Can someone explain the meridians of longitudes with time zones and the division of longitudes?
Answers
Answer:
what are these lines and how are they drawn. The spinning of ... are called parallels of latitudes and the meridians of longitudes. ... from the equator towards the poles and divide the earth into two unequal ...Longitude is measured by imaginary lines that run around the Earth vertically (up and down) and meet at the North and South Poles. These lines are known as meridians. Each meridian measures one arcdegree of longitude. The distance around the Earth measures 360 degreesA (geographic) meridian (or line of longitude) is the half of an imaginary great circle on the Earth's surface, a coordinate line terminated by the North Pole and the South Pole, connecting points of equal longitude, as measured in angular degrees east or west of the Prime Meridian.
Answer:
Longitudes:
Longitudes are imaginary vertical line on the globe that run from north pole to south pole.They are also called meridians or meridians of longitude.
Longitudes are semi circular in shape unlike latitudes which are complete circles.
The mid or central longitude is the Prime Meridian at 00 longitude. It divides the earth vertically into parts East and West called hemispheres.
Every longitude therefore is followed by the letter E for east or W for west to state which side of the prime meridian it lies.
Unlike latitudes, longitudes are at equal length from north to south pole.
The distance between longitude decreases as you move towards the poles. As such, all longitudes converge or meet at the poles.
There 360 longitudes altogether on the globe, thus 180 in each hemisphere.
Longitudes and Time zones:
As latitudes help us to classify climatic or heat zone, longitudes help as to calculate time and classify time zones.
The prime meridian or Greenwich meridian is the central meridian against which the international standard time known as Greenwich Standard Time (GMT) is based.
Longitude and Time
Before 1850s, time was measured through solar clocks. There were no national or international conventions which set methods for measuring time, or knowing the time based on the beginning and end of the day, or to measure the length of an hour.
However, with the vast expansion of the railways and communication networks during the 1850s and 1860s, the worldwide need for an international time standard became imperative.