A SETI search using the 300-meter diameter Arecibo radio ...

[sheilaspns]

A SETI search using the 300-meter diameter Arecibo radio telescope can pick up a 10 million Watt at a distance of 1,000 light-years.
 
  If we were to detect a similar signal coming from 10,000 light-years away, how powerful would the alien antenna have to be? A) 1 billion Watts
  B) 10 million Watts
  C) 10 billion Watts
  D) 100 million Watts

Question 2

In the periodic table of elements, members of each ________ have similar chemical properties.
 
  A) period
  B) row
  C) group
  D) transition

[bigcheese9]

Answer to Question 1

A

Answer to Question 2

C

[sheilaspns]

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[bigcheese9]

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