Download Name: Period: ______ Uranus and Neptune The Discovery of

Name: _________________________________________ Period: __________
Uranus and Neptune
The Discovery of Uranus
Discovered in 1781 by William ________________; first planet to be discovered in more than 2000 years
First planet discovered by a ___________________
The Discovery of Neptune
Neptune was discovered in 1846, by Urbain ___________________.
Analysis of Uranus’s orbit indicated Neptune’s presence.
First planet discovered by ___________________.
Confirmed _________________________________________________________
Physical Properties of Uranus and Neptune
Uranus and Neptune are very similar:
Uranus
Neptune
Mass
Radius
Density
Peculiarity of Uranus: axis of
___________________lies almost in the
plane of its orbit.
___________________variations are
extreme.
Outer atmospheres of Uranus and Neptune
are similar to those of Jupiter and Saturn
Uranus and Neptune are cold enough that ___________________freezes;
___________________dominates and gives the characteristic blue color
Uranus is very ___________________; clouds only in lower, ___________________layers.
Few features are visible
___________________structure of Neptune is more visible, and Neptune has internal
______________________________of unknown origin
Neptune has storm systems similar to those on Jupiter, but ___________________
Gas Giants
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Name: _________________________________________ Period: __________
Uranus and Neptune
Magnetospheres and Internal Structure
Uranus and Neptune both have substantial
___________________fields, but at a large angle to
their rotation axes.
The rectangle within each planet shows a bar magnet
that would produce a similar field. Note that both
Uranus’s and Neptune’s are significantly
______________________________________.
Magnetic fields of Uranus and Neptune may not be
produced by ___________________, as the other planets’ fields are.
Interior structure of Uranus and Neptune, compared to that of Jupiter and Saturn:
The Moon System of Uranus
Uranus has ___________________moons, five of which are major: Miranda, Ariel, Umbriel, Titania, and
Oberon
Very similar to Saturn’s medium-sized moons, except that all are much less ___________________.
Umbriel is the darkest
___________________is the most unusual; origin of the cracks and grooves is unknown:
The Moon System of Neptune
Neptune has _________moons, but only two can be seen from Earth: ___________________and Nereid
Triton is in a ___________________orbit; Nereid’s is highly ___________________
Triton’s surface has few craters, indicating an ___________________surface
___________________geysers have been observed on Triton, contributing to the surface features:
Also, there appear to be ice ___________________
Gas Giants
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Name: _________________________________________ Period: __________
Uranus and Neptune
The Rings of the Outermost Planets
Uranus and Neptune have ___________________ring systems, recently detected.
Uranus’s rings are ___________________
Two ___________________moons keep the epsilon ring from diffusing:
Neptune has ___________________rings, three narrow and two wide:
Summary
•
Uranus, Neptune, were discovered in the last ___________________
•
Uranus and Neptune are similar: ___________________and ___________________
•
Uranus’s ______________________________________is almost in the plane of its orbit
•
Surface features are hard to discern on ___________________, but more obvious on
___________________
•
Uranus has no excess ___________________emission, but Neptune does
•
Uranus’s ___________________moons are similar to those of Saturn
•
Neptune’s moon Triton has a ___________________orbit
•
Uranus and Neptune both have ___________________ring systems
Planet
Mass
(x Earth)
Radius
(x Earth)
Density
Orbital
Period
Number of
moons
Rings?
Jupiter
Saturn
Uranus
Neptune
Gas Giants
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Moon
Planet it orbits
Name: _________________________________________ Period: __________
Uranus and Neptune
Size (small,
medium, large)
Known for…?
Io
Europa
Gannymede
Callisto
Titan
Enceledus
Rhea
Dione
Tethys
Mimas
Iapatus
Miranda
Umbrial
Triton
Gas Giants
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Name: _________________________________________ Period: __________
Uranus and Neptune
Gas Giants
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