During ?+ decay
A) a neutron is transformed to a proton.
B) a proton is transformed to a neutron.
C) a neutron is ejected from the nucleus.
D) a proton is ejected from the nucleus.
E) the number of nucleons decreases.
B
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Which of the following statements comparing the jovian interiors is not thought to be true?
A) They all have the same exact set of internal layers, though these layers differ in size. B) They all have cores of roughly the same mass. C) They all have cores that contain at least some rock and metal. D) Deep inside them, they all have pressures far higher than that found on the bottom of the ocean on Earth.
Atomic Nucleus: Write the standard nuclear notation for the following nuclei: hydrogen-2, sulfur-33, and lead-207.
What will be an ideal response?
Why do we believe that starburst galaxies represent a temporary stage in galaxy evolution?
A) We observe starbursts to last only a few years at a time. B) Such galaxies produce so much light that they would have consumed all their gas long ago if they had always been forming stars at this high rate. C) We don't see any nearby starburst galaxies. D) All starburst galaxies look like normal spiral galaxies, aside from the starbursts.
A rock's initial melting temperature is primarily determined by
A) the rocks mineralogy. B) its water content. C) its internal temperature. D) its heat source.