Transcript Science Vocabulary Bingo Ch. 2 Forces & Ch. 3 Forces in Fluids

Science Vocabulary Bingo
Ch. 10 Forces
 A _______ ______ is a place or object
used for comparison to determine if
something is in motion.
 An object is in motion if it changes
position relative to a ________ _____.
=reference point
 Mass x Velocity = __________
 Newton called it “a quantity of motion”
=Momentum
An ________ _________ can
cause an objects velocity to change…
When the net force on the object
is NOT zero
Unbalanced Force
 ________ is speed in a given direction.
The car was traveling 75 mph North on the
405 freeway.
=Velocity
 An object at rest will stay at rest, an
object in motion will stay in motion.
This law of motion can be summed
up in one word…
 Inertia
 In general, the force that two surfaces
exert on each other when they rub
against each other.
 Smooth surfaces produce less _____
than rough surfaces.
 =Friction
 The force that pulls all falling objects
toward earth…
 gravity
 When Matter returns to its original shape
after it is squeezed or stretched…..
 Waist band
 Sponge
=Elastic Force
 If the vehicle goes 0 – 100 mph in 5
seconds, find the vehicles acceleration.
 20 mph/sec
 Friction that occurs when an object
rolls over a surface
 Ex. Tires on a road
 Rolling friction
Equal forces acting on an object in
opposite directions, and does not
cause motion…
Balanced forces
 For every action there is an equal and
opposite reaction
 =Newtons 3rd Law of Motion
 Any force that causes an object to
move in a circle.
Ex: a Satelite around earth
A roller coaster
Centripetal force
 Graph
 Speed stays the same every second.
=Constant speed
 The rate at which velocity changes…
 Examples: speeding up, slowing down or
changing direction
=Acceleration
 This is an object that orbits the
earth. An object that travels around
another object in space is called…
 Satellite
A push or a pull is a …
And it has both direction and
magnitude
=force
 ________ __ ____ _______
states that the force of gravity acts
between all objects in the universe.
Universal Law of Gravitation
 A bicyclist travels 50 km in 2 hrs. What is
the bicyclists average speed?
50km/2hrs
=25 km/hr
 When all forces acting on an object
are added together its called the
______ _______.
Net Force
 The energy an object has due to its
motion is called ________ ______.
=Kinetic Energy
 Fluid friction experienced by objects
flying threw air..
 Ex. a leaf or a piece of paper
 Air restance
 This law states that the momentum of
any group of objects remains the same,
or is conserved, unless outside forces act
on the objects. (friction is an example of
an outside force)
 The law of conservation of momentum
 A measure of the force of gravity on
an object…
 weight
 A mouse is traveling at a velocity of 10
m/s west and its mass is 25 kg what is its
momentum?
 250 kg x m/s
 Total Distance /Total Time =
=Average Speed
 The amount of matter in an object…
 This measurement stays the same
no matter where an object is…
 (on earth or the moon for example)
 mass
 An object that is thrown is called a…
 projectile
 When the only force acting on a
falling object is gravity, the object is
said to be…
 Free falling
 For every action force there is an
equal and opposite ______ ______.
 Reaction force
 When measuring force, the units
used are kg x m/s sq. or ______.
 Newtons
 (N)
 What formula is used to calculate
force…
Force = ________
Mass X Acceleration
 Friction that occurs when one solid
surface slides over another…
 Sliding friction
 Mass, Acceleration and Force are all
related. If one of those components
changes, it will affect the others.
 Ex. …
 Newtons 2nd Law
 Free falling objects accelerate at
what rate due to the pull of gravity?
 9.8 m/s squared
 What was the velocity of the plane that
traveled 1000 miles in 5 hours east?
 200 mph east
 An object weighs 50 pounds and is
accelerating at 10 m/s. What is the force
on the object?
 500 N
 Stored energy that results from the
position or shape of an object is called
_________ ______.
=Potential Energy
 The maximum velocity a falling object
can achieve…
 Terminal Velocity
 Air resistance is an example of...
 Fluid Friction