Axis: imaginary line that passes through Earth’s center and the North & South Poles Earth’s axis tilt = 23.5° causes Earth’s seasons causes ‘length’ of day to change thruout the year
23.5° Plane of orbit
Rotation : Earth’s spinning on its axis causes night & day Earth rotates every 24 hours
Revolution: movement of one object around another Earth revolves around the sun every days
Orbit: an object’s path as it revolves around another object Earth’s orbit around the sun is slightly elliptical, not perfectly circular
23.5° Plane of orbit
When we are tilted toward the sun, we have summer. When we are tilted away from the sun, we have winter
Equator: imaginary line encircling the Earth like a belt at 0° latitude All lines of latitude are measured as north or south of the equator.
Tropic of Cancer: latitude 23.5° N Tropic of Capricorn: latitude 23.5°S
Arctic Circle: latitude 66.5° N Antarctic Circle: latitude 66.5°S
Petal, MS: latitude ≈ 31.3° North (longitude ≈ 89.3° West)
Solstice: 2 days of the year when the noon sun is directly overhead at either 23.5° S or 23.5° N 1.Summer: longest “day” of year (daylight) Around June 21 st (northern hemisphere) 2.Winter: shortest “day” of year (daylight) Around Dec. 21 st (northern hemisphere)
Equinox: 2 days of the year when the noon sun is directly overhead at the equator (equal amt. of day & night) 1.Vernal (spring) Around March 21 st (northern hemisphere) 2.Autumnal (fall) Around Sept. 21 st (northern hemisphere)
Seasons simulator Copy this diagram into your notes.
What season is it at your house in this animation? (AND HOW CAN YOU TELL?)
Eclipse - when Earth or the moon temporarily block the sunlight from reaching the other. SUN, MOON and EARTH aligned perfectly 2 types of eclipse: 1. Solar eclipse 2. Lunar eclipse
Solar eclipse: moon moves between the Sun and Earth. view of sun is blocked by the moon can be total or partial occurs during the day moon phase = new moon
Lunar eclipse: Earth is between sun and moon Earth blocks sunlight from reaching the moon occurs at night moon phase = full moon
FIN end seasons & eclipses 2016 notes
Station: HATTIESBURG, MSTemp. (°F)Precip. (in.) 1971 – 2000 Month Mean Jan495.0 Feb525.5 Mar596.0 Apr665.0 May735.0 Jun804.5 Jul826.0 Aug825.0 Sep774.0 Oct663.0 Nov574.0 Dec515.5 Check the checklist sheet for your season’s months & copy YOUR data onto your BW sheet. (MAKE A CHART!)