7/28/2019 Student Answer Sheet Physics Review
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Physics Review
Pre-Test Post-Test1. 4. 7. 1. 4. 7.2. 5. 8. 2. 5. 8.3. 6. 9. 3.
6. 9.
10.
Questions: Day 1I. What is Energy?
The ability of an object to produce a ___________ in itself or
its environment It is a measure of the capacity to produce
change.
Sometimes ___________ is associated with change Work
_____________ energy, but energy can also be transferred by
________
and _____________. II. Can Energy be Created?
Law of Conservation of Energy - Energy ______________ be created
or destroyed Total amount of energy is constant Energy can only be
_________ or _______________.
What is the earths primary energy source? ___________ The sun
releases the energy stored in atoms through _____________ Fusion
combines the atoms of an element to create a different element
Energy is transferred to earth by _____________ (INSOLATION)
Electromagnetic waves like light ____________ frequency higher
__________
The sun _______________________________________________________
How else can energy transfer?
___________ transfers energy Work is a Force that causes
displacement (moves an object a distance) W=Fxd Whenever work is
done there is ____________
Friction always __________ motion and causes energy ____to the
environment How else can energy transfer?
_________ also transfers energy Heat is energy transferred
between objects at different temperatures
Higher temp faster atoms ------ Lower temp slower atoms The
random motion of atoms is ______________ Energy
Thermal Energy Virtually every energy transfer involves friction
and temperature differences Some energy is always lost to the
_______________ as _____________ energy We try to counteract this
by designing more efficient devices
How is energy stored? ____________ energy is the energy stored
in the ___________ of objects
Any object in motion has stored energy KE = mass x velocity
2
KE energy increases greatly with __________ Thermal Energy is
just energy stored in the kinetic energy of atoms
____________ energy is energy _________ because of an objects
_____________ Examples
If you stretch a rubber band, it has more energy than its
starting position An object at a high position has more energy than
same object at a low position An electron in a higher orbit has
more energy than it did in a lower orbit
____________ and _______________ are also forms of potential
energy
7/28/2019 Student Answer Sheet Physics Review
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Physics Review
Day 2Force and MotionRolling Ball Grand Prix
1. Describe the balls motion in the no touch zone.
_____________________________________2. What does the ball do in
the corners or around the loop if you dont push it?
_______________3. What can you say in general about the motion of
an object that has no force? _____________
______________________________________________________________________________
This is basically Newtons 1 st Law of Motion
An object at ______ tends to _______ at rest and an object in
___________ tends to _________ inmotion with the same speed and in
the same direction unless acted upon by an _________________
force This is also called the _________________
Inertia is an objects _______________ to a _____________ in
motion Mass is a measure of inertia
4. How did you get the ball to speed up or slow down?
___________________________________5. How did you get the ball to
change direction? ________________________________________6. What
would you need to do differently if the ball was twice as large
(had twice the mass)? ____
______________________________________________________________________________
Force is any _______ or _______ on an object
To change the balls motion, you applied force Acceleration (a)
is the rate of _______________________
Velocity is an objects _________ and ______________ Force causes
acceleration which changes speed or direction
Mass measures inertia , or ___________________ ______ mass, less
__________________
This is the 2nd Law of Motion: Increase force increase
acceleration Increase mass decrease acceleration
7. Which of the following would require the least amount of
force, if applied to the same ball? ___8. What would happen if two
objects were racing on the same track and they collided?
_________
______________________________________________________________________________Force
- Net Force = sum of all force vectorsBalanced Forces No Net
Force
What happens?
_________________________________________________________________Unbalanced
Forces Net Force
What happens?
_________________________________________________________________
Types of forces:
___________ forces- forces that happen when two objects touch
(Ex. _________________,Tensional, Normal, Air Resistance, Applied
and Spring Forces)
_________ Forces- objects dont touch but they still push or pull
each other (Action-at-a-distance) (Ex. ____________________,
Electrical and Magnetic Forces)
Gravitational Force Any object with mass creates gravitational
force ______ mass, more __________ The ____________the object, the
_________ the force The force decreases rapidly
as distance increases. Electrical force and magnetism are the
same as gravity in varying with distance
(N) NewtonsinmeasuredisForce
m
F aor
mass
Forceon Accelerati
