________ 1 . In the H/R diagram, stars are classified into main sequence stars,
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Question
________ 1 . In the H/R diagram, stars are classified into main sequence stars, dwarf stars, and giant/supergiant stars by using, in part, which of the following measurements of the stars?
A. density & gravity B. brightness & temperature C. volume & mass D. size & age
________ 2. Where are the elements with comparatively lower atomic mass (i.e., helium through iron) created?
A. in the core of a main sequence star C. in the supernova explosion of a high mass star
B. in the shell of a red giant star D. in a neutron star
________ 3. Where are the elements with comparatively higher mass (greater than iron) created?
A. in the core of a main sequence star C. in the supernova explosion of a high mass star
B. in the shell of a red giant star D. in a neutron star
________ 4. T or F: All the stars of any particular constellation are relatively close to each other in space.
________ 5. A main sequence star will never go through a giant or supergiant stage if its solar mass is ___.
A. high B. medium C. low
________ 6. In a main sequence star, the balance of two opposing forces prevents the star from either exploding or collapsing (i.e., imploding). What are the two opposing forces inside a star? (Chose one letter.)
A. 1 and 2 D. 2 and 4 1. fission pressure 3. fusion pressure
B. 1 and 3 E. 3 and 1 2. gravity 4. inertia
C. 2 and 3 F. 4 and 3
________ 7. The change from a protostar stage to a true star stage involves the beginning of what process?
A. accretion B. contraction C. spinning D. fission E. fusion
________ 8. Considering the above question, where does that process begin to take place in the true main sequence star?
A. in the star’s shell B. in the star’s core C. in both the star’s core and shell
Explanation / Answer
1. B. Brightness and temperature.
2. D. in a neutron star
3.B. in the shell of a red giant star
4.FALSE
5A. HIGH.
6.C,2 AND 3
7. E. fusion
8.A. in the star’s shell
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