1. Because the sun is not a solid body it exhibits differential rotation. As a result:
a. The rate of rotation is 28 days at the equator and 28 days at the poles.
b. The sun is yellow.
c. The rate of rotation is faster at the equator and slower at the poles.
d. The rate of rotation is slower at the equator and faster at the poles.
2. These finger-like projections are extensions of the chromosphere into the corona.
e. flares b. coronal mass ejections c. sunspots d. spicules
3. Scientists can determine the chemical composition of a star by studying its _____________.
a. size b. light c. age d. distance
4. What do we call the part of the Sun that is seen with the naked eye ?
a. the envelope b. the chromosphere c. the corona d. the core e. the photosphere
5. When is the solar corona best observed ?
a. never b. during a lunar eclipse c. during a solar eclipse d. at night
6. T – F Even though the Corona has a temperature of 4 million degrees it is not very hot.
7. This “texture”, seen in the photosphere, is created by clumps of rising and falling gas.
a. flares b. prominences c. granulation d. sunspots
8. T - F As one goes outward from the photosphere the temperature increases
9. To solar astronomers the time period from about AD 1645 to 1715 is known as “The Maunder minimum”.
During this time the sun had:
a. very few flares c. very few prominences
b. very few sunspots d. an unusually large number of sunspots
10. What is the period of the sun’s sunspot cycle ?
a. 11 years b. 22 years c. 7 years d.70 years
Bonus
11. What is the approximate mass of the sun?
a. 330,000 earth masses c. 1 M sun
b. 1 solar masses d. All of These
No comments:
Post a Comment