Lab 1: Maps I: A Visualization Tool – Worksheet



|Name: | | |Lab Section: | | |Date: | |

1. The scale of your map allows you to convert distances on a map to distances on the ground and vice versa. If you are out hiking, you can plan how far you want to go and allow enough time to get there, or looking back on your day, you can use the map to calculate how far you have gone.

a. Convert the following ratio scales to the indicated verbal scales.

|Ratio scale | |Verbal scale |

|1:24,000 | |1 inch = | |feet |

| | | | |miles |

| | |1 cm = | |meters |

| | | | |kilometers |

|1:62,500 | |1 inch = | |feet |

| | | | |miles |

| | |1 cm = | |meters |

| | | | |kilometers |

|1:250,000 | |1 inch = | |feet |

| | | | |miles |

| | |1 cm = | |meters |

| | | | |kilometers |

b. THE DISTANCE BETWEEN TWO AIRPORTS IS 3 INCHES ON A MAP AND 12 MILES ON THE GROUND. CALCULATE THE RATIO SCALE FOR THIS MAP.

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c. On a map with a ratio scale of 1:250,000, two points are separated by 3.7 inches. What is the distance in miles and kilometers between these points on the ground?

[pic]

d. A 5-mile stretch of highway will define a line how long on a map with a ratio scale of 1:24,000?

[pic]

2. To prepare for your backpacking trip, you have visited your local outdoor store to purchase a map of the area you will be hiking in. The sales clerk says the store has two maps of the area, one at a scale of 1:24,000 and the other at 1:62,500. To help you to decide which scale will show the greater detail, complete the following calculations.

a. Calculate the length of a 2-mile feature on the 1:24,000 scale map.

[pic]

b. Calculate the length of the same feature on the 1:62,500 map.

[pic]

c. Which map will show more area?

d. Which map will show greater detail?

e. If the area you will be hiking in is new to you and you want a map with greater detail to allow you to better identify surface features, which map should you buy?

3. Your instructor will provide you with a U.S.G.S. topographic map to answer the following questions.

|a. |What is the name of the map? | |

|b. |What is the series of the map? | |

|c. |When was it produced? | |

|d. |What is the most easterly longitude on the map? | |

|e. |What is the magnetic declination for the map? | |

|f. |The ratio scale for this map is: | |

|g. |What is the name of the map to the north of this one? | |

|h. |What is the northernmost latitude of the map? | |

| | | |

|i. |What is the distance between the two points labeled A and B? | |

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