Page 215 - Science Course 3 (Book 2)

Mo13-L3b: What are the Outer Planets Made Of?

Neptune

Atmosphere
Like Uranus, Neptune’s atmosphere is mostly
hydrogen and helium, with a trace of methane.
80% Hydrogen
19.0% Helium
1.5% Methane
Neptune size
compared to Earth

Key Concept

What are the Outer Planets Made Of?

How does the atmosphere and interior of Neptune
compare with that of Uranus?

Neptune
Distance from Sun:
30.33 AU(4,540,000,000 km)
Length of Day:
16 Earth Hours
Length of Year:
164.79 Earth Years
Type:
Ice Giant –2010C
13 Moons 5 Rings
Temperature

Neptune’s interior is also like Uranus’s, made of
partially frozen water and ammonia with a rock and
Neptune has at least 13 moons and a faint, dark ring
system iron core.
SUMMARY
.
What are the Outer Planets Made Of?
Uranus has an unusual tilt, possibly due to a
collision with a large object.
Mass : 1.02 x 10^26 kg (17 Earths)

Equatorial Diameter: 49,528 km
Polar Diameter: 48,628 km
Equatorial Circumference: 155,600 km

70 kg : Your weight on Neptune is 78.7 kg

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