You are once again in a hot, dense place. You are surrounded by protons and neutrons, some rapidly fusing into helium. You notice that your surroundings are cooling (good, because it's really hot!) and rapidly dropping in density
Within about 3 minutes, the fusion reactions stop. Where are you? A) You are in the center of a star very much like our Sun.
B) You are in the early universe during the era of nucleosynthesis.
C) You are inside a nuclear power plant on Earth.
D) You are in the center of a star much smaller than the Sun.
E) You are in the center of a massive star near the end of its life.
B
You might also like to view...
Have astronomers ever seen a gas cloud that looks like it contains planetary systems that are in the process of forming?
A) Yes, there are many such clouds, including the Orion Nebula. B) Yes, but only the original cloud that formed our own solar system. C) Yes, but only in distant galaxies, not in our own Milky Way. D) No, there is no evidence that any interstellar clouds are currently giving birth to stars.
The proper abbreviation for ‘seconds' is ‘sec.'
Indicate whether the statement is true or false
The tail of a comet ________.
A. always points away from the Sun B. always points toward the Sun C. trails behind the comet, pointing away from the Sun as the comet approaches it, and toward the Sun as the comet moves out of the inner Solar System D. points toward the Sun on its way into the Solar System, and away from the Sun on its way out
The sum of the kinetic and potential energies of an object is conserved only when the object is under the influence of conservative forces
Indicate whether the statement is true or false