Rotation & Revolution pt.2

Rotation & Revolution pt.2

1. Revolution

   • The Earth turns around the Sun in a west-east direction
     • It takes 365 days and 6 H to complete the revolution, or 1 solar year.
       • It covers 930 M KM during the journey, at a speed of 106000 KM/H
     • Consequences
       • Seasons
         • Spring/Autumn
           • When one hemisphere is neither fully turned towards or away from the sun.
         • Summer
           • When one hemisphere of the Earth is turned towards the sun
         • Winter
           • When one hemisphere of the Earth is turned away from the sun
       • Equinoxes
         • Day and night last the same amount of time all over the world
       • Solstices
         • The length of day and night is different in each hemisphere
       • Thermal zones
         • Tropical zones
           • Sun rays strike perpendicular to its surface. Temperatures are always high.
         • Temperate zones
           • Sun rays strike to an angle. Temperatures are moderate.
         • Frigid zones
           • Sun rays strike the Earth's surface at a wider angle. Temperatures are always low.