Review: T I D E S SEASONS MOON PHASES.

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Presentation transcript:

Review: T I D E S SEASONS MOON PHASES

WHY DO WE HAVE TWO (2) HIGH TIDES AND TWO (2) LOW TIDES EACH DAY? The Hopewell Rocks in New Brunswick, Canada WHY DO WE HAVE TWO (2) HIGH TIDES AND TWO (2) LOW TIDES EACH DAY?

gravity of the moon and … two High Tides and two Low Tides gravity of the sun Tides are caused by the gravity of the moon and … What causes tides? Generally occurs twice a day two High Tides and two Low Tides

CHALLENGE QUESTION: 2/27/15 WHY DO WE HAVE TWO (2) HIGH TIDES AND TWO (2) LOW TIDES EACH DAY? EARTH AND MOON CONSTANT MOVING – CONSTANT MOVEMENT RESULTS IN CHANGE OF TIDES HIGH LOW NEAP (90) SPRING (180)

review

The Earth’s axis is tilted 23.50 from vertical. The axis always points in the same direction in space.

Earth rotating = day and night (24 hrs) Earth orbiting (revolving) = seasons (365 days = 1 year)

Shortest day of the year Direct Indirect Summer Solstice June 21 First day of Summer Longest day of the year Winter Solstice December 21 First day of Winter Shortest day of the year Axis tilted toward Sun Summer for 3 months Direct sunlight Longer days; shorter nights Warmer temperatures Axis tilted away from Sun Winter for 3 months Indirect sunlight Shorter days; longer nights Cooler temperatures

Axis is parallel to the sun Vernal Equinox March 20 First day of Spring Autumnal Equinox September 22 First day of Fall Axis is parallel to the sun Both hemispheres get equal amount of sunlight

December 21 Winter Solstice March 21 Vernal Equinox December 21 Winter Solstice Spins (rotates to the East) June 21 Summer Solstice September 21 Autumnal Equinox

M O O N P H A S E S

S N E F 28 DAYS ABOUT A MONTH C O D WAXING 3RD QUARTER WANING GIBBOUS WANING CRESCENT S N E F O NEW MOON FULL MOON http://www.moongiant.com/phase/2/17/2015 WAXING GIBBOUS WAXING 1ST QUARTER D WAXING CRESCENT