Exponents And Powers Worksheets - Class 8, National Council Of Educational Research And Training Page 18
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36M A T H E M A T I C S
129. Astronomy The table shows the mass of the planets, the sun and
the moon in our solar system.
Celestial
Mass (kg)
Mass (kg)
Body
Standard
Notation
30
Sun
1,990,000,000,000,000,000,000,000,000,000
1.99 × 10
Mercury
330,000,000,000,000,000,000,000
Venus
4,870,000,000,000,000,000,000,000
Earth
5,970,000,000,000,000,000,000,000
Mars
642,000,000,000,000,000,000,000,000,000
Jupiter
1,900,000,000,000,000,000,000,000,000
Saturn
568,000,000,000,000,000,000,000,000
Uranus
86,800,000,000,000,000,000,000,000
Neptune
102,000,000,000,000,000,000,000,000
Pluto
12,700,000,000,000,000,000,000
Moon
73,500,000,000,000,000,000,000
(a) Write the mass of each planet and the Moon in scientific notation.
(b) Order the planets and the moon by mass, from least to greatest.
(c) Which planet has about the same mass as earth?
130. Investigating Solar System The table shows the average distance
from each planet in our solar system to the sun.
Planet
Distance from Sun
Distance from Sun
(km)
(km) Standard
Notation
8
Earth
149,600,000
1.496 × 10
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.
131. This table shows the mass of one atom for five chemical elements.
Use it to answer the question given.
Element
Mass of atom (kg)
Titanium
7.95 × 10
–26
Lead
3.44 × 10
–25
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