Download 3rd Six Weeks Review

Force, Motion, and Speed Unit Guide
What is force?
a)
b)example:
What are balanced
forces?
Give an example.
a)
What are unbalanced
forces?
Give 2 examples.
a)
b)example:
b) examples:
How does mass effect
force?
What are 3 things that
can happen when an
object is affected by
force?
How is force
affected when a
simple machine
is used?
What is a pulley and
why is it used?
a)
b)
c)
a)
b) example:
a)
b) examples:
c) Illustrate:
What is an inclined
plane and why is it
used?
Give an example of an
object continually
changing
(transforming) from
kinetic to potential
energy.
Give an example of an
object gaining
potential energy.
What is motion?
a)
b)example:
Explain this statement: “An
object at rest stays at rest
and an object in motion
stays in motion unless
acted upon by an outside
force.”
Explain how to
calculate speed.
Give an example.
How do you calculate
average speed from a
graph?
Explain what a graph
would look like for a
car in constant motion.
Explain what a graph
would look like of a
student walking at
different speeds.
Describe 3 ways you
can tell the motion of
an object is changing
by looking at a motion
line graph.
Describe two types of
constant motion that
can be represented on
a motion graph.
What does the slope of
the line in a speed
graph tell?
What does a horizontal
straight line in a speed
graph tell?
What equipment would
you need to measure
the speed of a runner?
Why?
a)
b)example:
a)
b) example:
a)
b) example:
a)
b)
c)
a)
b)
a)
b)
In your spiral define the following words for a spiral check on test day!!!!
Frayer Model for: balanced force, unbalanced force, motion, potential energy, kinetic energy, inclined plane,
pulley, speed, inertia, velocity, acceleration, deceleration
Force, Motion, and Speed Study Guide ANSWERS
What is force?
What are balanced
forces?
Give an example.
What are unbalanced
forces?
Give 2 examples.
a) a push or a pull exerted on an object
b)examples: gravity, a boy pulling a wagon
a) are balanced on all sides and do not change the
object’s motion or position
b)example: pushing on both sides of
a toy car
a) When forces are not balanced on all sides of an
object. Unbalanced forces change the position of an
object and
b) examples: winning a tug-of-war game,
someone pushing another person over
How does mass effect
force?
What are 3 things that
can happen when an
object is affected by
force?
How is force
affected when a
simple machine
is used?
The greater the mass of an object, the greater the
object's force
What is a pulley and
why is it used?
a) A pulley system changes the direction of the force
a) speed up
b) slow down
c) change direction
a) It increases the force that we apply to a task.
b) example: we pull down on a pulley and this makes
the object easier to lift (uses less effort on our part)
we apply. Rather than pulling up, we pull down. This
makes it easier to lift an object.
b) examples: A pulley helps us lift objects – raising a
flag on a flag pole, raising or lowering window blinds,
construction crane
c) Illustrate:
What is an inclined
plane and why is it
used?
An inclined plane is a slanted surface used to raise an
object. When an object is moved up an inclined plane,
a) What is potential
energy?
b) Give 3 examples
less effort is needed than if you were to lift it straight
up, but, you must move the object over a greater
distance. Example: ramp
a) Energy of position
b) stretched rubber band
stacked dominoes
charged battery
a) What is kinetic
energy?
b) Give 3 examples.
a) energy of motion
b) flying rubber band
Give an example of an
object continually
changing
(transforming) from
kinetic to potential
energy.
Give an example of an
object gaining
potential energy.
What is motion?
Roller coaster – potential at the top of the hills and kinetic
going down the hills
falling dominoes
driving a car
Stretching a rubber band
A roller coaster getting to the top of the highest hill.
a) the change in location of an object
b)example:
Explain this statement:
“An object at rest stays
at rest and an object in
motion stays in motion
unless acted upon by
an outside force.”
Explain how to
calculate speed.
Give an example.
How do you calculate
average speed from a
graph?
Explain what a graph
would look like for a
car in constant motion.
a car going down the street
It means that a object will stay in the same place unless
a force moves it OR an object will keep moving unless a
force stops it (or slows it down)
Example – wear your seat belt to become “part of the
car” so you’ll stop when it stops.
a) speed = distance traveled divided by time passed
b)example: A car moving 60 meters in one hour = 60m
divided by 1 hour = 60mph (meters per hour)
Average speed = total distance traveled divided by
total time traveled.
a) The motion of the car would be shown by a
straight line.
b) example:
Explain what a graph
would look like of a
student walking at
different speeds.
Describe 3 ways you
can tell the motion of
an object is changing
by looking at a motion
line graph.
Describe two types of
constant motion that
can be represented on
a motion graph.
Write a “speed
calculation” question.
What does the slope of
the line in a speed
graph tell?
What does a horizontal
straight line in a speed
graph tell?
What equipment would
you need to measure
the speed of a runner?
Why?
a) 2 or more straight lines at different slopes.
b) example:
a) the line turns left
b) the line turns right
c) the object stops and the line goes “flat” or parallel to
the x axis.
a) a straight line going “up,” a straight line going “down,”
b) or a straight line running parallel to the x axis
How fast is an airplane traveling it is moves 500 meters in
2 hours? 500/2 = 250 mph
The steeper the slope is rising, the faster the motion. A
flat line means zero motion.
The object is not moving.
a) Metric tape measure and Stop watch.
b) Speed is determined by measuring distance traveled
over time so you need the tape measure to measure the
distance and the stop watch to measure the time.