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BY KUSHAYLA JACKSON OCT. 19 2010 2 ND PERIOD THINK TANK FACTORY. rotation of the earth. WHY I CHOSE THIS TOPIC. WELL THE REASON I CHOSE THIS TOPIC IS BECAUSE : I WANT TO KNOW MORE AB OUT OUR HOME PLANET IM REALLY INTO ASTRONOMY
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BY KUSHAYLA JACKSONOCT. 19 2010 2ND PERIOD THINK TANK FACTORY rotation of the earth
WHY I CHOSE THIS TOPIC • WELL THE REASON I CHOSE THIS TOPIC IS BECAUSE : • I WANT TO KNOW MORE AB OUT OUR HOME PLANET • IM REALLY INTO ASTRONOMY • IM WANT TO BE ABLE TO ANSWER ?’S THAT ARE ABOUT MY HOME PLANET • EARTH’S ROTATION IS A VERY INTERESTING TOPIC
HERE’S A DEMONSTRATION • http://www.onr.navy.mil/focus/spacesciences/observingsky/motion1.htm • THIS IS THE EARTH IN IT’S TRACKS • THIS SHOWS YOU KIND OF HOW FAST OR SLOW THE EARTH ROTATES • THIS IS SOMETHING I THOUGHT MIGHT CLEAR UP WHAT IM TALKING ABOUT
HOW LONG IT TAKES THE EARTH TO ROTATE • Time 24 hr = 1670 km/hr Time to complete one Rotation = 24 hours • Earth's surface moves at the equator at a speed of about 467 m per second • SOME SCIENTIST SAY : EARTH IS 23 hr 56 min 4.1 sec OR 24 hr 0 min 0 sec
HOW DO YOU KNOW WHEN THE EARTH IS MOVING • WELL WE CAN TELL BY THE SEASONS, • DAY,NIGHT, & SHADOWS FROM THE SUN • THEY ALL SHOW US WHETHER WE’RE MOVING OR NOT • TWO OF THEM HAVE TO DO WITH TI M E • WE USE SOME OF THESE EXAMPLES TO HELP WITH THE ROTATION OF THE EARTH
WHY DO WE NEED TO KNOW ABOUT THE ROTATION OF THE EARTH WELL ,WHY WE NEED TO KNOW ABOUT THE ROTATION OF THE EARTH IS BECAUSE MANY THINGS ARE CHANGING IN TIME .