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Planetary Motion
Test Description: Planetary Motion
Instructions: Answer all questions to get your test result.
1) Which scientist came up with the 3 laws of planetary motion?
A
Copernicus
B
Brahe
C
Kepler
D
Newton
2) The first Law of Planetary Motion states:
A
All planets orbit the Sun in ellipses.
B
The Sun is the center of the solar system.
C
Planets move in a circular motion in an orbit.
3) Earth's rotation means:
A
The Earth is orbiting the Sun.
B
The Earth is the third planet from the Sun.
C
The Earth is spinning on an axis.
4) Earth's revolution means:
A
The Earth is tilted on its axis.
B
The Earth is revolving around the Sun.
C
The Earth is revolving around the Moon.
5) The season's of the Earth are caused by:
A
The tilt of the Earth on its axis.
B
The revolution of the Earth.
C
The moon's gravity.
6) The 2 main gases in the Sun are:
A
Hydrogen and Helium
B
Hydrogen and Iron
C
Helium and Nitrogen
7) Tides are caused by?
A
The rotation of the Earth.
B
Strong winds moving across the ocean.
C
The pull of the moon and the Sun's gravity on the Earth.
8) The Sun produces energy through a process called?
A
nuclear fusion
B
nuclear fission
C
Fire from the gases
9) A galaxy contains how many stars?
A
Hundreds of thousands
B
Hundreds
C
Hundreds of billions.
10) Earth's axis slowly but continuously points in different directions, this is called?
A
Prescession
B
Gravity
C
Barycenter
*select an answer for all questions
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