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23 Cards in this Set

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LAW OF UNIVERSAL GRAVITY
DEFINITION
-EVERYTHING PULLS ON -EVERYTHING ELSE IN A WAY THAT SIMPLY INVOLVES MASS AND DISTANCE

-GREATER MASSES MEANS
GREATER ATTRACTION
(DIRECTLY PROPORTIONAL)

-GREATER DISTANCE SEPRATING
WEAKER ATTRACTION
(INVERSELY PROPORTIONAL)
LAW OF UNIVERSAL GRAVITY
FORMULA
FORCE IS PROPORTIONAL TO MASS1 x MASS2 ÷ DISTANCE²

F = (m1)(m2)
UNIVERSAL GRAVITATIONAL CONSTANT
DEFINITION
CHANGES THE LAW OF UNIVERSAL GRAVITATION FROM A PROPORTION
TO AN EQUATION
UNIVERSAL GRAVITATIONAL CONSTANT
FORMULA
--------------------
UNIVERSAL GRAVITATIONAL CONSTANT (G)

MAGNITUDE
6.67 x 10ˉ¹¹N·m ²/kg²

-MAGNITUDE OF G IDENTICAL OF FORCE BETWEEN PAIR OF 1kg MASSES 1 METER APART
INVERSE SQUARE LAW

DEFINITION
-LAW RELATING THE INTENSITY OF AN EFFECT TO THE INVERSE SQUARE OF THE DISTANCE FROM THE CAUSE

-GRAVITY, ELECTRIC, MAGNETIC, LIGHT, SOUND, RADIATION ALL FOLLOW THIS LAW
INVERSE SQUARE LAW

FORMULA
INTENSITY ~
1
-

(d=BETWEEN CENTER MASS)

1 DISTANCE UNIT
=1 AREA UNIT
=1 LAYER THICK
2 UNITS OF DISTANCE
=4 AREA UNITS
=1/4 LAYER THICK
3 AREA UNITS
=9 AREA UNITS
=1/9 LAYER THICK
INVERSE SQUARE LAW

EXPLANATION
d = DISTANCE BETWEEN 2 OBJECTS CENTER MASSES

GREATER DISTANCE FROM EARTHS CENTER, LESS WEIGHT OF OBJECT

OBJECT WEIGHS 1/4 AS MUCH, TWICE AS FAR AWAY FROM EARTH CENTER
SPRING TIDES

DEFINITION
-SUN, EARTH, MOON ARE ALIGNED

-TIDES DUE TO THE SUN AND MOON COINCIDE

-HIGHER THAN AVERAGE HIGH TIDES

-LOWER THAN AVERAGE LOW TIDES

-FULL MOON
NEAP TIDES

DEFINITION
-MOON IS HALFWAY BETWEEN A NEW MOON AND FULL MOON

-SUN AND MOON TIDES CANCEL EACH OTHER

-HIGH TIDES LOWER THAN AVERAGE

-LOW TIDES ARE HIGHER THAN AVERAGE
GRAVITATIONAL FIELD

DEFINITION
PROPERTIES OF SPACE SURROUNDING ANY MASSIVE BODY CAN BE CONSIDERED TO BE CHANGED IN A WAY THE ANOTHER MASSIVE BODY IN THIS AREA EXPERIENCES A FORCE
GRAVITATIONAL FIELD
INSIDE PLANET
G AT SURFACE

1/4 DOWN WOULD BE 1/4 G

1/2 DOWN WOULD BE 1/2 G

CENTER WOULD BE O G

ACCELERATION WOULD DECREASE AS REACHED CENTER
GRAVITATIONAL FIELD
CAVERN IN CENTER OF PLANET
G = 0 NO MATTER WHAT SIZE THE CAVERN
WEIGHT

DEFINITION
FORCE THAT AN OBJECT EXERTS ON A CERTAIN SURFACE (OR, IF SUSPENDED, ON A SUPPORTING STRING) WHICH IS OFTEN, BUT NOT ALWAYS, DUE TO THE FORCE OF GRAVITY
WEIGHTLESS

DEFINITION
BEING WITHOUT A SUPPORT FORCE, AS IN FREE FALL.
BLACK HOLE

DEFINITION
A CONCENTRATION OF MASS RESULTING FROM GRAVITATIONAL COLLAPSE, NEAR WHICH GRAVITY IS SO INTENSE THAT NOT EVEN LIGHT CAN ESCAPE.
WEIGHT

DEFINITION
FORCE THAT AN OBJECT EXERTS ON A CERTAIN SURFACE (OR, IF SUSPENDED, ON A SUPPORTING STRING) WHICH IS OFTEN, BUT NOT ALWAYS, DUE TO THE FORCE OF GRAVITY
WEIGHTLESS

DEFINITION
BEING WITHOUT A SUPPORT FORCE, AS IN FREE FALL.
BLACK HOLE

DEFINITION
A CONCENTRATION OF MASS RESULTING FROM GRAVITATIONAL COLLAPSE, NEAR WHICH GRAVITY IS SO INTENSE THAT NOT EVEN LIGHT CAN ESCAPE.
WEIGHT

DEFINITION
FORCE THAT AN OBJECT EXERTS ON A CERTAIN SURFACE (OR, IF SUSPENDED, ON A SUPPORTING STRING) WHICH IS OFTEN, BUT NOT ALWAYS, DUE TO THE FORCE OF GRAVITY
WEIGHTLESS

DEFINITION
BEING WITHOUT A SUPPORT FORCE, AS IN FREE FALL.
BLACK HOLE

DEFINITION
A CONCENTRATION OF MASS RESULTING FROM GRAVITATIONAL COLLAPSE, NEAR WHICH GRAVITY IS SO INTENSE THAT NOT EVEN LIGHT CAN ESCAPE.
UNIVERSAL GRAVITATIONAL CONSTANT
EXPLANATION
THE FORCE OF GRAVITY BETWEEN TWO OBJECTS IS FOUND BY:
-MULTIPLYING THEIR MASSES
-DIVIDE BY SQUARE OF DISTANCES BETWEEN CENTERS
-MULT RESULT BY CONSTANT G.