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WorksheetsOur Solar System 1
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
Which planets can be classified as either gas giants or ice giants?
a)
Jupiter and Saturn
b)
Jupiter and Uranus
c)
Neptune and Uranus
d)
Neptune and Saturn
2.
Accretion defines a planetary process by which ....
a)
protoplanets grow into planetesimals
b)
planetesimals grow into protoplanets
c)
planetesimals break apart
d)
planets are captured by a star
3.
Flattening of a nebular disk is the direct result of...
a)
cloud rotation
b)
cloud condensation
c)
cloud contraction
d)
cloud cooling
4.
A comprehensive hypothesis about the formation of a solar system needs to account for all these considerations except:
a)
the direction, shape, and plane of orbits
b)
the differentiation of the nebula into planets, star(s), and other bodies
c)
the number of orbiting objects
d)
the growth of smaller objects into larger objects.
5.
The two ice giants in our Solar System are mainly a consequence of ....
a)
early formation from the nebular disk.
b)
being large in size.
c)
being located beyond the Frost Line.
d)
being made of gas.
6.
Which International Astronomical Union (IAU) characteristic does Pluto fail to meet for a planet?
a)
It has mass enough to form a spherical body.
b)
It has cleared out its orbital path of other bodies.
c)
It orbits a star (our Sun).
d)
It has an elliptical orbit.
7.
The most likely place to find original solid samples in our Solar System are...
a)
in asteroids
b)
in gas giants
c)
in terrestrial planets
d)
in moons
8.
The least amount of thermal energy (heat) for the internal formation of planets comes from...
a)
gravitational compaction
b)
solar radiation (light)
c)
radioactive decay
d)
impacts during accretion
9.
One fact that the Solar Nebular hypothesis does not explain is...
a)
the existence of planets.
b)
that orbits of all planets are in the same direction.
c)
the existence of life in our Solar System.
d)
the existence of a star
10.
Compaction of the core of a gas cloud to form the Sun was primarily caused by...
a)
a shock wave
b)
gravity
c)
suction
d)
accretion
11.
A planet must ...
a)
be relatively large
b)
be solid throughout
c)
orbit a star
d)
have a moon
12.
A star "burns" by...
a)
combustion
b)
fusion
c)
oxidation
d)
fission
13.
Solar wind is composed of....
a)
energized particles emitted by the Sun.
b)
light radiation.
c)
rotating particles from the nebular disk.
d)
the wake of orbiting planets.
14.
The unifying force in the Solar System is ....
a)
accretion
b)
gravity
c)
condensation
d)
fragmentation
15.
Planetary orbits are ____________ in shape.
a)
parabolic
b)
elliptical
c)
linear
d)
rectangular
16.
One example of a rocky dwarf planet located within the orbit of Uranus is ...
a)
Pluto
b)
Eris
c)
Ceres
d)
Sedna
17.
The planet-like object most like Earth in physical size is...
a)
Mercury
b)
Venus
c)
Mars
d)
Ceres
18.
The closest planet to Earth is...
a)
Venus
b)
Mars
19.
In the formation of our Solar System, which process produces smaller chunks from larger chunks?
a)
condensation
b)
accretion
c)
fragmentation
d)
outgassing
20.
The example of Kepler-47 reaffirms that smaller rocky planets form closest to a star.
a)
True
b)
False
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