Astro set 3

  1. The point directly over your head is called
    The zenith
  2. Our solar system consists of ________.
    the Sun and all the objects that orbit it
  3. What is a circumpolar star?
    • a star that always remains above
    • your horizon
  4. What conditions are required for a solar eclipse?
    • The phase of the Moon must be new, and the nodes of the Moon's orbit must be nearly
    • aligned with Earth and the Sun.
  5. If you are located in the Northern Hemisphere,
    which of the following correctly describes a relationship between the sky and
    your location?
    The altitude of the north celestial pole equals your latitude.
  6. About how many stars are visible to the naked
    eye on a clear, dark night away from city lights?
    A couple thousand
  7. Galileo saw four large Moons orbiting Jupiter,
    thus providing evidence that supported the Earth Centered system.
  8. Each choice below describes how a few
    astronomical phenomena are related to time periods. Which list is entirely
    correct? (Careful: Some lists are partially correct.)
    • -Earth's
    • rotation defines a day.
    • -The cycle of the Moon's phases takes about a month.
    • -Earth's orbit defines a year.
    • -Earth's cycle of axis precession takes 26,000 years
  9. Which of the following is the reason for the
    solar day being longer than a sidereal day?
    • the combined effect of the
    • rotation of Earth and its orbit about the Sun
  10. A scientific model must make
    an observational prediction.
Card Set
Astro set 3
exam 1