In the graph, each circle represents an individual star. The position of the circle’s center indicates the star’s temperature in kelvins (K) and its luminosity (rate of energy emission) relative to that of the sun (Lsun). Note that higher temperatures are to the left. The size of the circle indicates the relative physical size of the star, and the labels indicate the types of stars shown.
Select from each of the drop-down menus the option that creates the most accurate statement based on the information provided.
From the graph it appears that the color of a star is related to its temperature and not its size. For instance, all stars with temperatures in the __________ range are blue or white.Values for temperatures appear on the horizontal axis, the highest values to the left, 10,000 K in the middle, and lower values to the right.
Scanning the graph for symbols for stars that are blue or white, we see that all of them are on the left side of the graph. So, their temperatures are all over 10,000.
Thus, the only choice in the dropdown that works is 20,000 K - 40,000 K.
Select
20,000 K - 40,000 K.
Stars with temperatures below 4,000 K are generally __________.Since the temperatures decrease as we go from left to right on the graph, stars with temperatures below 4,000 K will be to the left of the 5,000 mark.
Scanning the graph, we see that most such stars are represented by red circles.
Select
red.
Correct answer: 20,000 K - 40,000 K,
red