Energy
Push Your Knowledge
Electricity
Electric Knowledge
Current knowledge
100
Objects in motion have _________ energy.
Kinetic
100
Two objects rubbing together create...
friction
100
Electrical energy moves easily through materials that are...
conductors.
100
Magnetism and ___________ are closely related.
electricity
100
An electric current creates a magnetic field, and a magnetic field creates an ________ __________
electric current
200
Potential energy is ___________ energy.
stored
200
Friction resists or stops motion and creates...
heat
200
Wires are usually made from ______ because it conducts electricity well.
metal (usually copper)
200
Materials like rubber, plastic, and wood do not conduct electricity well. They are...
insulators.
200
If you rub your feet on the carpet, or rub a balloon on a wool sweater, you may create...
static electricity.
300
Energy in moving or spinning objects like gears, car wheels or bicycles is _________ energy.
mechanical
300
Unless acted on by a force, objects in motion tend to stay in motion and objects at rest tend to stay at rest. This is the principal of...
inertia
300
Which will light a bulb, an open or closed circuit?
A closed circuit.
300
If you wrap a a wire around a nail and run electricity through the wire, you have created a ...
electromagnet.
300
Benjamin Franklin learned that lightening was a form of electricity. What kind of electricity?
static electricity
400
There are many forms of energy. Energy formed by the movement of electrons is...
electrical energy
400
It's harder to push a real truck than a toy truck because objects with more mass have...
more inertia.
400
If your string of holiday lights goes dark when one little bulb burns out, the string of lights is a:
series circuit
400
Electromagnets are useful because they can be...
turned on and off.
400
Static electricity occurs when negatively charged ________ are rubbed off of one surface and on to another.
electrons
500
Energy stored in food, batteries, and fossil fuels like coal and gasoline is ...
chemical
500
The iron filings in this picture show _________ of __________ created by a magnetic field.
lines of force
500
This circuit has more than one pathway for the flow of electric current. If one bulb burns the others will remain lit. It is a 
parallel circuit.
500
This is a dry-cell battery. The unit of current in your battery is measured in _______. Common dry-cells usually have low ___________. 
volts
voltage
500
Magnets are attracted to these metals...(can you name all three?)
1. iron(steel)
2.colbalt
3.nickel