Greenwich was chosen because the Prime Meridian (the line of ___° Longitude) runs through Greenwich.

The Greenwich Meridian (Prime Meridian or Longitude Zero degrees) marks the starting point of every time zone in _________

Greenwich was a royal park and palace on a hill to the south of the River ________ east of London, in the United Kingdom

GMT is _____________. Every 15° longitude represents one hour's difference in time

Although GMT has been replaced by _________ (UTC) it is still widely regarded as the correct time for every international time zone.

A prime meridian is the meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be ____°.

Together, a prime meridian and its anti-meridian (the _____th meridian in a 360°-system) form a great circle.

Mapmakers use the process of map projection to convert lines on a round surface to a flat one. There are certain characteristics of the map that will be distorted, such as shape, _______, distance and direction.

Longitude line are going ________

The line that divides the earth into the northern hemisphere and the southern hemisphere is called the _______

The equator is zero degrees ______

The Global Positioning System (GPS) is a constellation of about ______ artificial satellites. The GPS satellites are uniformly distributed in a total of six orbits such that there are four satellites per orbit.

What does GPS stand for?

Long ago, the stars, sun, a compass, a watch and ______ were used to determine your position.

______ is a navigational system using satellite signals to fix the location of a receiver on or above the earth's surface.

Another word for meridian is

The Longitude for Greenwich in England is ___ degrees