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the study gide for my science test on tuesday, november 10

What is the definition of energy? to move an object
what is potential energy? when something has the potental to move when energy is there but no being used
what is kinetic energy? when something is in movement and using energy
Give an example of kinetic and potential energy kinetic: when a ball is thrown Potential: when a ball is held in your hand
what are 5 types of energy? gravitational thermal electromagnetic mechanical chemical
energy can change forms but not me lost give an example. automobile fuel = chemical -> mechanical done through heat oil = chemical -> thermal, nuclear
what is a conductor? something that allows electricity to flow through it
what is the opposite of a conductor or something that does not let electricity flow though it? insulator
who was Alessandro Volta? he came up with the first battery using zinc and silver.
what is the flow of electricity called and electric current
What is AC? AC stands for alternating current. when electrons move back and fourth at a fast pace.
what is DC? stands for direct current. when electrons only travel in one direction.
What is a series circuit? when only one path is available for the electricity to travel
what is a parallel circuit? when more than one path is available for the electricity to travel.
why do you get shocked if you stick your finger in an electric socket? because there is an electric current and you are a conductor.
what is a complex circuit? something made up of series and parallel circuits.
what is a switch? a device to break a circuit
what is a volt? a unit for measuring the rate of electron flow in a circuit
electric charge having too many or too few electrons
battery a temporary source of electricity
power the rate at which a device converts electrical energy to another form of energy
circut the path of electric conductors
static electricity electric charge built up in one place
electroscope device that detects electric charges
resistance opposition to the flow of electricity
ampere unit to measure electric potential
what are the three main parts of an atom? protons neutrons electrons
what is electricity? the flow of electrons from one atom to another
what is a circuit? the path of electricity in a circle opened by a switch
what happens to molecules as heat is added and taken away? when they are heated up the move faster and when they are cooled down they slow down.
what are the two main properties of magnets? what its attracting has to contain iron always point north and south
paramagnetic things we don't think about being attracted by magnets
ferromagnetic things that we know are attracted by magnets
diamagnetic repelled by magnets
what is a switch? can stop the flow of energy from a source to a load/resistance
what type of current does a battery represent DC->current that only flows in one direction
can you demagnetize a magnet? yes if you throw in on the ground hard enough heat it up
what is the name of the area around a magnet? magnetic field
how did the magnet get its named a Greek city named magnesia named magnetite after city
what are the degrees of magnetism diamagnetc paramagnetic ferromagnetic
what happens when you break a magnet? you get two smaller magnets?
what is the measure of heat? temperature
what are the three temperature scales Kelvin Fahrenheit Celsius
what is electricity the flow and movement of electrons
absolute zero as nothing colder on kelvin scale
absolute zero -> in Celsius and Fahrenheit -273 C -513 F
what two parts of an atom are in the nucleus? protons and neutrons electrons on outside
what is the charge of each of the parts of an atom protons - + positive neutrons - +- neutral electrons - -negative
Opposites attract in magnets poles attract N-S
opposites in electricity electrons and protons stick together to cancel each other out
study pictures of iron shavings on magnet patterns SS--> there is a circle of no iorn shavings where the S and S side are together ONE--> There is lines in a circle around the center showing the magnetic force field NS--> there is a big cluster of iorn shavings where the N and S side are facing eachothe
three methods of heat transfers conduction radiation convection
conduction movement of heat through a solid
convection movement of heat through a liquid and a gas
radiation heat waves from the sun or solar energy
Freezing point When something turns into a solid
boiling point when something turns into a gas
condensing point opposite of a boiling point
melting point opposite of a freezing point
magnetic force a push or pull exerted by a magnet
how are atoms of ferromagnetic substances different from the atoms of other substances? their atoms choose domains (North + South) and organize in alternating groups
what is heat? energy created by movement of molecules
what are the freezing and heating points of Fahrenheit? freezing - 32 degrees boiling - 212
what are the freezing and boiling points of Celsius Freezing - 0 degrees Boiling - 100 Degrees
what are the freezing and boiling points of Kelvin? Boiling - 373 degrees Freezing - 273 degrees
Created by: IntoTheShadows