By Thomas McGuire
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5. 5 cm3. What is the density of this rock? 25 g/cm3 6. What is the most important reason that scientists display data in graphs? (1) (2) (3) (4) Graphs Graphs Graphs Graphs never contain errors. take less room than data tables. make data easier to understand. make papers easier to get published. 7. Which of the following would be a complete label for the vertical (y) axis of a graph? (1) (2) (3) (4) mass of the sample volume of the sample degrees Celsius number of correct responses 8. A student measured the mass of a rock as 20 g.
Therefore, when it is noon where you are, in places to your east, the local time is afternoon, and in places to your west it is still morning. Because the sun appears to move around Earth in 24 hours, each hour of time difference repre1 sents 24 of 360°, or 15°. So, each 1-hour difference in time from one location to another represents 15° of longitude. 46 CHAPTER 2: EARTH’S DIMENSIONS AND NAVIGATION Using the time difference of 15° per hour, you can determine the numerical value of longitude. But how can you determine whether it is east or west longitude?
In that activity, you determined the difference between clock time and solar time. , the difference between clock time and solar time is Ϫ5 minutes. , the difference between clock time and solar time is ϩ9 minutes. ) For any location in New York State, you can find Greenwich Mean Time by adding 5 hours to your clock time. M. M. ) Once you have calculated your longitude experimentally, you can check your results with a map of New York State, such as the Generalized Bedrock Geology of New York State found on page 433 or in the Earth Science Reference Tables, that shows local latitude and longitude.