Answer each of the following questions for our local sky. A. Where is the north celestial pole in our sky? B. Is Polaris a circumpolar star in our sky? Explain. C. Describe the meridian in our sky. D. Describe the celestial equator in our sky
What will be an ideal response?
A. Answers will vary with latitude; here is a sample for 40°N: The north celestial pole appears at an altitude of 40°, in the direction due north.
B. Yes, for any location in the Northern Hemisphere; no, for any location in the Southern Hemisphere. Polaris is circumpolar because it never rises or sets in our sky. It makes a daily circle, less than 1° in radius, around the north celestial pole.
C. The meridian is a half-circle that stretches from the due south point on the horizon, through the zenith, to the due north point on the horizon.
D. Answers will vary with latitude; here is a sample answer for 40°N: The celestial equator is a half-circle that stretches from the due east point on the horizon, through an altitude of 50° due south, to the due west point on the horizon.
You might also like to view...
What is the next energy level that fills after the 4d energy level is full?
a. 5p c. 6s b. 4s d. 4f
Interstellar extinction and the reddening of light by the interstellar medium (ISM) are both caused by _____
a. atoms and molecules in the ISM b. only atoms in the ISM c. only molecules in the ISM d. only dust in the ISM e. dust, atoms and molecules of the ISM
Newton's version of Kepler's third law states: p2 = × a3 According to this, what observational information does one need in order to calculate the combined mass of a planet and its moon?
A) the orbital period and the density of the two objects B) the average distance between the two objects and the orbital period C) the radius of the two planets in meters and the average distance between them D) It is impossible to determine the mass of any astronomical object.
When a magnetic field causes a charged particle to move in a circular path, the only quantity listed below which the magnetic force changes significantly as the particle goes around in a circle is the particle's:
a. energy. b. momentum. c. radius for the circle. d. time to go around the circle once.