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20 Cards in this Set

  • Front
  • Back
An electromagnet needs an _________ to produce a magnetic field.
electric current
A __________ circuit has "more than one path for the current".
parallel
Electricity has "only one path in which to travel" in a _________ circuit.
series
If one bulb on a strand of Christmas lights burns out but the other bulbs stay lit, you know that the strand of lights is on a _________ circuit.
parallel
The base of a light bulb is made of metal because metal is a good ____________ of electricity.
conductor
Rubber is used as a covering for the wires of an electrical cord because rubber is an ___________.
insulator
__________ is a substance used to make most electrical wiring because it is known to be a good conductor of electricity. Pennies are also made of this substance.
copper
Sometimes in a closed circuit metal becomes hot and some of the thermal energy is transformed to the air as radiation. This produces _________ such as a filament inside a bulb.
light
The most noticable energy produced when you "plug in and turn on a lamp" is ________ energy.
light
Radios are designed to produce _________ energy for our listening enjoyment.
sound
A _________ is the "constant flow of electrons through a wire".
current
A __________ is the "device" used to open and close a circuit.
switch
For a ____________ to operate correctly, it must have a battery, a switch, a light bulb, and a conductor.
flashlight
A _________ is the component in a circuit that "allows a current to pass through easily".
conductor
A _________ is necessary for a flshlight to operate because it provides the energy.
battery
"Turning off the lights when no one is in the room" is a way to _________ energy, which means to save energy.
conserve
A ceiling fan and a computer require ________ energy to operater.
electrical
The ______ ______ are a geological feature of the Earth that can be found covering vast areas of the North and South Poles.
ice caps
A ________ is a "break in the crust of the Earth along which rocks move". This geological feature is most closely associated with earthquakes.
fault
The _________ ______ "slopes gently down beneath the surface of the water at the edge of a continent".
continental shelf