturn }=1427000000=1427 \times 10^6=1.427 \times 10^9 $
$ \text { Uranus }=28700000000=287 \times 10^7=2.87 \times 10^9 $
$ \text { Venus }=108200000=1082 \times 10^5=1.082 \times 10^8 $
$b.$ Order of planet from closest to the Sun to farthest from the sun is given by:
Mercury $ < $ Venus $ < $ Earth $ < $ Mars $ < $ Jupiter $ < $ Saturn $ < $ Uranus $ < $ Naptune $ < $ Pluto

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