Why is the radiation so intense in the region that traces Io's orbit around Jupiter (the Io torus)?
A) The region is full of gases that become ionized after they are released from volcanoes on Io.
B) An orbital resonance between Io, Europa, and Ganymede makes the radiation intense.
C) Jupiter's strong magnetic field makes the radiation intense everywhere, and the region around Io is no different than any other region.
D) Io's gravity allows this region to capture huge numbers of charged particles from the solar wind.
A
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Which of the following compounds would not precipitate from an aqueous solution during a double-replacement reaction?
a. Cu(NO3)2 b. CuCO3 c. AgCl d. AlPO4
The Milky Way galaxy is about
A) 4 light years in diameter. B) 40 light years in diameter. C) 100 light years in diameter. D) 100,000 light years in diameter.
This figure shows an all-sky map of the cosmic microwave background recorded by the Planck mission. What do the dark and bright variations represent?
A) regions of the sky with very slightly different density at the time the radiation was emitted B) regions of the sky with different proportions of hydrogen and helium at the time the radiation was emitted C) the present distribution of galaxies in the universe D) regions of the sky with different amounts of dark energy
Intelligence may be subject to convergent evolution because it
A) is inevitable B) is a fundamental characteristic of life C) has survival value D) is required for survival