1. This scientist played the largest role in attempting to improve the geocentric theory was:
   1. Thales
   2. Aristarchus
   3. Ptolemy
   4. Aristotle

2. This astronomer played a major role in the development of the heliocentric theory:
   1. Eratosthenes
   2. Copernicus
   3. Aristarchus
   4. Hipparchus

3. The scientist Hipparchus was most famous for:
   1. His calculation of the length of the year
   2. His trigonometric chords
   3. His autobiography
   4. His theory on the 3 planetary laws

4. The astronomer who formulated three laws of planetary motion was:
   1. Tycho
   2. Ptolemy
   3. Kepler
   4. Copernicus

5. The telescope was first used for astronomy by:
   1. Kepler
   2. Copernicus
   3. Newton
   4. Galileo

6. This English mathematician and scientist formulated the law of universal gravitation:
   1. Newton
   2. Galileo
   3. Cavendish
   4. Hugenes

7. This English astronomer discovered the mass-luminosity relationship for stars:
   1. Kepler
   2. Newton
   3. Eddington
   4. Shapely

8. This Germany scientist invented the instrument called the spectroscope that is still in use today:
   1. Eddington
   2. Bunsen
   3. Abbot
   4. Wolf

9. This scientist created a system known as sunspot numbers for studying solar activity by counting sunspots and sunspot groups:
   1. Bunsen
   2. Wolf
   3. Langley
   4. Galileo

10. This scientist invented the hypothesis light can be considered to be made up of particles called photons:
    1. Bunsen
    2. Einstein
    3. Newton
    4. Kepler

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©Copyright 1998 Elizabeth Beckett, Holly Bernitt, and Vishwa Chandra.