Waves
what is a wave?
a disturbance that carries energy from one location to another location.
what is electric charge
Objects become positively charged when they lose electrons and negatively charged when they gain electrons; objects with like charges repel and objects with opposite charges attract
what is kinetic energy
is the energy of motion.
what is energy
means the ability to do work.
A force is a push or pull on an object.
what must waves have to travel?
energy
describe a electric circuits
An electric circuit allows electrons to flow from a negative pole (excess electrons) to a positive pole (deficient in electrons)
solid liquid and gas
what is potential energy
is stored energy due to an object’s position--energy ready to go.
what is velocity?
Velocity is speed and direction.
A constant velocity indicates that an
object is moving in a straight line at a
constant speed.
what are 2 diffrent types of waves?
Transverse waves and Longitudinal waves
connections in a circuit
Electrons flow from negative to positive; therefore, a complete circuit must have wires that connect the negative pole of the energy source to the positive pole of the energy source.
The circuit is established when there is a continuous path for electricity to travel from one end of the energy source to the other end.
what is plasma
is a state of matter that starts out as a
gas and becomes ionized.
what is Elastic Potential Energy
is the energy stored in elastic materials as the result of their stretching or compressing.
what is law of inertia?
Newton’s first law of motion is often
called the Law of Inertia.
Inertia is the tendency of all objects to
resist any change in motion.
name the waves behaviors
reflection, refraction, diffraction, absorption, and scattering
what is a voltage?
is the potential difference between two points in a circuit.
what are gas particles
Gas particles move freely in all directions,
except during occasional collisions.
what is gravitational potential energy.
Potential energy that is related to an object's height above the ground
2 examples of inertia
Ex. 1: Hitting the brakes and you still
move forward.
Ex. 2: A car suddenly makes a sharp
turn and you slide to the side.
what is polarization
is when a wave moves in one particular direction. Light waves are often polarized using a polarizing filter. Only transverse waves can be polarized.
what is resistance
is how difficult it is for electrons to flow through a material (friction).
examples of gas liquid solid
Mechanical
Chemical
Nuclear
Solar
Thermal (Heat)
Electrical
Sound
exlain net force
The combination of all the forces
acting on an object is the Net Force.
When more than one force is acting on
an object, the net force determines
the motion of the object.