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Q: List four
differences between the surfaces and atmospheres of Mars and
Earth...... |
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A: For the atmosphere part of
the question, there are differences in the composition of
the air (both the elements that are present and their
relative percentages), the amount of gas in the atmosphere
(the air pressure), the temperature (it is much colder on
Mars), and different weather patterns (for example, there is
no rain on Mars). For the surface part of the question,
there are differences in the composition of the soil and
rocks (the presence of red, oxidized iron is notable on
Mars), the more obvious craters on Mars, much more volcanism
on Mars (note Olympus Mons), the absence of liquid water on
Mars, more dunes on Mars than on Earth, the size and
composition of polar ice caps (carbon dioxide ice over water
ice on Mars), and the absence of plants and animals on Mars.
Wind is the main cause of erosion on Mars - there are more
dust storms on Mars than there are on Earth (on Earth, water
is the major cause of erosion). (There are a lot more
differences, but these are the most obvious ones.) |
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