QUESTIONS ACCURATE ACTUAL
EXAM / FREQUENTLY TESTED
QUESTIONS WITH DETAILED
ANSWERS | GUARANTEED PASS |
GRADED A | LATEST UPDATE
What causes the potential energy to decrease as a ball is
falling towards the ground? - ....ANSWER...the change in
position between the ball and earth in the gravitational
field. When position changes the force changes and when
the force changes potential energy changes.
A ball is falling down, what causes it to fall down? -
....ANSWER...the gravitational interaction between the
earth and the ball
As the ball moves towards the ground what happens to the
total energy of the system? - ....ANSWER...it stays the
same because energy isn't being created or destroyed and no
energy can be transferred into the system
,energy can be... - ....ANSWER...transferred or transformed
Transferred energy - ....ANSWER...Energy can be
transferred from one object to another and the objects have
to interact
transformed energy - ....ANSWER...energy changed from
one form to another (potential energy turns into kinetic)
Newton's Cradle - ....ANSWER...-We can see energy
transfer and transform
-as the ball moves down PE turns into KE (transform)
-when one ball hits the other ball the energy is transferred
The temperature at which a solid changes to a liquid (of
the same chemical identity) is - ....ANSWER...the melting
point
noble gasses cannot - ....ANSWER...react with anything
besides elements of the same type (ex Helium can only react
with another Helium atom)
,liquid atoms have to be - ....ANSWER...touching in a
disorganized manner.. they shouldn't be all spread out
solids - ....ANSWER...molecules packed closely in definite
arrangements
volume and shape independent of container
incompressible
liquid - ....ANSWER...molecules move in relation to one
another
volume undefended of container
no fixed shape
incompressible
gas - ....ANSWER...molecules far apart, move with high
speed, collide
no fixed volume or shape
compressible
, to have solids and liquids... - ....ANSWER...atoms must
stick together
As two unlike atoms move closer together what happens to
the PE? - ....ANSWER...it decreases
What happens to PE the farther apart two unlike atoms
are from each other? - ....ANSWER...it increases
When two charges attract what happens to PE -
....ANSWER...it decreases because the charges are moving
with the force
when two charges repel what happens to PE -
....ANSWER...it increases because the charges are moving
against the force
Think of the electron cloud as - ....ANSWER...fluffy;
electron cloud can move side to side which causes it to
fluctuate momentarily so that the electron density is
distorted