Sidereal Time Measurements
This quiz tests your knowledge about sidereal time units including years, months, days, hours, minutes, and seconds.
Questions
What is the length of one sidereal year?
- 365.242 days
- 365.256 days
- 366 days
- 367 days
How many sidereal years are there in a century?
- 36,524
- 36,525
- 36,526
- 36,527
How many sidereal years are there in a millennium?
- 365,250
- 365,256
- 365,262
- 365,268
What is the difference between a sidereal year and a tropical year?
- 0.0078 days
- 0.0082 days
- 0.0086 days
- 0.0090 days
Why is a sidereal year longer than a tropical year?
- The Earth's axis precesses.
- The Earth's orbit is elliptical.
- The Sun's position changes over time.
- All of the above.
What is the length of one sidereal month?
- 27.322 days
- 27.323 days
- 27.324 days
- 27.325 days
How many sidereal months are there in a sidereal year?
- 12.368
- 12.369
- 12.370
- 12.371
What is the difference between a sidereal day and a solar day?
- 3 minutes 56 seconds
- 3 minutes 57 seconds
- 3 minutes 58 seconds
- 3 minutes 59 seconds
Why is a sidereal day shorter than a solar day?
- The Earth's axis precesses.
- The Earth's orbit is elliptical.
- The Sun's position changes over time.
- All of the above.
What is the length of one sidereal hour?
- 23 hours 56 minutes 4 seconds
- 23 hours 56 minutes 5 seconds
- 23 hours 56 minutes 6 seconds
- 23 hours 56 minutes 7 seconds
How many sidereal hours are there in a sidereal day?
- 24
- 24.002
- 24.004
- 24.006
What is the length of one sidereal minute?
- 59 minutes 8 seconds
- 59 minutes 9 seconds
- 59 minutes 10 seconds
- 59 minutes 11 seconds
How many sidereal minutes are there in a sidereal hour?
- 60
- 60.001
- 60.002
- 60.003
What is the length of one sidereal second?
- 59.8 seconds
- 59.9 seconds
- 60.0 seconds
- 60.1 seconds
How many sidereal seconds are there in a sidereal minute?
- 60
- 60.001
- 60.002
- 60.003