Movement of the earth

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Chapter 4
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Movement of the earth

• REVOLUTION- 365.26 DAYS 1 year
• ROTATION- 24 HOURS 1 day

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TILT OF THE EARTH

• SUMMER- 23 1/2 DEGREES TOWARD SUN
• WINTER - 23 1/2 DEGREES AWAY FROM THE SUN

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NO TILT

• SPRING- VERNAL EQUINOX
• FALL- AUTUMNAL EQUINOX

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MOON

• DRY
• AIRLESS
• BARREN
• NO ATMOSPHERE

• WONT CHANGE
• 4.6 BILLION YEARS OLD
• 4.6 BILLION- RING A BELL???????

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WHERE DID THE MOON COME FROM???

• CAPTURED IN EARTHS GRAVITY
• FORMED SAME TIME AS EARTH
• GIANT ASTEROID HIT - CHUNK BROKE OFF

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MOON

• GOES THROUGH PHASES EVERY 29.5 DAYS

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DOES MOON ROTATE?
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• YES

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• DARK SIDE OF THE MOON
• THE SIDE AWAY FROM THE SUN

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WHY CAN WE SEE MOON?

• SUN LIGHTS IT UP

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• WHY DOES IT HAVE PHASES?
• Sun hits it at different angles

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NEW MOON

• Does not light up at all

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WAXING CRESENT

• ¼ on right lit up

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1ST QUARTER

• RIGHT HALF LIT UP

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WAXING GIBBOUS

• ¾ OF RIGHT LIT UP

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FULL MOON

• ALL OF MOON LIT UP

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WANING GIBBOUS

• ¾ OF LEFT LIT UP

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THIRD QUARTER

• 1/2 OF LEFT LIT UP

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WANING CRESCENT

• ¼ ON LEFT LIT UP

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BACK TO NEW MOON

• 29.5 DAYS

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HELP ME REMEMBER

• WAXING ON TOP
• LIGHT ON RIGHT
• ¼ TO ½ TO 3/4

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HELP ME REMEMBER

• WANING ON BOTTOM
• LIGHT ON LEFT
• ¾ TO ½ TO ¼

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HELP ME REMEMBER

• GIBBOUS ON FULL SIDE
• CRESCENT ON NEW SIDE

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SOLAR ECLIPSE

• ( SUN ) ( MOON ) ( EARTH )

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LUNAR ECLIPSE

• ( SUN ) ( EARTH ) ( MOON )

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EFFECTS TIDES

• MOON CLOSER-
• HIGH TIDE

• MOON AWAY-
• LOW TIDE

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SPRING TIDEHIGHEST TIDE

• SUN AND MOON IN LINE
• SUN MOON EARTH

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NEAP TIDEhigher than high tide

• SUN AND MOON ON OPPOSITE SIDES
• SUN EARTH MOON

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SATELLITES

• COMMUNICATION
• WEATHER

• SCIENTIFIC
• NAVIGATION