Based on current evidence, a supercluster is most likely to have formed in regions of space where ________
A) the acceleration of the expansion was proceeding faster than elsewhere
B) the density of dark matter was slightly higher than average when the universe was very young
C) supermassive black holes were present in the very early universe
D) there was an excess concentration of hydrogen gas when the universe was very young
B
You might also like to view...
The larger variation in brightness in an eclipsing system consisting of a white dwarf and an M3 main-sequence star occurs when the white dwarf passes behind the M3 star
a. True b. False Indicate whether the statement is true or false
Go to the screen "Key Evidence of Water," and and select the feature called "Recurring Slope Lineae." Study this feature at each of the four zoom levels offered, and be sure to view the animation called "recurring slope linaea (gif)" that you will see at the third zoom level. Which of the following statements are true?
A. The recurring slope lineae are found among impact craters. B. The recurring slope lineae look like narrow dark streaks. C. The recurring slope lineae are found on flat ground. D. The recurring slope lineae appear to grow in spring and summer. E. The recurring slope lineae appear to be volcanic in origin.
Two pure tones are sounded together and a particular beat frequency is heard. What happens to the beat frequency if the frequency of one of the tones is increased?
A) It increases. B) It decreases. C) It does not change. D) It becomes zero. E) It could either increase or decrease.
A comet has an elliptical orbit around the Sun. Its total orbital energy is
A) greatest when it is farthest from the Sun. B) greatest when it is closest to the Sun. C) the same throughout its orbit.