Regents Earth Science
John Dewey High School
Mr. Klimetz
Our Solar System: Dimensions, Motions and Densities
Reading the Earth Science Reference Tables VIII
Answer the following questions based on your interpretation of the Solar System Data chart of the
Earth Science Reference Tables (page 15) as well as your class notes.


1.    Which of the following planet possesses the greatest density?
a.  Earth   b.  Mercury   c.  Venus   d.  Mars

2.     Which is the approximate mean distance, in millions of kilometers, from the Sun to the least
dense planet of the solar system?
a.  2,869   b.  149.6   c.  1427   d.  5,900

3.     I am a planet with a period of revolution of 88 days, an orbital eccentricity of 0.206, and a
density of 5.4 grams per cubic centimeter. The name of my nearest neighbor is
a.  the Sun   b.  Venus   c.  Earth   d.  Saturn

4.     I am the planet which possesses the fastest rate of rotation. My name is
a.  Pluto   b.  Uranus   c.  Saturn   d.  Neptune

5.     I am the planet whose orbit is most nearly a perfect circle. My name is
a.  Neptune   b.  Uranus   c.  Earth   d.  Mercury

6.     The planet which possess the largest equatorial diameter in the entire solar system also
possesses
a.  the least density   b.  the smallest orbital eccentricity
c.  the shortest period of rotation   d.  the greatest period of revolution

7.     I am the planet which has the longest period of day and night. My name is
a.  Mercury   b.  Venus   c.  Earth   d.  Jupiter

8.     The apparent hourly angular motion of the Sun across Earth's sky is 15 degrees. What is
the apparent daily angular motion of the Sun across Mercury's sky?
a.  59 degrees   b.  4 degrees   c.  6 degrees   d.  88 degrees

9.     Which two planets possess the closest length of day?
a.  Uranus and Neptune   b.  Jupiter and Saturn   c.  Earth and Mars   d.  Mercury and Uranus

10.    Which planet takes the longest time to complete its orbital path around the Sun?
a.  Earth   b.  Venus   c.  Mars   d.  Neptune


Free-Response Question

Assuming that each planet in the solar system is perfectly spherical in shape, calculate the mass
of the planet Jupiter (in kilograms) given the following equations:

Volume of a Sphere = (4/3) x (pi) x (r x r x r) (where pi = 3.14 and r is the radius of the planet)
Density = Mass/Volume

Show all work.