Latitude and Longitude, Time, and Earth Movements

1. Which circle of latitude is also referred to as the “Medicine Line”?

  1. 39th Parallel north
  2. Tropic of Cancer
  3. 49th Parallel north
  4. Arctic Circle
Show Answer

Answer: Option C. 49th Parallel north

2. What is the radius of the earth?

  1. 12,742 kilometers
  2. 6,371 kilometers
  3. 3,959 miles
  4. 5,000 miles
Show Answer

Answer: Option B. 6,371 kilometers

3. What is the average density of Earth in grams per cubic centimeter(g/cm3)?

  1. approximately 10.45 g/cm³
  2. approximately 7.86 g/cm³
  3. approximately 4.51 g/cm³
  4. approximately 5.514 g/cm³
Show Answer

Answer: Option D. approximately 5.514 g/cm³

4. How many degrees of longitude equal to one hour?

  1. 15 degrees
  2. 30 degrees
  3. 45 degrees
  4. One degree
Show Answer

Answer: Option A. 15 degrees

5. What is another term for one minute of arc of latitude along any meridian?

  1. One Nautical mile
  2. One Kilometer
  3. One Degree
  4. One Meter
Show Answer

Answer: Option A. One Nautical mile