Spectroscopic and eclipse duration observations of an eclipsing binary star can enable astronomers ...

Spectroscopic and eclipse duration observations of an eclipsing binary star can enable astronomers to calculate________ of its individual stars.

a. the masses
b. the sizes
c. the masses and sizes
d. neither masses nor sizes

Question 2

Which of the waves below has the shortest wavelength?

a. gamma rays
b. X-rays
c. visible light
d. infrared
e. radio

Question 3

Groombridge 34 is an M1 V star. Based on this information, which of the following are true? I. Groombridge 34 has a surface temperature that is less than the Sun. II. Groombridge 34 has a mass that is greater than that of the Sun. III. Groombridge 34 is less luminous than the Sun. IV. Groombridge 34 is located near the middle of the H-R diagram.

a. I & II
b. II & IV
c. I & IV
d. I & III
e. II & III

Question 4

Which of the items below is electromagnetic radiation?

a. gamma rays
b. X-rays
c. visible light
d. radio
e. All of the other choices are correct.

Question 5

Vega is an A0 V star. Based on this information, which of the following are true? I. Vega has a surface temperature less than the Sun. II. Vega has a mass that is greater than that of the Sun. III. Vega is more luminous than the Sun. IV. Vega is located in the upper left-hand corner in the H-R diagram.

a. I & II
b. II & III
c. II, III, & IV
d. I, II, & III
e. I, II, III, & IV

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Spectroscopic and eclipse duration observations of an eclipsing binary star can enable astronomers ...

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