Mapping Satellite Data
Instructions for Students
To Pinpoint the Caribou's Latitude
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Column B: Find the latitude line nearest the caribou, directly to the south, and record that number here. Put a transparency on top of your map. Draw a line along this latitude line.
Column C: The caribou is a fraction of a degree north of the line you just drew for B. As given in the satellite data, record the fraction as a decimal in this column.
Column D: Measure the scale of your map for latitude. Record the scale here in mm per degree latitude.
Column E: Find out how far north (in mm) the caribou is located from the latitude line you drew for (B). To do this, multiply the decimal in column C by the scale of your map D and record the product here. Now draw a line this distrance north of the line you drew for (B). The caribou is located on this latitude line.
To Pinpoint the Caribou's Longitude
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Column G: Find the longitude line nearest the caribou, directly to the east, and record that number here. Put the transparency back on your map. Draw a line along this longitude line.
Column H: The caribou is a fraction of a degree west of the line you just drew for G. As given in the satellite data, record the fraction as a decimal in this column.
Column I: Measure the scale of your map for longitude. Record the scale here in mm per degree longitude.
Column J: Find out how far west (in mm) the caribou is located from the longitude line you drew for (G). To do this, multiply the decimal in column (H) by the scale of your map (I) and record the product here. Now draw a line this distrance west of the line you drew for (G). The caribou is located on this longitude line, exactly where it intersects the latitude line.
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