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Topic: Action-Reaction: Answering Questions, Solving Problems.
Replies: 16   Last Post: May 19, 2013 10:44 PM

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Posts: 318
Registered: 11/8/09
Re: Action-Reaction: Answering Questions, Solving Problems.
Posted: May 19, 2013 10:33 PM
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On May 20, 12:30 pm, Sam Wormley <> wrote:
> On 5/19/13 9:19 PM, jdawe wrote:

> > See if you can measure the Earths rotation without linear grounding.
>    Fifth graders can sight a prominent star with two sticks and time
>    the 360° rotation of the earth on the following night.

They must stick those sticks in the ground. Alternatively they must
hold those sticks while standing vertically on the Earth.

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