Force and Work:
Energy in Action Video Worksheet
Force and Work:
Energy in Action Video Worksheet
• In order for an object at
rest to move a force
must be applied.
•True
Force and Work:
Energy in Action Video Worksheet
•The more force
applied to an object
the _____ it will move.
•Faster
Force and Work:
Energy in Action Video Worksheet
• ___________ forces are at work
when objects come into contact
with each other.
•Mechanical
• Example:
• Cars and tires
• on the road.
Force and Work:
Energy in Action Video Worksheet
• Gravity is a good example
of a ___________ force,
because there is not direct
contact between objects.
•Field
Force and Work:
Energy in Action Video Worksheet
• The gravitation force between
two objects is proportional to the
_____ of the objects and
inversely related to the distance.
•Mass
Force and Work:
Energy in Action Video Worksheet
• Why do astronauts weigh less on
the moon than they do on Earth?
•Mass
•of the moon
is smaller.
Force and Work:
Energy in Action Video Worksheet
• Gravitational forces ________ as
the distance between objects
_________.
•Decrease
• Increase
Force and Work:
Energy in Action Video Worksheet
• Gravitational forces ________ as
the distance between objects
_________.
•Decrease
• Increase
Force and Work:
Energy in Action Video Worksheet
• Magnetic Force is an
example of a field force.
True or False
•True
Force and Work:
Energy in Action Video Worksheet
• Because electrical forces are so
closely related to magnetic force,
they are usually referred
together as ______ forces or
EMF.
•Electromagnetic
Force and Work:
Energy in Action Video Worksheet
• What happens when the flow of
electricity is reversed by an
electromagnet?
•Pole is
reversed.
Force and Work:
Energy in Action Video Worksheet
• What is a commutator?
•Switches
poles.
Force and Work:
Energy in Action Video Worksheet
• The strongest field force
is a nuclear force called
the _____ nuclear force.
•Strong
Force and Work:
Energy in Action Video Worksheet
• What four forces are considered to be
universal forces of nature?
•Strong
•Weak
•EMF
•Gravity
Force and Work:
Energy in Action Video Worksheet
•_____ is force per unit
area and is measured
in Pascals.
•Pressure
Force and Work:
Energy in Action Video Worksheet
• What does falling atmospheric
pressure mean?
•Warmer weather with
more humidity,
clouds and
precipitation.
(Storms)
Force and Work:
Energy in Action Video Worksheet
•______ = force
multiplied by a
distance.
•Work
Force and Work:
Energy in Action Video Worksheet
•Energy is defined
as the ability to do
work. True/False
•True
Force and Work:
Energy in Action Video Worksheet
•Whenever work is
done, ____ is
transferred.
•Energy
Force and Work:
Energy in Action Video Worksheet
• Explain the Law of
Conservation of Energy.
•Energy is neither
created or
destroyed, it is
transferred.
Force and Work:
Energy in Action Video Worksheet
•What are two basic
types of energy?
•Kinetic
•Potential
Force and Work:
Energy in Action Video Worksheet
•What are examples
of Kinetic Energy?
•Heat, Friction,
Movement
Force and Work:
Energy in Action Video Worksheet
• What are examples of
Potential Energy?
•Diver above a
pool.
•Coal
•Positional
Force and Work:
Energy in Action Video Worksheet
• Levers, Pulleys, Wheels &
Axles, inclined planes, and
wedges are all examples of
•Simple
•Machines
Force and Work:
Energy in Action Video Worksheet
•____________ are
made by combining
simple machines
•Compound
•Machines
Force and Work:
Energy in Action Video Worksheet
• Compound machines are
made by combining simple
machines
•Example
•Scissors,
•Bikes
Force and Work:
Energy in Action Video Worksheet
• A measure of how much
a machine changes a
force is called its
•Mechanical
•Advantage
Force and Work:
Energy in Action Video Worksheet
• The efficiency of a machine
is a measure of the amount
of work put out by a
machine compared to the
amount of work put into it.
True or False.
•True
Force and Work:
Energy in Action Video Worksheet
• A machine’s fuel ______
rating gives us an idea of
what percentage of the
fuel’s potential energy is
actually converted into
useful work by a machine.
•Efficiency
Force and Work:
Energy in Action Video Worksheet
• ____ is the amount of work
that can be done during a
given period of time and is
calculated by dividing work
by time. ______ = hp.
•Power
•Horsepower
Force and Work:
Energy in Action Video Worksheet
•____ is measured
in watts
•Power
Force and Work:
Energy in Action Video Worksheet
•1 horsepower =
watts, while a watt is
= to 1 joule per
•746
•Seconds.
Video Crossword
•Use your notes
–Review of Forces
–Complete the
Puzzle.