How do a prominence and a flare differ?
A. A prominence is brief, bright eruption in the chromosphere; a flare is a tenuous flow of hydrogen and helium that sweeps across the Solar System.
B. A prominence is a huge plume of glowing gas trapped in the Sun's magnetic field; a flare is a brief, bright eruption in the chromosphere.
C. A prominence is a jet of hot gas thousands of kilometers long; a flare is an immense bubble of hot gas rising from deep within the Sun.
D. There is no difference between a prominence and a flare.
Answer: B
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What would happen if a white dwarf gained enough mass to reach the 1.4 solar-mass white dwarf limit?
A) The white dwarf would explode completely as a white dwarf supernova. B) The white dwarf would collapse in size, becoming a neutron star. C) The white dwarf would undergo a nova explosion. D) The white dwarf would collapse to become a black hole.
Which of the following would not be considered a physical property?
A) temperature at which a material catches on fire B) color C) conductivity D) hardness E) temperature at which a material melts
The number of degrees of arc that your location is North or South of the Earth's equator is called your
A. longitude. B. declination. C. meridian. D. latitude
The core of the Sun is
A) at the same temperature and density as its surface. B) composed of iron. C) constantly rising to the surface through convection. D) at the same temperature but much denser than its surface. E) much hotter and much denser than its surface.