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#12
n/a
15
Astronomy
Undergraduate 1
04/16/2013

Additional Astronomy Flashcards

 


 

Cards

Term
which of the following appears most favoured by natural selection
Definition
intelligence
Term
how long between the evolution of single VS multicellular organisms
Definition
2.5 billion yrs
Term
the drake equation is attempting to find
Definition
the number of technological civilizations in the galaxy at a given moment
Term
what important molecules of life did miller and urey brew up
Definition
amino acids
Term
how long ago did multicelular life forms appear in the fossil record
Definition
one billion yrs ago
Term
according to our definition we have being a technological civilization for about
Definition
100 yrs
Term
the simplest life forms appeared on earth when it was how old
Definition
one billion yrs ago
Term
large molecules found in meteorites and interstellar clouds is evidence that
Definition
chemical evolution has taken place elsewhere in the universe
Term
organic molecules are
Definition
carbon-based
Term
why do we feel type O and B tars are poor candidates for extra-terrestrial life
Definition
their lifetime is too short
Term
which jovial moon has gotten the most attention from exobiologits
Definition
Europa
Term
most SETI searches are done at
Definition
radio wavelengths
Term
which of these radio waves would fall in the water hole
Definition
19 cm wavelength
Term
assuming for life the conditions ripe for life and intelligence abound in the galaxy , what factors limit the number of galactic civilizations
Definition
the average survival time of the civilization
Term
in drakes equation, which of the following is the closest estimate for the number of stars that are formed in the milky way
Definition
a star a month
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