Replies

To: All

Keep them coming!

6 posted on 09/19/2011 12:18:45 AM PDT by Hildy ("When the debate is lost, slander becomes the tool of the loser." - Socrates)

To: Hildy

Ask them:

What is the term for the difference in tonal quality heard when an approaching object (like a train) passes and is moving away?

you could even make it multiple choice:

A.) Gravity
B.) Speed
C.) the Doppler Effect
D.) the Poseiden Adventure

17 posted on 09/19/2011 12:57:13 AM PDT by DJlaysitup

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