LESSON 1/LEARNING EVENT 2
PRACTICE EXERCISE
Instructions: Select the BEST response, and circle the correct answer.
1.
The direct wave uses--
a.
b.
c.
atmosphere.
d.
none of the above.
2.
A maximum sunspot number--
a.
means you can use higher frequencies.
b.
means you can use lower frequencies.
c.
has no effect on frequency selection.
d.
means a longer direct wave.
3.
A sunspot cycle is--
a.
4 years.
b.
8 years.
c.
11 years.
d.
15 years.
4.
The 27-day cycle relates to--
a.
moon's rotation.
b.
earth's rotation.
c.
frequency rotation.
d.
sun's rotation.
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