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5 Written questions

5 Matching questions

  1. Why was adaptive optics developed?
  2. Kepler's first law states that a planet moves around the Sun in a(n)
  3. In the geocentric model of the solar system developed by Ptolemy, the planets move
  4. When a solid body (or a dense gas such as a star) cools from a temperature of several thousand degrees, the color of the wavelength of maximum emission of radiation will
  5. An arc second is a measure of
  1. a elliptical orbit, with the Sun at one focus.
  2. b in circular epicycles while the centers of the epicycles move in circular orbits around the Earth.
  3. c angle
  4. d move steadily toward the red end of the spectrum.
  5. e to compensate for image distortion caused by the Earth's atmosphere.

5 Multiple choice questions

  1. closer to the Earth than the Sun is.
  2. opposition.
  3. Sun-centered, with the planets moving in perfect circles around the Sun.
  4. are 88 in number and cover the entire sky.
  5. 400 nm to 700 nm

5 True/False questions

  1. The best shape for the cross-section of a simple astronomical mirror in order to produce the sharpest images of very distant objects at its prime focus is a(n)parabolic shape.


  2. What is the half-life of a sample of matter containing radioactive element?time needed for half the radioactive atoms in the sample to decay.


  3. The chemical makeup of a star's surface is usually inferred bycelestial equator and the star, measured along a great circle passing through both celestial poles.


  4. What is the main reason for using several radio telescopes together as an interferometer?to obtain much better angular resolution or sharpness in the images.


  5. Which of the following is a critical component of the scientific method?testing of prediction from a scientific theory or theoretical model.