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science terms 10/4

TermDefinition
GRAVITY An invisible force that pulls 2 objects toward each other.
What TWO things is gravity affected by? Mass and Distance
MASS The amount of matter in an object. The more mass an object has the more gravitational pull it has
DISTANCE How far apart objects are. As distance between two objects INCREASES, their gravitational pull DECREASES and vice versa
Who is SIR ISAAC NEWTON? Known for theory of gravity, author and inventor, identifying the laws of motion, invented calculus; Invented reflected telescope
ROTATION The spin of a body (Earth) on its axis
What causes ROTATION? A leftover motion from the formation of a solar system
How long does it take Earth to ROTATE? 24 hours
AXIS An imaginary line around which the Earth rotates
REVOLUTION The motion of a body that travels around another body
What causes REVOLUTION? The earth tries to pull away from the sun as the sun tries to pull earth into it. Our orbit is the balance between the two
How much time does it take for the Earth to revolve around the sun? About 365 days
ORBIT The path that a body follows as it travels around another body in space
APHELION The point at which a planet or comet is farthest from the sun. Called apagee for our moon
PERIHELION A point at which a planet or comet is closest to the sun. Called Perigee for our moon
If it begins with an A... Its FAR away
If it begins with a P.... It's close to me
SUMMER The sun reaches its highest latitude (Tropic of Cancer) on or about June 2nd
WINTER The sun reaches its lowest latitude (Tropic of Capricorn) on or about December 21
AUTUMN The sun reaches the equator and moves south into the southern hemisphere on or about September 22
SPRING The sun reaches the equator and moves northward into the northern hemisphere on or about March 20
The 4 SEASONS are... Summer, Winter, Autumn, Spring
Created by: Mschautz0525
 

 



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