Exam 1 Practice Problems

Question 1

Approximately how many days does it take the moon to go from waxing crescent to waning crescent?

Answer 1

29.5 days

Question 2

If a star rises at 10 pm tonight, approximately what time will it rise a month from now?

Answer 2

2 hours

Question 3

If the moon rises at 6 pm one day, about what time will it rise three days later?

Answer 3

8:30 pm (50 later each day)

Question 4

If the moon rises at 6 pm one day, about what time what time did it rise one wee earlier?

Answer 4

Midnight

Question 5

How does a solar day compare to a sidereal day?

Answer 5

o Solar day (meridian crossing to meridian crossing) varies a tiny bit periodically (seconds less, seconds more). It is what our clocks are synced with (average of 24 hours over the length of the year)
o Sidereal day is 23 hours and 56 minutes and it is the time it takes any star (besides Polaris) to go from meridian to meridian

Question 6

The wispy, outermost layer of the sun, which can be seen with the naked eye during a total solar eclipse, is called the

Answer 6

Corona

Question 7

Of course you’re not supposed to look at the sun, but you can with special glasses, or at times when the sun is heavily obscured (like at sunrise or sunset). The layer of the sun we see with our eyes is called the

Answer 7

Photosphere

Question 8

On Thanksgiving Day in 2018 (on the 22nd of November) our clocks are set to Eastern Daylight Time. (T/F)

Answer 8

False