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RES - Chapter 2

Earth Science - Earth's Dimensions and Navigation

QuestionAnswer
Equator Imaginary line that circles Earth, and divides earth into the northern and southern hemispheres
Oblate Spheroid True shape of Earth - slightly flattened at poles, although not observable
Atmosphere Outer shell of gases that surrounds Earth
Hydrosphere Water of Earth
Lithosphere Solid rock covering of Earth
Troposhpere Atmospheres lowest, densest layer, where we live.
stratosphere later of atmosphere containing the ozone layer
mesosphere coldest layer of the atmosphere
Thermosphere highest layer of the atmosphere - extends into space
terrestrial coordinates Earth's system of latitude and longitude
Axis Imaginary line that passes through Earth's north and south poles
Latitude Angular distance north or south of the equator (drawn as parallel lines)
Longitude Angular distance east and west (lines drawn up and down)
Prime Meridian Reference line from which longitude is measured
Greenwich Mean Time (GMT) The basis of standard time throughout the world: based on measurements of the sun taken in Greenwich England
Saying used to remember time zone changes "West Less, East Increase"
Forms of evidence for Earth's spherical shape 1.) Ships seem to "disappear" as they sail over and below the horizon2.) During an eclipse, Earth casts a spherical shadow3.) Time differences4.) Celestial observations5.) *** photographs from space!!!
Created by: McGarvey AMS
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