CONS 127 Midterm Exam W1 2024- Requires Respondus LockDown Browser|Questions and
Answers with complete solutions:University of British Columbia
,
,Course Foundation & Positioning
Question 1: What is the definition of latitude?
,,,,,answer,,,: An angle that describes the north-south position on Earth, ranging from 0° at the
Equator to 90° at the poles .
Rationale: Latitude measures how far north or south you are from the Equator using imaginary
horizontal lines called parallels.
Question 2: What is the definition of longitude?
,,,,,answer,,,: An angle that describes the east-west position on Earth, measured as the distance
east or west of the Prime Meridian .
Rationale: Longitude uses vertical lines (meridians) to determine position relative to the Prime
Meridian in Greenwich, England.
Question 3: Where is the Prime Meridian located?
,,,,,answer,,,: Greenwich, England .
Rationale: It is defined as 0° longitude, serving as the reference line from which east and west
measurements are calculated.
Question 4: What is a "parallel" in geography?
,,,,,answer,,,: A circle connecting all locations with a given latitude .
Rationale: Unlike meridians (which are half-circles), parallels are full circles that run east-west
around the globe.
Question 5: What are the three mathematical models used to define the Earth's shape?
,,,,,answer,,,: Sphere, Ellipsoid, and Geoid .
Rationale:
• Sphere: The simplest model (a = b), but least accurate.
• Ellipsoid: Accounts for the flattening at the poles (a ≠ b).
• Geoid: The most accurate model, based on gravity and sea level .
, Question 6: Which of the three Earth models is the most correct representation?
,,,,,answer,,,: The Geoid .
Rationale: The geoid represents the true physical surface of the Earth based on gravitational pull
and sea level, unaffected by tides and winds .
Question 7: What is the main difference between an Equivalent (Equal Area) and a Conformal map
projection?
,,,,,answer,,,:
• Equivalent: Preserves area (size) but distorts shape .
• Conformal: Preserves angles and local shape but distorts area .
Rationale: You cannot preserve both area and shape on a flat map. The Mercator
projection (conformal) makes Greenland look larger than Africa, though Africa is 14 times
larger .
Distance, Scale, and History
Question 8: How was a meter first defined historically?
,,,,,answer,,,: One ten-millionth of the distance from the Equator to the North Pole (along a
meridian through Paris) .
Rationale: The French Academy of Sciences defined it this way in the 1790s to create a universal,
nature-based unit.
Question 9: How is a meter defined now?
,,,,,answer,,,: The distance light travels in a vacuum in 1/299,792,458 seconds .
Rationale: Modern physics defines the meter based on the constant speed of light for absolute
precision.
Question 10: Which covers more area: a small-scale map or a large-scale map?
,,,,,answer,,,: A small-scale map .
Answers with complete solutions:University of British Columbia
,
,Course Foundation & Positioning
Question 1: What is the definition of latitude?
,,,,,answer,,,: An angle that describes the north-south position on Earth, ranging from 0° at the
Equator to 90° at the poles .
Rationale: Latitude measures how far north or south you are from the Equator using imaginary
horizontal lines called parallels.
Question 2: What is the definition of longitude?
,,,,,answer,,,: An angle that describes the east-west position on Earth, measured as the distance
east or west of the Prime Meridian .
Rationale: Longitude uses vertical lines (meridians) to determine position relative to the Prime
Meridian in Greenwich, England.
Question 3: Where is the Prime Meridian located?
,,,,,answer,,,: Greenwich, England .
Rationale: It is defined as 0° longitude, serving as the reference line from which east and west
measurements are calculated.
Question 4: What is a "parallel" in geography?
,,,,,answer,,,: A circle connecting all locations with a given latitude .
Rationale: Unlike meridians (which are half-circles), parallels are full circles that run east-west
around the globe.
Question 5: What are the three mathematical models used to define the Earth's shape?
,,,,,answer,,,: Sphere, Ellipsoid, and Geoid .
Rationale:
• Sphere: The simplest model (a = b), but least accurate.
• Ellipsoid: Accounts for the flattening at the poles (a ≠ b).
• Geoid: The most accurate model, based on gravity and sea level .
, Question 6: Which of the three Earth models is the most correct representation?
,,,,,answer,,,: The Geoid .
Rationale: The geoid represents the true physical surface of the Earth based on gravitational pull
and sea level, unaffected by tides and winds .
Question 7: What is the main difference between an Equivalent (Equal Area) and a Conformal map
projection?
,,,,,answer,,,:
• Equivalent: Preserves area (size) but distorts shape .
• Conformal: Preserves angles and local shape but distorts area .
Rationale: You cannot preserve both area and shape on a flat map. The Mercator
projection (conformal) makes Greenland look larger than Africa, though Africa is 14 times
larger .
Distance, Scale, and History
Question 8: How was a meter first defined historically?
,,,,,answer,,,: One ten-millionth of the distance from the Equator to the North Pole (along a
meridian through Paris) .
Rationale: The French Academy of Sciences defined it this way in the 1790s to create a universal,
nature-based unit.
Question 9: How is a meter defined now?
,,,,,answer,,,: The distance light travels in a vacuum in 1/299,792,458 seconds .
Rationale: Modern physics defines the meter based on the constant speed of light for absolute
precision.
Question 10: Which covers more area: a small-scale map or a large-scale map?
,,,,,answer,,,: A small-scale map .
