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Lap - Lab Report Example

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Each observation follows this protocol: 1. Locate Polaris and plot that point on the chart, orienting the chart toward the northern horizon. 2. Use the star guide to identify and locate the Big Dipper. 3. Chart the location of the Big Dipper stars on the same chart as Polaris, relative to Polaris. 4. Wait the appropriate time interval and repeat so that three observations are charted on the same chart. Data and Calculations: The chart results: (INSERT CHART HERE) The Big Dipper appeared to rise while Polaris descended in the sky. Horizontally, they remain about the same distance apart. Conclusions and Analysis: Given the relative rising on the Big Dipper to the relative lowering of Polaris, the observer could conclude the stars were moving. Add the knowledge that the earth rotates toward the east, the observer can interpret this relative motion with that rotation. The furthest east, in this case, the Big Dipper will appear to rise more than the western star, in this case, Polaris over short periods of time. Since the two are maintaining relative distance horizontally, it decreases the possibility that they are moving, or they would have to move at the same velocity. If the earth rotation accounts for the motion, then they should stay relatively stable horizontally, because the observed motion would be at the same velocity, that of the rotation of the earth. The results were expected.

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Summary

Experiment #1: North Circumpolar Motion YOUR NAME Viewing location and other student present if any Statement of Purpose: The motion of stars relative to a set point, the North Star as observed from earth, raises questions concerning what is actually in motion…
Author : wilkinsonrussel
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