WorksheetsNebular Theory
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
Spinning of the Earth on its axis is called...
a)
rotation
b)
revolution
c)
orbit
d)
double axis
2.
What does REVOLUTION mean?
a)
To SPIN
b)
To ORBIT or GO AROUND
3.
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
4.
A nebula is:
a)
What planets are called before they form
b)
A cloud of dust and gas from an exploded star
c)
A large solar system
d)
A guess or idea
5.
A nebula starts to collapse because of:
a)
A nearby star shining it's light
b)
no one understands
c)
A passing comet
d)
gravity or pressure waves
6.
As a nebula collapses it also begins:
a)
Expand
b)
Rotate
c)
Shake
d)
Turn to ice
7.
What forms in the very center of the accretion disk?
a)
A protosun
b)
A planet
c)
A protoplanet
d)
A planetesimal
8.
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)
Nuclear fusion (explosion) of the star
9.
As the solar system continued to evolve, material in the disk collided with other material and grew into planetesimals, then protoplanets, and then planets. This process of growth by collision created a lot of heat, melting the early Earth. Growth by collision is called ___.
a)
differentiation
b)
accretion
c)
adsorption
d)
kinetic molecular theory
10.
How old is the solar system?
a)
4.6 thousand years
b)
4.6 million years
c)
4.6 billion years
d)
4.6 trillion years
100 %
