To receive ANY credit for this section, you MUST attempt at least 1 questions (5

Question

To receive ANY credit for this section, you MUST attempt at least 1 questions (5 points) in this section! 5) The ground state of any atom can only hold electrons due to the A. B. C. D. Two (2), Uncertainty Principle Eight (8), Pauli Exclusion Principle Two (2), Pauli Exclusion Principle Eight (8) in pairs of two (2), Pauli Exclusion Principle 6) Degeneracy pressure is the source of the pressure that stops gravity's crush in all the following. A. A black hole B. A white dwarf C. A neutron star D. The central core of the Sun after Hydrogen fusion ends, but before Helium fusion begins. CHAPTER 15 Y credit for this section, you MUST attempt at least 3 questions (15 points) in this section! 7) Suppose two stars were IDENTICAL in every way, EXCEPT for being located at significantly different distances from Earth, with no gas or dust between the Earth and the star to block any of its light. Which of these stellar properties will be different when measured or computed for these two stars? B. Spectral type C. Apparent Magnitude D. Surface Temperature E. Absolute Magnitude 8) If the temperature of a star INCREASES WITHOUT a change in the star's size, the star's position on the H-R diagram moves ...? A. Up and to the left B. Up and to the right C. Down and to the left D. Down and to the right E. It does not change 9) If a star was moved twice as far away, what would happen to the light we receive from it? A. It would get twice as faint B. It would get four times fainter C. It would get fainter and redder D. It would get fainter and bluer

Explanation / Answer

5. ground state of any atom always has 8 electrons in paairs of 2 due to paulis exclusion principle

hence option D.

6. degeneracy pressure stops the gravity from crushing the white dwarf, but neutron star and the black hole are formed when degeneracy pressure is not enough to hold the gravitational pull

hence option A and C

7. for identical stars at different distances from the earth

apparnt magnitude will be differnt

option C

8. if a cstars temeprature increases without change in size, luminosity increases and so does the temperature

hence th star moves to the left top corner

option A.

9. when the star moves twice far away, we get a quarter of the light due to thte inverse square rule

option B

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