What is parallax?
A) the apparent motion of an object due to the motion of the observer
B) the distance between two straight lines
C) the small circle that the planets slid along in Ptolemy's geocentric universe
D) the distance between two foci of an ellipse
Correct Answer:
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Q6: Which of the following describes the semi-major
Q7: Which of the following occur only when
Q8: What did Eratosthenes measure very accurately?
A)the size
Q9: The Copernican system was no more accurate
Q10: What is the term for a description
Q12: What is the term for a well
Q13: What do we call an orbit that
Q14: What did Galileo's observations of a complete
Q15: What feature of Ptolemy's model of the
Q16: Galileo's telescopic discoveries of mountains on the
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