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Chapter 3
The Rock and Fossil
Record
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Speed in a given
direction is known
as
Velocity
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STEAL ONE!
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4
This is the unit for force
Newton
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STEAL TWO!
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MOTION
• An objects change in position over time is
known as
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The rate at which velocity changes over
time is known as:
Acceleration
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Combination of all the forces
acting on an object
Net Force
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LOSE A TURN
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This the distance an
object travels divided
by the time it takes to
travel that distance.
Speed
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A push or pull
Force
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?
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Balanced – 0N (not moving)
Unbalanced >0N (moving)
This is the difference
between balanced and
unbalanced forces.
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Force that opposes motion
___FRICTION_____
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GIVE
ONE!!!
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What is kinetic friction?
Friction in motion
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Gravitational force depends
on these 2 things:
Mass and Distance
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Choose one player
that’s NOT on your
team and put him or
her ON your team!!
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These are the 4 types of friction:
Rolling, Sliding
Static, Fluid
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What are 3 things you could use to
reduce the amount of friction?
Lubricants, rolling, smooth surface
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STEAL THREE!
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• When does the gravity between 2
objects increase?
Increase mass or decrease distance
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STEAL ONE!
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When does static friction occur?
When a force is applied but there is no
motion
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This is known as the force of
attraction between objects due
to their masses.
Gravity
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GIVE
ONE!!!
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27
What is the measure of the
gravitational force on an object?
Weight
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GIVE
ONE!!!
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How are mass and weight
different? (3 ways)
Units
Tool
Location
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Choose one player
that’s NOT on your
team and put him or
her ON your team!!
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The acceleration due to gravity is
equal to this variable.
9.8 m/s2
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GIVE
ONE!!!
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This is produced by the
vibrations of electrically charged
particles.
Light
Energy
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This is the energy that comes
from changes in the nucleus
of an atom
Nuclear
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GIVE
ONE!!!
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This is when an objects air resistance
is equal to its force of gravity.
Terminal Velocity
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GIVE TWO!!!
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This person believed that
the rate at which an object
falls does not depend on
its mass.
Galileo
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LOSE A TURN
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40
These are the 2 motions involved in
projectile motion.
Horizontal and Vertical
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Why do you have to aim above the
target when playing darts?
In projectile motion, gravity will
pull the object down.
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STEAL ONE!
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This is when free fall occurs.
Only the force of gravity is
acting on an object.
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In projectile motion, this
motion is constant.
Horizontal
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STEAL TWO!
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TRUE
Orbiting objects are in free
fall? True or false?
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GIVE
ONE!!!
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In projectile motion, why does
the object increase vertically?
Force of gravity
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Acceleration due to gravity on
Earth is __9.8 m/s2______
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GIVE
ONE!!!
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_____kinetic energy___ is the
energy of all motion.
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STEAL ONE!
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?
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______Galileo_____________ argued with
Aristotle's theory of gravity.
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?
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• Acceleration depends on force and
__mass____
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_________Mechanical Energy__is
the total of potential and kinetic
energy.
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LOSE A TURN
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As the speed of falling object
________increases__________ the
air resistance increases.
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STEAL TWO!
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________ENERGY______ is the
ability to do work.
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Air resistance depends on
shape,
size,
• Intrusions
are and
younger than the
_____speed______________
layers they cut across
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?
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The formula for Kinetic
Energy is
KE= mv2/2
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This is the constant velocity of a
falling object when the force of air
resistance is equal to the force of
gravity .
Terminal velocity
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Free fall can only occur
Space or??
vacuum
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GIVE
ONE!!!
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Plants change _____energy
into chemical energy.
Light
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LOSE A TURN
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Momentum is mass x _velocity_
??
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?
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The formula for gravitational
potential energy is
GPE= weight x height
OR
??
GPE = m x g x h
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In photosynthesis ___________
energy is used to make new
substances.
Light
??
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?
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In _____FISSION______
an atom is split into two
smaller nuclei.
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STEAL ONE!
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When you wind an elastic band
on a toy airplane it has
______________ energy.
Elastic Potential
?? energy
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is an
unbalanced force that
causes objects to travel
in a circular path
Centripetal force
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STEAL TWO!
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______________ is the curved
path an object follows when
thrown near the surface of
Earth.
Projectile??Motion
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LOSE A TURN
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The ____________________ states
that any time objects collide, the total
amount of momentum stays the same.
The law of conservation
of
??
momentum
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_____________ is the resistance
of an object to move.
Inertia
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STEAL ONE!
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Pushing off the wall of a swimming
pool will propel you backwards, this
is an example of Newton’s
____________ Law
3rd??
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GIVE
ONE!!!
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Whenever one force exerts a
force on a second object, the
second object exerts an equal
and
________opposite________
force on the first.
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Choose one player
that’s NOT on your
team and put him or
her ON your team!!
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90
This is a change
from one energy
form to another
Energy Conversion
??
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LOSE A TURN
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A moving car has
___kinetic_________
energy.
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STEAL ONE!
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An example of
a roller
??
mechanical energy is coaster, etc
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LOSE A TURN
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Your body uses chemical
energy in food to make
______potential_______
energy.
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Objects fall to Earth at the same
rate because the
______________ is the same
for all objects.
Acceleration due to gravity
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__Thermal Energy__
is all the energy due
to random motion of
particles that make
up an object.
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__Chemical__ is the
energy of a compound
that changes as its atoms
are rearranged.
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___Electrical__ is
the energy of
moving electrons.
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___sound energy_ is
caused by an
objects vibrations.
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