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Life In the Universe Exam 2 (set 2)

Terms in this set (85)

The spectrum of an extrasolar planet peaks in the
infared
What gases are called 'Greenhouse Gases" since they contribute the most to Greenhouse Effect?
CO2 h2O and methane
What is most important in protecting us from the solar wind?
the Earth's magnetic field
Th reason the core of the Earth is very iron-rich compared to the crust of the earth is
differentiation in the young molten earth
What has no global magnetic field
Mars and Venus
The magnetic field of the earth is caused by
the magnetic dynamo caused by the motion of charged particles in the liquid outer core
In the Greenhouse effect, what type of radiation is trapped by the Earth's atmosphere
Infrared radiation
What molecules contribute significantly to the Greenhouse Effect?
Carbon Dioxide
The Greenhouse Effect is caused by
Infrared light light from the Earth being trapped by the Earth's lower atmosphere
The albedo of a planet is
the reflectivity of the planet
Differentiation means
the tendency of dense material to sink and light material to rise in a gravitational field
The earth's magnetic field is generated by
the liquid outer core of the Earth
Infrared radiation from the Earth is
responsible for the greenhouse effect
Having a magnetic field may be a factor in whether or not a planet inhabited, because
a magnetic field protects us from the solar wind
The fact that the Earth's core is mainly iron is evidence that
the Earth was solid throughout its lifetime.
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