Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
27 Cards in this Set
- Front
- Back
|
magnetism
|
properties and interaction of magnets
|
|
|
interaction__________ ____ ______the magnets are?
|
increase the closer the magnets are
|
|
|
magnets have____ ?
|
two poles
|
|
|
opposite ends?
|
attract one another
|
|
|
like ends
|
repel one another
|
|
|
magnetic field
|
field that surrounds a magnet that exerts a force on other magnets
|
|
|
magnetic fields are represented by _______?
|
lines
|
|
|
earth is made up of?
|
a magnetic field
|
|
|
a compass is????
|
a magnet
|
|
|
magnetic domains?
|
group of atoms with aligned magnetic poles
|
|
|
nails are_________________ magnets?
|
temporary
|
|
|
current-carrying wire is called a____________?
|
solenoid
|
|
|
the magnet can be turned ______ and _______ by stopping the flow of electrical current
|
on,off
|
|
|
poles ________?
|
switch
|
|
|
electromagnet is?
|
a temporary magnet made by wrapping a current carrying wire around an iron core
|
|
|
electricmotor is?
|
device that changes electrical energy into mechanical energy
|
|
|
more current =
|
more speed
|
|
|
turbine is?
|
wheel that rotates when pushed by water,steam, or wind
|
|
|
generator is?
|
uses electromagnetic induction to transform mechanical energy to electrical energy
|
|
|
what does a commutator do?
|
acts as a reversing switch that rotates the electromagnet
|
|
|
brushes acts as?
|
a conductor between battery and coil
|
|
|
electromagnet induction
|
generation of electrical current by changing a magnetic field
|
|
|
high voltage____ ____ enter your_____?
|
can, not, home
|
|
|
a generator works _______________ than of an electrical motor
|
opposite
|
|
|
direct current flows?
|
in one direction in a wire
|
|
|
alternating current ___________ the direction of the current in a regular pattern
|
reverses
|
|
|
transformer is a _____________that___________ or decreases the _____________ of the ac from the power plant
|
devise, increases, voltage
|
