unit for force
newtons _________ law states for every action there is an equal and opposite reaction.
newtons __________ law explains the relationship between force, mass, and acceleration in the equation F=ma
newtons ________law states an object in motion will stay in motion, an object at rest will stay at rest until an outside force acts on it
unit for power
material that does not let heat or electrical current flow through it easily
material that does allow heat or an electrical current flow through it easily
atoms become charged by gaining or loosing an (blank)
electrical _______ is the flow of charged particles. (Fill in the blank.)
the law of conservation of (blank) states charges cannot be created or destroyed, only transferred
a closed loop in which an electrical current can flow
work done per unit time, or the rate in which electrical energy is converted to another form
the high point on a wave
a rhythmic disturbance that carries energy through space and matter
maximum displacement from a waves position of rest
a closed loop through which electrons can flow
a kilowatt-___________ is a measure of energy consumption. Used by power companies to charge people for the energy they use. (Fill in the blank.)
a temporary magnet created by running a current through a coil of wire.
Sound cannot travel through a _________.(Fill in the blank.)
The source of all waves is a ____.(Fill in the blank.)
The time it takes for a pendulum to swing back and forth once is called:
A wave carries___________.(Fill in the blank.)
What type of wave also has movement at right angles to the direction of the wave?
The result of vibrating an object at it own natural frequency.
Which waves are capable of cancelling each other (undergoing interference)?
The word that is equivalent to the frequency of a sound wave.
The wavelength of a longitudinal wave is the distance between ________.(Fill in the blank.)
A perceived change in wave frequency because the wave source is moving is called:
A battery produces ___ current and a generator produces ___ current.(Fill in the blanks.)
In a _________ circuit one light bulb going out causes the rest to go out. (Fill in the blank.)
The ________ is the positive part of the atom and the _____ are the negative particles. (Fill in the blanks.)
metals are good conductors because they have:
Rubbing a balloon with a wool cloth is an example of charging by :
electrical current can be induced in a wire by placing it in a moving ____________(Fill in the blank.)
This device takes mechanical input (energy) and transforms it into electrical output (energy).
batteries , generators
two kinds of electric pumps (voltage sources) are:
thickness, length, temperature
The three things that affect the conductivity of a wire are:
If the voltage in a circuit remains constant, while the resistance increases, what happens to the current? I= V/R
If the resistance in a circuit remains constant, while the voltage increases to double its former value, what happens to the current? I= V/R
Your home electric wiring is a ___ circuit.
A circuit breaker (or fuse) is wire in __________in your house. (Fill in the blank.)
A moving electric field creates a ___ field.(Fill in the blank.)
Bending of light = _______.(Fill in the blank.)
Angle in = angle out is the law of _______.(Fill in the blank.)
U.V. and infrared. Which has the shortest wavelength?
The color of visible light at the shortest wavelength.
The speed of light in glass compared to a vacuum is_______(slower or faster)
red, green, blue
The three primary colors of light are:
One side of a light wave slowing first when going into glass causes ___.
This kind of lens can be used to start fires. It is thickest in the middle and brings parallel rays of light together.
When light shines on a black object it _____it.
Which wave type in the Electromagnetic spectrum has the longest wavelength?
Which wave type in the Electromagnetic spectrum has the highest frequency?
Which wave type in the Electromagnetic spectrum has the highest energy?
A push or a pull
a force that attracts all objects to each other
law of Universal Gravitation
every object in the universe attracts every other object. The strength of the force and gravity is dependent on 2 factors: the masses of the objects and the distance between them
amount of matter in an object
the force of gravity on an object
the tendency of an object to resist a change in motion
the release of nuclear radiation in the form of particles and waves from radioactive elements
can be blocked by a piece of paper
can be blocked by aluminum
can pass through lead
same number of protons but a different number of neutrons
when the nucleus gives off particles or waves to become lighter and more stable.
mass number decreases by 4, protons decrease by 2
mass number stays the same, proton number increases by 1
period of time it takes for a radioactive element to decay
two smaller nuclei join together to form a larger nucleus
more energy than fission
the sun is an example of this
a large nucleus is split into two smaller nuclei
the atomic bomb and nuclear power plants are examples of these