definition
Transfer of heat by direct contact.
Heated atoms and molecules collide with
cooler molecules and transfer their
kinetic energy.
Conduction
Particles that make up matter are in CONSTANT motion.
true
that energy cannot be
created or destroyed.
The law of conservation of energy
Anything that causes change
energy
a device that makes
work easier by changing the size
or direction of a force.
a machine
Transferring heat in liquids and gases by
the mass movement of molecules. Hot
rises and cold sinks forming convection
currents.
Convection
The faster particles move the LESS kinetic energy they have.
false more
is the sum of the
kinetic energy and potential energy of the objects in a system.
Mechanical energy
energy in the form of motion.
kinetic energy
Simple Machines put together
in different
ways
complex machine
Transfer of heat by electromagnetic
waves. Does not require matter to be
transferred
Radiation
The thermal energy of an object is the TOTAL energy
of the particles in a material.
true
when an object moves in a curved path.
Projectile motion
the energy that is stored in the interactions between objects.
potential energy
property of a moving object that
equals its mass times its velocity
momentum
something that prevents heat from moving from one place to another
thermal insulator
Heat is measured in NEWTONS.
false newtons
the energy stored in an object as the result of its vertical position or height.
gravitational potential energy
The energy stored in foods and fuels
chemical potential energy.
Objects in motion stay in motion and objects
at rest stay at rest until acted upon by an
unbalanced force.
Law of inertia/ newtons 1st law
materials through which
heat flows quickly.
conductor
When temperature INCREASES , the average kinetic energy of the particles decreases.
false decreases
How are energy and
power related?
power is the rate at which energy is transferred
The joule is a unit used to measure
energy
For every action there is an equal and
opposite reaction.
newtons 3rd law