science is bad test Flashcards
whats a magnetic domain
an area where magntetic feilds of atoms are grouped together and alinged
what is static electricity
when there is a unbalanced number of negative and positive charges
what is current electricity
the flow of electricity in an electrical circut
whats an electrical circut
a path that closed where electrons flow
whats voltage
an electric push
current is measured in
amps
what are alternitiave sources of energy
hydroelectric energy, solar energy, geothermal energy, wind energy, nuclear energy, and biomass energy
what did Ben Franklin prove
the connection between electricty and lighting
how did edison invent the light bulb
he expiremented and created the electrical batter then he connected it to carbon using wires
what is matter made of
protons neutrons and electrons aka an antom
what are parts and charges if an atom
a positively charged nucleus, surrounded by one or more negatively charged particles called electrons
how do electrons stay i orbits
they have electric attraction to the nucleus
how do atoms become positive and negitive
when one or more lectron is stripped away it becomes postive if one or more electron is add3d it becom es negitive
when is an atom neutrul
when it has an equal number of electrons and protons.
what makes matter an insulater
the atoms have tightly bound electrons
what causes matter to be a conducter
many free electrons
how are electrical charges like a magnet
Their movement generates an electric current and causes each electron to act like a microscopic magnet.
why do balloons stick to the wall
because of the electric static between them
why would cloud want to discharge electricity throught lighting
water droplets and crystal rub together making electric static
why is ditstalled water not a good conducter
it doesnt have as much dissolved ions as salt water
increasing the number of batteries in a circuit increase
voltage and current
decreasing the size of the circut will
get more voltage to the device
describe the weird behivor of H20
H2o moves farther and slower when frozen apaprt unlike everythnig else that moves closer and faster
fan cart questions
converted to electrical energy
