Energy
potential energy of an object elevated above the ground
gravitational potential energy
transfer of heat through collisions of particles
Unit of measurement of energy
Joules (J)
if a sound is loud, does it have a bigger amplitude or wavelength?
amplitude
if you can see all the light coming through a medium, what type of material is it?
transparent
energy possessed by objects that are moving
kinetic energy
transfer of heat through the flow of particles
convection
a measure of an object's ability to provide useful energy
energy efficiency
if a sound is high in pitch, does it have a smaller amplitude or wavelength?
wavelength
what is it called when light bounces off a surface?
reflection
energy stored by an object that is stretched or squashed
elastic potential energy
heat transfer that does not require the movement of particles
radiation
law that states that energy cannot be created or destroyed
Law of Conservation of Energy
what kind of waves does sound travel in?
longitudinal waves
what is it called when light bends/changes direction after going from one medium to another?
refraction
energy that causes objects to gain temperature (particles gain energy)
heat/thermal energy
identify the types of materials involved in each type of heat transfer (conduction, convection, radiation)
solids, liquids and gases, electromagnetic radiation
A machine is 80% efficient.
Is 20% useful or wasted?
what is it called when sound particles are spread out in the air after being compressed?
rarefaction
how many types of electromagnetic waves are there in the electromagnetic spectrum?
6 (+ visible light)
energy released from the movement of charged particles
electrical potential energy
where is the most effective place to put a marshmallow when roasting it over a fire?
A machine is 75% efficient.
If it gets 200 J input, how much is useful?
150J
what are the names of the three bones in the middle ear?
ossicles (hammer, anvil, stirrups)
what is the angle that light hits an object at called?
angle of incidence