Presentation on theme: "Chapter 2, Section 2. If you were standing on Earth…how would you know what shape it was? If you were sailing…how would you figure out the shape of Earth?"— Presentation transcript:
If you were standing on Earth…how would you know what shape it was? If you were sailing…how would you figure out the shape of Earth?
Map vs. Globe Globe MAPGLOBE FLAT MODELSPHERE All or part of Earth’s surfaceEarth’s entire surface Seen from above Scale Symbols Key Compass
Maps and globes are drawn to scale and use symbols to represent topography and other features on Earth’s surface.
Which version is more accurate relative to size, shape and positions of objects? THE GLOBE!!!!
Features Scale – relates distance on a map to a distance on Earth’s surface Symbols – shapes and pictures that stand for feature on Earth’s surface Key – a list of all the symbols used on the map with an explanation of their meaning
Earth’s Reference System To locate positions on Earth’s surface, scientists use degrees.
Earth’s Reference System The equator forms an imaginary line that circles the earth.
The equator divides Earth into Northern and Southern hemisphere.
Earth’s Reference System A second imaginary line called the Prime Meridian makes a half circle from the North Pole to the South Pole and it passes through Greenwich, England. Areas that are east of the Prime Meridian are in the Eastern Hemisphere while areas west of the Prime Meridian are in the Western Hemisphere.
Mercator All lines of latitude and longitude appear as straight, parallel lines that form a rectangle Size and shape of landmasses near the equator are distorted a little, but they become more distorted as you go towards the poles
Conic Lines of longitude appear as straight lines while lines of latitude are curved Little distortion because it only shows a small part of Earth’s surface Frequently used for maps of the continental United States Conic Projection
Equal Area Correctly shows the relative sizes of Earth’s landmasses Shapes of landmass near the edges of the map appear curved and stretched