The life history of a star is dependent upon what?
a. The amount of helium present
b. The speed of conversion of hydrogen to carbon or oxygen
c. The initial mass
d. The amount of energy output
ANS: C
The life history of a star is based on its initial mass. Stars convert hydrogen atoms into larger carbon
and oxygen atoms. Once the star begins to consume the carbon and oxygen it produced, it increases its
energy output. The rate of this is determined by temperature and size. Information can be found in the
section Stars and Seas
You might also like to view...
On the accompanying figure, what type of feature is located in the area of letter D?
A) Transform fault
B) Midocean ridge
C) Linear island chain
D) Fracture zone
In general, temperatures along an ocean coastline vary less than temperatures 100 miles inland. This moderation of temperatures along coastlines is because
A) as the oceans evaporate, the coastlines are cooled. B) the sun shines more intensely away from the ocean coastlines. C) ocean temperatures change more quickly than air temperatures. D) ocean temperatures do not change as quickly as air temperatures.
Why does Marshall Sahlins state that hunter-gatherers are the original affluent society?
a) They eat well, work little, and have lots of leisure time. b) They are rich in terms of meeting their needs. c) Their material wants are easily satisfied because they don’t want much. d) All of the above.
After a wave breaks the water continues to rush up the beach face toward land as a thin sheet of water called ____________________
Fill in the blank(s) with correct word