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# How do I use Maps and Globes?

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by

## Katelyn Kearns

on 20 August 2013

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#### Transcript of How do I use Maps and Globes?

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli
How do I use Maps and Globes?
How to locate places
Lines on globes and maps provide information that can help you easily locate places on the earth. These imaginary lines are called
longitude
and
latitude
, and they are measured in
degrees
.
Hemispheres
Globes vs. Maps
A
globe
is most accurate because it is the same shape as the earth, so it gives a true picture. A map is a
flat drawing
of the earth's surface, but it can show small areas in great detail,
unlike
a globe.
Map Projections
Cartographers developed different kinds of
map projections
to show the earth on a flat piece of paper.
Grid System
The imaginary lines of longitude
and latitude crisscross to form a
grid system.
Latitude
Latitude = fatitude
Lines of latitude are
parallels
, they run east to west but they MEASURE
north and south
.
Longitude
Longitude = LONG (up and down)
Lines of longitude, or
meridians
, circle the earth from Pole to Pole, they run north and south but MEASURE
east and west
.
The globe is what shape? A
sphere
! So half of it would be a "half sphere" or
hemisphere
.
Equator
The
equator
is a line of latitude, at 0 degrees, and it separates the Northern Hemisphere from the
Southern Hemisphere
.
Prime Meridian
The
Prime Meridian
is a line of longitude at 0 degrees, which separates the
Eastern Hemisphere
from the
Western Hemisphere
.
Cartographers
Cartographers are
map makers
, and they use mathematical formulas to transfer information from a
round globe to a flat map
.
Goode's Interrupted Equal-Area Projection
shows continents close to their true shapes and sizes
Robinson Projection
Has minor distortions, Eastern and Western Hemisphere are truer to form, but the areas near the
North and South Poles
are most distorted.
Distorted: twisted out of shape.
Winkel Tripel Projection
Good overall view of continent's shapes and sizes. Land areas near the Poles aren't as distorted as with
Robinson Projection
.
Mercator Projection
Shows true direction and land
shapes
fairly accurately, but not
size or distance.
Full transcript