Question

1. what is the prime meridian used to measure?

a. distance east or west of it

b. distance north or south of the equator

c. projection methods

d. scale of a map

Explanation:

• Option a: The prime meridian (0° longitude) is the reference line for measuring longitude, which represents the distance east or west of it.
• Option b: Distance north or south of the equator is measured by latitude, not the prime meridian.
• Option c: Projection methods are about representing the Earth’s surface on a map, not related to the prime meridian’s measurement purpose.
• Option d: The scale of a map relates to the ratio of map distance to real - world distance, not what the prime meridian measures.

Answer:

a. Distance east or west of it