6) Could our Sun ever undergo a nova or a white dwarf supernova
No, a nova cannot occur because we dont have a companion
star from which to steal material/mass. White dwarf supernovae
require a companion star as well to steal enough mass
1) Star formation:
The star begins as a cloud of hydrogen, helium, and very small
amounts of other gases. The cloud then collapse on itself. As the
cloud becomes denser, the temperature increases until the
gravitational crush begins the fusion of
4) Summarize the stages of life for a low-mass star.
Gravity collapses a molecular cloud creating a protostar that gets
hotter and denser and begins to rotate faster as gravity condenses it
and conservation of momentum. Eventually, the core beco
In supernova, elements heavier than Fe created
Leave behind a neutron star (or possible black hole)
Low mass stars leave a white dwarf behind
Are far less numerous
Mass Exchange in Binary Stars
Two stars in a binary system can be close enough to
Neutron degeneracy pressure is called a neutron star
If the remnant core is so massive that the force of gravity is greater
than the neutron degeneracy pressure:
The star collapses out of existence and is called a black hole
Problem Set 7
1) Suppose you have a chunk of water ice. Describe what happens to it, in terms
of phases, as you raise the temperature to millions of degrees. [10 pts]
The solid ice would begin to heat up. At around 0 degrees Celsius it would
begin to melt
10^6 Joules= (.5)(.2kg)v^2
That is faster than I expected. I cannot imagine that I would have to throw it that
fast in order to achieve the same amount of
5 points Save
What two physical processes balance each other to create the condition
known as gravitational equilibrium in stars?
The strong force and the electromagnetic force.
The gravitational force and outward pressure.
The gravitational fo
5 points Save
Which of the following statements best describes the difference between a
refracting telescope and a reflecting telescope?
Reflecting telescopes make much clearer images than can refracting
telescopes of the same size.
Problem Set 8
5) Briefly explain why spectral lines are useful in determining the
chemical composition of their source. [10 pts]
Spectral lines are useful in determining the chemical
composition of their source because every element has a