Exam 25: Celestial Timekeeping and Navigation

Choose the appropriate star from Table S1.1 for the following questions: Table S1.1 -Suppose you live at latitude 20°S.Which star passes closest to your zenith on its daily path through your sky?

The Winter Triangle is formed by the stars Betelgeuse,Rigel,and Aldebaran.

Universal time,or UT,is

The Sun is on your meridian,and you have a UT clock that tells you it is 3 P.M.in Greenwich.What is your longitude?

When we say that Jupiter is at opposition we mean that it

Choose the appropriate star from Table S1.1 for the following questions: Table S1.1 -Suppose it is late June.Which star crosses your meridian around midnight? Assume you live at a latitude where all the stars on this list rise above your horizon each day.

All directions are south from the North Pole.

Which of the following best describes the Tropic of Cancer?

If you were standing on Earth's equator,where would you look to see the north celestial pole?

For the following questions,refer to Figure S1.2 which shows a portion of the sky visible in the early evenings in winter.Note that five bright stars are labeled with lowercase letters and five constellations are labeled with capitals.A few hints are also given. -Which bright star (lowercase letters)is Aldebaran?

As viewed from any place within the continental United States,noon on apparent solar time is defined as the moment when the Sun is

For the following questions,refer to Figure S1.1,which shows a portion of the sky visible in the early evenings in the fall.Note that five bright stars are labeled with lowercase letters and five constellations are labeled with capitals.A few hints are also given. -Which constellation (capital letters)is Taurus?

Process of Science: Give some examples of how human exploration of the Earth and our understanding of the Universe went hand in hand.

All the following statements are true.Which one explains why mean solar time differs from apparent solar time?

Suppose the date is March 21 and the Sun crosses your meridian at an altitude of 23.5° in the north.Where are you?

Consider the following data for four stars: -Suppose that you are looking at the sky at about midnight on the winter solstice.Which star will be nearest to your meridian?

Which of the following statements about sidereal and solar days is not true?

Which of the following is the reason for the leap years?