Download Planet Flash Cards

Planets
The Order of the Planets
1.
2.
3.
4.
5.
6.
7.
8.
9.
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Pluto
Inner Planet (Terrestrial)
-Mercury
-Venus
-Earth
-Mars
Outer Planet (Gas Giant)
Jupiter
Saturn
Uranus
Neptune
Retrograde Rotation
(spins backwards)
Venus
Uranus
Pluto
Smaller Than Earth
Mercury
Venus
Mars
Pluto
No Moons
Mercury
Venus
Has a ring system
Jupiter
Saturn
Uranus
Neptune
No Solid Surface
Jupiter
Saturn
Uranus
Neptune
Too far away to see without
a telescope.
Uranus
Neptune
Pluto
Mercury:
Closest to the Sun
Shortest Revolution
Venus:
Close in size to
Earth
“Earth’s Twin”
Hottest Average
Temp.
Very thick
atmosphere
Compare the sizes of the
Terrestrial Planets:
Earth:
1 moon (Luna)
Has liquid water
Has the only known life
Mars:
2 Moons
Thin Atmosphere
The “Red Planet”
Tallest volcano in solar system
Jupiter
Largest Planet
Made mostly of H and He
Many moons (about 64)
Has a red spot (1.5 X the diameter
of Earth)
Radiates more heat than it gets
from the Sun
Compare the sizes of the Gas
Giants
Saturn:
Made mostly of H and He
Many moons (about 32)
Less dense than water
Largest rings
Uranus:
Much smaller than Jupiter and
Saturn
Axis tilted at a 90 degree angle
Has many moons (27)
Neptune:
Much smaller than Jupiter and
Saturn
Many moons (13)
“Windy Planet”
Pluto:
Smallest Planet
Farthest out from the sun - coldest
planet
1 moon which is more than half the size
of Pluto
Orbit is so elliptical that it’s path is
inside Neptune’s for 20 years
It just became last again in 2005.
Compare the size of the Sun
to all 9 Planets!