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Author Question: Sound vibrations with frequencies greater than 20,000 Hz are called A) infrasonics. B) ... (Read 54 times)

Chelseaamend

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on: Jul 27, 2018
Sound vibrations with frequencies greater than 20,000 Hz are called
 
  A) infrasonics.
  B) ultrasonics.
  C) supersonics.
  D) megasonics.
  E) infrared.

Question 2

What is the simplest way we might detect life on an extrasolar planet?
 
  A) listen for radio signals coming from an advanced civilization on the planet
  B) wait for aliens from the planet to visit us
  C) analyze the spectrum of reflected light from the planet
  D) send an interstellar probe to the planetary system


yasmin

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

B

Answer to Question 2

C


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