Gentle gravitational tidal forces appear to be necessary to create spiral arms
a. True
b. False
Indicate whether the statement is true or false
True
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Death Valley in California receives many German tourists. When you convert a summer temperature reading of 130° F to the Celsius scale they use at home, you find that the Celsius temperature is about
a. 26° C. b. 54° C. c. 72° C. d. 176° C e. 327° C.
The Earth is closest to the Sun in which month of the year?
July June March January
A lunar month is about 28 days. If the Moon were farther from Earth than it is now, the lunar month would be
A) more than 28 days. B) less than 28 days. C) about 28 days.
If we represent the Milky Way Galaxy as the size of a grapefruit (10-cm diameter), the distance to the Andromeda Galaxy would be about
A) 10 cm. B) 3 m. C) 30 m. D) 1 km. E) 100 km.