Transcript What is work?

This is
Work, Power,
Machines & Energy
JEOPARDY
It’s
Time
To
Work
Power
Simple
Machines
Forms of
Energy
Levers
Assorted
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The work done on an
object is this type of
quantity because
technically it has
magnitude but not a
specific direction.
A 100
What is a scalar
quantity?
A 100
It acts on an object to
displace it during
work.
A 200
What is a force?
A 200
When negative work is done,
the force acts on an object in
the opposite direction to this.
A 300
What is the object’s
displacement?
A 300
This force does negative
work on a filled cardboard
box as you try to push it
across the floor.
A 400
What is friction?
A 400
This component of the
force on the object actually
does the work.
A 500
The horizontal
component of the
force.
A 500
Power is the rate at
which this is done.
B 100
What is work?
B 100
The unit of power.
B 200
What is a watt?
B 200
A watt is equivalent to
this how many of these
per second.
B 300
What is a Joule?
B 300
A motor’s power is calculated
as the product of its velocity
and the amount of this it
produces.
B 400
What is force?
B 400
This scientist/inventor of a steam
engine, tested a strong horse to
determine its power was 550
foot-pounds per second.
B 500
Who was James Watt?
B 500
A simple machine is able to
do work in this number of
movements.
C 100
What is one?
C 100
A ramp is an example
of this kind of simple
machine.
C 200
What is an inclined plane?
C 200
This simple machine is
produced by wrapping a long
inclined place around a shaft.
C 300
What is a screw?
C 300
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C 400
Simple machines can make
work easier by multiplying
the effort force and by
changing this.
C 400
What is the direction of
the force?
C 400
With regards to the amount of
work done, machines can
never do this.
C 500
What is reduce the
amount?
C 500
Energy may be defined as the
ability to do this.
D 100
What is work?
D 100
Energy is equivalent to this
which occurs when a force is
applied to an object to
displace it.
D 200
What is work?
D 200
The scientific law that states
Energy cannot be created or
destroyed in a closed system.
D 300
The law of
conservation of energy
D 300
This type of energy source
cannot be replaced within a
lifetime.
D 400
What is
nonrenewable?
D 400
These are two examples
of nonmechanical energy.
D 500
What are: Chemical,
Radiant, Electrical etc.
D 500
A lever is this type of
machine.
E 100
What is Simple?
E 100
A support on which a lever
can pivot.
E 200
What is a fulcrum?
E 200
A pry bar is an example
of this class of lever.
E 300
What is a first-class lever?
E 300
A broom is an example
of this class of lever
E 400
What is a third-class lever?
E 400
These are the two names used
to describe the lever arms on
either side of a first class
lever’s fulcrum.
E 500
What are the effort
and resistance arms?
E 500
The energy of motion.
F 100
What is kinetic energy?
F 100
Type of potential energy
related to an object’s
height.
F 200
What is gravitational
potential energy?
F 200
This aspect of a “real”
machine is related to the
number of times a machine
multiples the effort force.
F 300
What is the Mechanical
Advantage (MA) of that
machine?
F 300
This is always missing
from the operation of an
“Ideal Machine.”
F 400
What is Friction?
F 400
The class of lever in which
the resistance is placed
between the fulcrum and the
effort force.
F 500
What is a secondclass lever?
F 500
The Final Jeopardy Category is:
Simple Machines
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This simple machine is most like
a first class lever.
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What is a pulley?
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Machines and Energy
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