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Author Question: When was Pluto discovered? A) about 30 years ago B) about 80 years ago C) about 200 years ago ... (Read 16 times)

RRMR

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on: Jul 27, 2018
When was Pluto discovered?
 
  A) about 30 years ago
  B) about 80 years ago
  C) about 200 years ago
  D) about 2000 years ago
  E) in ancient history

Question 2

Scientists today do not accept the Ptolemaic model because
 
  A) it is ancient history.
  B) it was too complicated, compared to Copernicus' heliocentric model.
  C) it has been shown that Ptolemy faked his data.
  D) it had no explanation for retrograde motion.
  E) the work of Tycho and Kepler showed the heliocentric model was more accurate.


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momtoalll

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

E


RRMR

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

Joy Chen

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Reply 3 on: Yesterday
Wow, this really help

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