1. The space between the stars is known to contain A. A large quantity of dust b
ID: 1836961 • Letter: 1
Question
1. The space between the stars is known to contain A. A large quantity of dust but no gas at all B. A variable amount of gas but no dust at all C. A perfect vacuum D. Both gas (atomic or molecular) and dust.
3. The most important property that determines the evolution of a star is its A. Temperature. B. Composition. C. Mass. D. Location.
5. If a star is in hydrostatic equilibrium A. It is in a stable binary orbit B. It is generating energy at the same rate everywhere C. It is near the end of its life D. It must be losing mass E. Its radiation pressure outwards and gravitational forces inwards are in bala
Explanation / Answer
(1) D. The space between the stars contains both atomic or molecular gas and dust.Athough the density is very less.
(3)A. The most important property of evolution of star is temperature .when the density becoms very high in the core of star teperature rises.when teperature becomes very high(milions of degrees) fusion reaction starts in the core and hydrostatic equillibrium gets stablizedand new star borns.
(5)E. If a star is in hydrostatic equilibrium,its radiation pressure outwards and gravitational forces inwards are in balace.
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