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5 Written questions

5 Matching questions

  1. To a physicist, a blackbody is defined as an object that
  2. Which of the following is a critical component of the scientific method?
  3. In the geocentric model of the solar system developed by Ptolemy, the planets move
  4. The term retrograde motion from a planet refers to the
  5. If a modern astronomer describes a faint star as being in the constellation Cygnus, the Swan, you know that the star is
  1. a in circular epicycles while the centers of the epicycles move in circular orbits around the Earth.
  2. b temporary reversal of the planet's normal west-to-east motion past the background stars as seen from the Earth.
  3. c testing of prediction from a scientific theory or theoretical model.
  4. d absorbs all radiation that falls on it.
  5. e somewhere within a particular region of sky having definite boundaries.

5 Multiple choice questions

  1. Right ascension
  2. closer to the Earth than the Sun is.
  3. Olympic swimmer exerting considerable force to maintain a constant speed in a straight line through the water.
  4. rotation of Earth on it axis.
  5. Newton's laws showed that planets can move around the Sun by themselves forever, without coming to rest.

5 True/False questions

  1. At what point in a planetary orbit is that planet's speed the slowest?at aphelion.


  2. The Copernican system for planetary motion isSun-centered, with the planets moving in perfect circles around the Sun.


  3. According to modern atomic theory, light emitted by atoms originates fromthe direction of an object's motion changes.


  4. The time period between two successive passages of a planet through the position of opposition isits synodic period.


  5. the energy flux, F, from a star is the amount ofSun-centered, with the planets moving in perfect circles around the Sun.


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