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Date
Section 29.2 The Terrestrial Planets
Main Idea
Mercury, Venus,
Earth, and Mars
Use with pages 780–785.
(continued)
Details
Describe Mercury by completing the following sentences.
Unlike Earth, Mercury has little
made up of mostly
to the
and
. What does exist is
. Mercury’s surface is similar
surface because it is covered with craters and plains.
The surface gravity is
than that of the Moon. The
of Mercury suggests the planet has a large
core.
Identify three reasons why life can exist on Earth.
1.
2.
3.
Create a postcard describing the atmosphere and the surface
of Mars. Imaging that you are visiting Mars and sending your
postcard to a friend at home.
R EAL-W ORLD CONNECTION
Hypothesize what conditions on the terrestrial planets would be like today if their atmospheres had been warmer and richer
in carbon dioxide.
Our Solar System
351