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GROUPSUBGROUPCONCEPTGradeSubjectTextINFOTextOBS
TextINQUIRY
TextREASON
TextMythVisWTypeVisWTextVisWLabel
Satisfactory level
Remark
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EarthPropertiesSpherical like a foot ball, flat at poles0000000
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EarthPropertiesBlue color as viewed from space due to presence of water0000000
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EarthPropertiesPresence of life due to water0000000
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EarthMotionRotationL Spinning movement about an axis, Period 24 hours0000000
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EarthMotionRevolution: Circling around the Sun, period ~365 days0000000
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EarthMotionRevolution: Elliptical orbits0000000
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EarthMotionPrecession motion: Change in direction earth's axis of rotation, (like a top). Period 26000 years0000000
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Earth
Duration of the Day time
Sun above horizon: Star at higher altitude stays above the horizon for a longer time than those below horizon0000000
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Earth
Duration of the Night time
Sun below horizon: vice versa0000000
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Pole StarLocated using nearby constellations, Ursa Major and Cassiopeia (North) and Crux and Centaurus (South)0000000
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EarthPole StarUsed in navigation0000000
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EarthPolesGeographic poles: two ends of axis of rotation0000000
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EarthLatitudeEquator: Plane perpendicular to axis of rotation passing through centre0000000
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EarthLatitudeEquator divides the sphere in two halves Norther/Souther Hemisphere0000000
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EarthLatitudeCircular slices parallel to the equator and perpendicular to axis of rotation0000000
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EarthLatitudeRepresented in degree, Angle is subtended by two points on the same longitude to the center of the earth, with one point fixed at the equator.0000000
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EarthLatitudeEquator (0 deg), Tropic of Cancer (23.5deg North), Tropic of Capricon (23.5deg South), North Poles (90degN), South Pole (90degS)0000000
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EarthLatitudeCircumference of the equator is the largest and it decreases as we go to higher latitudes. 0000000
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EarthLongitudeLines joining two poles line the orange slices0000000
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EarthLongitudePrime Medirean, referred as 0 hour longitude0000000
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EarthLongitudeRepresented in units of time. 360 deg::24 hours, then 10deg: ?? 0000000
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EarthLongitudeDay-Night line (12 hours)0000000
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EarthLongitudePrime Meridean and Day-Night line 0000000
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EarthLongitudeDistance between two longitudes decrease as we go from equator to poles0000000
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EarthLongitudeLocal meridean: When sun passes over head0000000
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EarthLongitudeTime Zone: Local time varies 0000000
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EarthDay-NightRotation of the earth about itself0000000
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EarthDay-NightSide facing the Sun has day0000000
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EarthDay-NightSide away from the Sun has night0000000
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EarthDay-NightPeriod of rotation: The solar day (Time taken by Sun to cross the same position in the sky.0000000
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EarthDay-NightPeriod of rotation: Sidereal day (Time taken by the earth to rotate by 360 deg.)0000000
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EarthSeasonTilt in the earth's axis0000000
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EarthSeasonThe revolution of the earth causes seasons to change.0000000
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EarthSeasonSummer-Hemisphere tilted towards Sun0000000
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EarthSeasonWinter- Hemisphere tilted away from Sun0000000
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EarthSeasonLong Summer day: Sun at higher altitude.0000000
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EarthSeasonShort winter day: Sun at lower altitude0000000
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EarthSeasonEqual day and night: on Equinox. Sun overhead at the equator0000000
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EarthSeasonDirect rays (overhead at noon) concentrated in small region 0000000
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EarthSeasonInclined rays (lower altitude at noon) spread over wide region0000000
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EarthSky colorRed color at horizon, (rayleigh scattering) red scattered less reach long distance0000000
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EarthSky colorBlue color: blue scattered more spreads around.0000000
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EarthAuroreaIllumination in the night sky near the Earth's poles, Aurora Borealis (Nort), Aurora Australis (South)0000000
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EarthAuroreaThey interact with Oxygen and Nitrogen in the atmosphere 0000000
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EarthAuroreaIllumination in the night sky near the poles0000000
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