From stage 4 to stage 7 of star formation, the object plotted on the H-R diagram moves so that:
A) its luminosity decreases, while its temperature increases.
B) its luminosity decreases, while its temperature stays the same.
C) its luminosity increases, while its temperature increases.
D) its luminosity increases, while its temperature stays the same.
E) its luminosity stays the same, and its temperature stays the same.
A
You might also like to view...
Applications to Astronomy: The sun has apparent brightness B at the earth, which is 1.5 × 108 km away. What would be the apparent brightness of the sun at Pluto, which is 6.0 × 109 km from the sun?
A. 0.25 B B. 0.063 B C. 0.025 B D. 0.00063 B
What is the temperature in kelvins of the visible surface of the Sun?
a. 600 K b. 6 million K c. 6 billion K d. 6000 K
If nitrogen, Image, were pumped into your lungs at high pressure, what would happen to its solubility in your blood stream?
A) The greater the pressure, the greater the solubility. B) The greater the pressure, the lower the solubility. C) You cannot change solubility of a substance by changing the pressure. D) Nitrogen is not soluble in your blood.
Consider the sine of any angle between 30° and 40°. If the angle were doubled, what would happen to the sine of the angle?
a. It would double. b. It would more than double. c. It would increase but be less than double. d. In different cases, it could do any of the above.