A _____ is a commonly accepted set of scientific ideas and assumptions.

A _____ is a commonly accepted set of scientific ideas and assumptions.
 
  A) deferent
  B) paradigm
  C) theory
  D) hypothesis

Question 2

Ancient philosophers and astronomers accepted without question-as first principles-that:
 
  A) heavenly objects must move in circular paths at varying speeds.
  B) the planets are made of rock and gas, much like Earth.
  C) the Earth is motionless at the center of the Universe.
  D) there are many galaxies in the Universe.

Question 3

_____ was the first person to produce a detailed heliocentric model of the Universe with substantial justifying arguments.
 
  A) Aristotle
  B) Nicolaus Copernicus
  C) Claudius Ptolemy
  D) Galileo Galilei