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WorksheetsSolar System Formation
Total questions: 20
Worksheet time: 8mins
Name
Class
Date
1.
The Nebular Theory is:
a)
A theory on how the Milky Way galaxy was formed
b)
A theory on how the universe was formed
c)
A theory on how the solar system will be destroyed
d)
A theory on how the solar system was formed
2.
A nebula is:
a)
A cloud of ice
b)
A cloud of dust and gas
c)
A cloud of just gas
d)
A cloud of just dust
3.
The most abundant gases in a nebula are:
a)
Hydrogen & Oxygen
b)
Nitrogen & Oxygen
c)
Hydrogen & Helium
d)
Oxygen & Helium
4.
A nebula starts to move because:
a)
A nearby supernova
b)
A nearby star
c)
A passing spaceship
d)
A passing comet
5.
A nebula starts to collapse because of:
a)
A nearby star shining it's light
b)
A passing spaceship
c)
A passing comet
d)
Gravity
6.
As a nebula collapses it also begins:
a)
Expand
b)
Rotate
c)
Shake
d)
Turn to ice
7.
A nebula collapses down into a disk known called:
a)
A compact disk
b)
An irregular cloud
c)
An accretion disk
d)
An circular disk
8.
What forms in the very center of the accretion disk?
a)
A protosun
b)
A planet
c)
A protoplanet
d)
A planetesimal
9.
What is forming in the accretion disk away from the center?
a)
Light
b)
Protostars
c)
Planetesimals
d)
Hydrogen
10.
The planetesimals keep:
a)
Colliding and breaking apart
b)
Colliding and sticking together
c)
Colliding and bouncing around
d)
Breaking down into smaller pieces
11.
The group of inner planets are known as:
a)
The Terrestrial Planets
b)
The Gas Giants
c)
The Outer Planets
d)
The Hallow Planets
12.
What caused the lighter elements to leave the terrestrial planets?
a)
Gravity from the Gas Giants
b)
Nothing, the lighter elements stayed
c)
Gravity from the Sun
d)
Heat from the Sun
13.
The group of outer planets are known as:
a)
The Terrestrial Planets
b)
The Gas Giants
c)
The Inner Planets
d)
The Rocky Planets
14.
Why did the lighter elements stay in the Gas Giants?
a)
Just because the solar wind does not affect these planets
b)
Because they less dense
c)
Because the solar wind does not affect these planets AND their own gravity is strong enough
d)
Just because their own gravity is strong enough
15.
How long ago did these nebular processes start?
a)
4.6 years ago
b)
4.6 million years ago
c)
5.6 billion years ago
d)
4.6 billion years ago
16.
Intense pressure in the protosun (protostar) caused:
a)
Fire in the Sun to start
b)
Helium to break down into Hydrogen
c)
Nuclear Fusion to start
d)
Nuclear Fusion to end
17.
What percentage of the nebula will the Sun accumulate?
a)
99%
b)
1%
c)
50%
d)
75%
18.
The shape of the planets and dwarf planets after accumulating all their material is:
a)
Irregular
b)
A Sphere
c)
An Oval
d)
A disk
19.
What materials could not survive the heat where the rocky planets were formed?
a)
Gamma Rays
b)
Plasma
c)
Ice and Gas
d)
Rocks
20.
What two objects do scientists study to learn about the formation of the solar system?
a)
Comets & Asteroids
b)
Comets & Exoplanets
c)
Exoplanets & Asteroids
d)
Asteroids & Distant Stars
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