the study gide for my science test on tuesday, november 10
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is the definition of energy? | to move an object
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| what is potential energy? | when something has the potental to move
when energy is there but no being used
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| what is kinetic energy? | when something is in movement and using energy
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| Give an example of kinetic and potential energy | kinetic: when a ball is thrown
Potential: when a ball is held in your hand
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| what are 5 types of energy? | gravitational
thermal
electromagnetic
mechanical
chemical
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| energy can change forms but not me lost give an example. | automobile fuel = chemical -> mechanical
done through heat
oil = chemical -> thermal, nuclear
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| what is a conductor? | something that allows electricity to flow through it
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| what is the opposite of a conductor or something that does not let electricity flow though it? | insulator
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| who was Alessandro Volta? | he came up with the first battery using zinc and silver.
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| what is the flow of electricity called | and electric current
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| What is AC? | AC stands for alternating current. when electrons move back and fourth at a fast pace.
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| what is DC? | stands for direct current. when electrons only travel in one direction.
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| What is a series circuit? | when only one path is available for the electricity to travel
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| what is a parallel circuit? | when more than one path is available for the electricity to travel.
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| 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.
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| what is a complex circuit? | something made up of series and parallel circuits.
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| what is a switch? | a device to break a circuit
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| what is a volt? | a unit for measuring the rate of electron flow in a circuit
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| electric charge | having too many or too few electrons
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| battery | a temporary source of electricity
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| power | the rate at which a device converts electrical energy to another form of energy
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| circut | the path of electric conductors
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| static electricity | electric charge built up in one place
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| electroscope | device that detects electric charges
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| resistance | opposition to the flow of electricity
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| ampere | unit to measure electric potential
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| what are the three main parts of an atom? | protons
neutrons
electrons
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| what is electricity? | the flow of electrons from one atom to another
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| what is a circuit? | the path of electricity in a circle
opened by a switch
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| 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.
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| what are the two main properties of magnets? | what its attracting has to contain iron
always point north and south
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| paramagnetic | things we don't think about being attracted by magnets
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| ferromagnetic | things that we know are attracted by magnets
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| diamagnetic | repelled by magnets
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| what is a switch? | can stop the flow of energy from a source to a load/resistance
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| what type of current does a battery represent | DC->current that only flows in one direction
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| can you demagnetize a magnet? | yes if you throw in on the ground hard enough
heat it up
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| what is the name of the area around a magnet? | magnetic field
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| how did the magnet get its named | a Greek city named magnesia
named magnetite after city
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| what are the degrees of magnetism | diamagnetc
paramagnetic
ferromagnetic
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| what happens when you break a magnet? | you get two smaller magnets?
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| what is the measure of heat? | temperature
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| what are the three temperature scales | Kelvin
Fahrenheit
Celsius
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| what is electricity | the flow and movement of electrons
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| absolute zero | as nothing colder on kelvin scale
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| absolute zero -> in Celsius and Fahrenheit | -273 C
-513 F
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| what two parts of an atom are in the nucleus? | protons and neutrons
electrons on outside
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| what is the charge of each of the parts of an atom | protons - + positive
neutrons - +- neutral
electrons - -negative
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| Opposites attract in magnets | poles attract
N-S
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| opposites in electricity | electrons and protons stick together to cancel each other out
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| 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
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| three methods of heat transfers | conduction
radiation
convection
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| conduction | movement of heat through a solid
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| convection | movement of heat through a liquid and a gas
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| radiation | heat waves from the sun or solar energy
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| Freezing point | When something turns into a solid
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| boiling point | when something turns into a gas
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| condensing point | opposite of a boiling point
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| melting point | opposite of a freezing point
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| magnetic force | a push or pull exerted by a magnet
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| how are atoms of ferromagnetic substances different from the atoms of other substances? | their atoms choose domains (North + South)
and organize in alternating groups
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| what is heat? | energy created by movement of molecules
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| what are the freezing and heating points of Fahrenheit? | freezing - 32 degrees
boiling - 212
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| what are the freezing and boiling points of Celsius | Freezing - 0 degrees
Boiling - 100 Degrees
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| what are the freezing and boiling points of Kelvin? | Boiling - 373 degrees
Freezing - 273 degrees
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IntoTheShadows
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