The main energy source that drives a supernova explosion is ____
a. a shock wave from the collapse of the iron core
b. a blast of gravitational waves emanating from the creation of a neutron star
c. a burst of neutrinos generated in the core collapse
d. energy from the radioactive decay of heavy elements
e. fusion of the remaining hydrogen in the star through a chain reaction
c
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Contrast the progenitors of a type I and a type II supernova
What will be an ideal response?
There is evidence that a collision between a spiral and an elliptical galaxy has produced a radio galaxy
Indicate whether the statement is true or false
Are there any kinds of situations in which the momentum of a moving system is not conserved?
A) No, because the momentum of any system is always conserved. B) Yes, if any part of the system is acted upon by forces external to the system. C) No, because the law of inertia demands that any moving system must keep moving. D) Yes, if some of the parts of the system collide with each other. E) Yes, if there is friction acting between different parts of the system.
As originally stated, the Copernican model did no better job of predicting planetary behavior than did the Ptolemaic one
Indicate whether the statement is true or false