MAGNETISM
IS
A
____________________
-
____________________
FORCE
.
IT
IS
A
____________________
____________________
____________________
FORCE
.
MAGNETS
HAVE
TWO
____________________
.
OPPOSITE
POLES
____________________
AND
PULL
____________________
.
THE
SAME
POLES
____________________
AND
PUSH
____________________
.
GRAVITY
WAS
DISCOVERED
BY
____________________
____________________
.
IT
IS
A
____________________
____________________
FORCE
.
IT
PULL
TOWARDS
EARTH
.
GRAVITY
ON
____________________
IS
STRONGER
THAN
ON
THE
____________________
BECAUSE
THE
EARTH´S
MASS
IS
____________________
THAN
THE
MOON
MASS
.
IT
IS
MEASURED
IN
____________________
.
UPTHRUST
IS
A
____________________
,
PUSH
FORCE
APPLIED
BY
____________________
AND
____________________
.
IT
PUSHES
OBJECTS
IN
AIR
AND
WATER
UP
.
UPTHRUST
IS
AN
OPPOSITE
FORCE
TO
____________________
.
GRAVITY
PULLS
AND
OBJECT
DOWN
AND
____________________
PUSHES
IT
____________________
.