Use the dictionary, the acronym finder, and the word origins dictionary (links above) as needed. A new quiz is available each Monday through Thursday. This is the quiz for April 8.
During the past 100 years, astronomers have discovered quasars, pulsars, black holes and planets orbiting distant suns. But all these pale next to the discoveries Edwin Hubble made in a few remarkable years in the 1920s. At the time, most of his colleagues believed the Milky Way galaxy made up the entire cosmos. But, peering deep into space from the chilly summit of Mount Wilson in Southern California, Hubble realized that the Milky Way is just one of millions of galaxies that dot an incomparably larger setting.
Hubble went on to show that this galaxy-studded cosmos is expanding. He did nothing less, in short, than invent the idea of the universe and then provide the first evidence for the Big Bang theory. He discovered the cosmos and in doing so founded the science of cosmology.
1. Cosmos means
A. the solar system.
B. many galaxies.
C. everything that exists anywhere.
D. the Milky Way.
2. Hubble was the first to realize that
A. the Milky Way is the entire cosmos.
B. the Milky Way is only one of many galaxies.
C. the universe is huge.
D. pulsars are part of our universe.
3. The Big Bang is implied by
A. the expanding universe.
B. pulsars.
C. galaxies beyond the Milky Way.
D. the cosmos.
4. A galaxy is
A. the universe.
B. pulsars and quasars.
C. stars beyond the Milky Way.
D. an independent group of stars.
Use the dictionary, the acronym finder, and the word origins dictionary (links above) as needed. A new quiz is available each Monday through Thursday. This is the quiz for April 8.