WorksheetsOur Solar System 2
Total questions: 21
Worksheet time: 11mins
Name
Class
Date
1.
A "dirty snowball" best describes ....
a)
an asteroid
b)
a comet
c)
a dwarf planet
d)
a moon
2.
The object closest in description to a planetesimal is...
a)
a moon
b)
an asteroid
c)
a comet
d)
a dwarf planet
3.
The implication is that a planetesimal is typically...
a)
spherical
b)
gaseous
c)
planet size
d)
rocky, icy, or both
4.
All asteroids are located between Mars and Jupiter.
a)
True
b)
False
5.
The planet with the greatest average density is...
a)
Jupiter
b)
Venus
c)
Earth
d)
Mercury
6.
The planet with a length of day closest to Earth's day is...
a)
Uranus
b)
Mars
c)
Neptune
d)
Venus
7.
The planet (excluding Pluto) with the most elliptical orbit is...
a)
Mercury
b)
Mars
c)
Jupiter
d)
Saturn
8.
The planet (including Pluto) whose axis of rotation is most tilted is...
a)
Venus
b)
Uranus
c)
Neptune
d)
Pluto
9.
The fastest moving planet is...
a)
Mercury
b)
Earth
c)
Mars
d)
Venus
10.
The planet whose gravitational acceleration is closest in value to Earth's g is...
a)
Venus
b)
Saturn
c)
Uranus
d)
Neptune
11.
How many planets in our Solar System have been discovered with rings so far?
a)
one
b)
two
c)
three
d)
four
12.
Which planet (excluding Pluto) has its orbital plane tilted or inclined at the greatest angle?
a)
Mercury
b)
Venus
c)
Earth
d)
Saturn
13.
The planet with the hottest average surface temperature is...
a)
Mercury
b)
Venus
c)
Earth
d)
Mars
14.
Why are the four innermost planets the most dense?
a)
They are closer to the Sun.
b)
They are small in diameter
c)
They are rocky
d)
The revolve faster.
15.
The fastest rotating planets are...
a)
the rocky planets
b)
the gas giants
c)
the ice planets
d)
they all rotate at the same rate
16.
The best current estimate of the age of our Solar System is about...
a)
1 billion years old
b)
5 billion years old
c)
10 billion years old
d)
15 billion years old
17.
Pluto lies in a region of our Solar System known as...
a)
the Asteroid Belt
b)
the Kuiper Belt
c)
the Oort Cloud
d)
the Metroplex
18.
Earth's seasons are mainly the result of...
a)
its slightly elliptical orbit
b)
its changing speed around the Sun
c)
the tilt of its axis of rotation
d)
the Moon's influence
19.
The proper order of objects according to increasing size is...
a)
protoplanet, planetesimal, planet
b)
planet, protoplanet, planetesimal
c)
planetesimal, protoplanet, planet
20.
Moons are very similar to a planet except...
a)
they are always smaller than planets.
b)
they are natural satellites of a planet.
c)
they do not rotate.
d)
they have just one composition
21.
Most of the mass in our Solar System is located...
a)
within the gas giant planets
b)
within the Asteroid Belt
c)
within the Sun
d)
within the outer Solar System (Kuiper Belt and Oort Cloud)
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