Astronomy Key Terms

6 Written Questions

1. the name of the nebula that formed into our solar system.
2. dust and gas clumb together in huge intersellar clouds are so big that light takes many years to cross them.
3. the study of all physical objects beyond Earth.
4. is the time required for the Earth to revolute the sun once.
5. a section of the sky that contains a recognizable star pattern
6. an imaginary point in the sky direction above an observer on Earth

6 Multiple Choice Questions

1. The elliptical path a body takes as it travels around another body In space
   1. month
   2. zenith
   3. Orbit
   4. Nebula
2. the line at which the sky and Earth appear to meet
   1. horizon
   2. Orbit
   3. rotation
   4. month
3. a system for organizing time. most calendars organize time within a single unit called a year.
   1. year
   2. leap year
   3. calendar
   4. zenith
4. Is composed of the sun (a star) and the planets and other bodies that travel around thee sun.
   1. Solar Nebula
   2. leap year
   3. Orbit
   4. Solar System
5. a unit of length equal to the distance that light travels through space in 1 year.
   1. year
   2. leap year
   3. calendar
   4. light-year
6. the time required for the Earth to rotate once on its axis.
   1. month
   2. Orbit
   3. day
   4. year

5 True/False Questions

1. rotation → The spinning motion of a body on it's axis

   True        False

2. month → an imaginary point in the sky direction above an observer on Earth

   True        False

3. Planetesimal → a system for organizing time. most calendars organize time within a single unit called a year.

   True        False

4. leap year → is the time required for the Earth to revolute the sun once.

   True        False

5. altitude → The elliptical path a body takes as it travels around another body In space

   True        False