Celsius
What is energy?
The ability to do work p264
Explain how gravitational potential energy works
Gravitational potential energy is based upon the object's position above the Earth. The farther away the object is the more GPE they have p269
this is energy associated with moving charged particles
electrical energy p 276
this happens when nuclei of smaller atoms are combined or fused together to form a larger atom
nuclear fusion p278
what is a machine's job
to make work easier to do p 286
This is the energy of motion
What is kinetic energy p264
Name 5 things that have elastic potential energy
harp, springs, rubberband, bow, wind up toys, bouncing balls, etc
a form of energy that is reflected or emitted from objects and travels through space in the form of waves
electromagnetic energy p277
what is the law of conservation of energy
energy cannot be created or destroyed; it can only be converted from one form to another or transferred from one object to another p278
in what ways does a machine make work easier?
changes the size of a force,
changes the direction of a force or the distance over which a force is applied p286
1/2 x m x v2
p265
This is kinetic and potential energy added together
Mechanical energy p 274
what are 2 other names for electromagnetic energy?
radiant and light p277
the product of a force (applied in the direction of motion of an object) and the distance the object moves
work p 281
name 6 simple machines
inclined plane, wedge, pulley, wheel and axle, lever, and screw
t/f Kinetic energy is transferred when one object touches another
True p267
this is the total kinetic energy of the moving atoms and molecules in an object
thermal energy p275
this type of energy cannot travel through empty space
sound energy p 277
does a force that is not acting in the direction the object is moving complete work on the object
no p 282
this is an inclined plane wrapped around a cylinder or cone
screw p 290
Do objects not in motion have energy? if so, what is it called?
they do, potential energy p268
This is stored in the bonds of the molecules that make up a substance
chemical energy p276
a process that releases energy by splitting atomic nuclei apart
nuclear fission p277
the amount of work done each section
power p283
this simple machine uses a fulcrum
lever p 290