ELECTRICITY WORKSHEET  (click on title for web page help)  (click here for the key when you must)
Draw a picture of an atom in the frame below.  The atom must have 2 neutrons, 2 protons and 2 electrons. What are the 3 types of particles in an atom?

Electrons move around the nucleus in a region called the _________.

How big is this cloud compared to the nucleus?

Which has more mass - the nucleus or the electron cloud?

When an atom picks up an extra negative or positive charge it becomes an ____.

 
The simplest element is ________ which has one proton and one electron.

Elements on the right side of the periodic table are _________.

When elements like oxygen and hydrogen combine they form ____________.

Elements combine together only when they ________ electrons.

An atom with a certain amount of electric charges is called an __________.

How many elements are there?

What element do you get if you remove a proton from the nucleus of a lithium atom? __________

  • How many states of matter exist in the universe?
  • Name them: ______       ______   _____    _____
  • Which state of matter is the most abundant in the universe?  _____________
  • ___________ exists at higher temperatures where molecules cannot exist.
  • Electrons become free of their ___________ and become rapidly moving ________ with high energy levels.
Electricity is simply the movement of __________ particles.

Positive or negative charges not moving are called _______.

Balloons rubbed on wool or hair pick up extra _________ and get attracted to the ________ or positive charges in the wall.

Balloons that both have an excess of negative charges will attract/repel/have no effect on each other.

During a lightning storm the constant upward motion of water molecules causes a buildup of ___________ charges in the clouds.

____________ results from the buildup and discharge of electrical energy between  positively and negatively charged areas.

Draw a picture representing the creation of lightning.
If we apply a force ____________ to a metal wire the electrons in the wire will jump from nucleus to nucleus in the wire.

This movement of electron to electron will cause an _______ __________ to flow in the wire.

  • Objects like copper which freely permit electrons to move through them have (low/moderate/high) resistance and are called _______________.
  • Objects like  which slow electrons down as they move through causing heat have  (low/moderate/high) resistance.
  • Objects which do not allow electrons to move through them have (low/moderate/high) and are called ______________.
  • You need to add ___________ to the atom to get the electrons to move.
Batteries use ______________ energy to get electrons to move from atom to atom.

This electromotive force that causes the electrons to flow is measured in ___________.

Household appliances use up to 110 or 220 volts whereas portable batteries may only use ____ volts.

 

Chemical properties of the battery left cause positive charges to move to the (top/bottom/side) of the battery and the negative charge to move to the (top/bottom/side) of the battery.

Electricity and Magnetism Demos

Fundamentals - advanced.

Generating electricity
Draw and label a  simple circuit consisting of a battery, switch and bulb.

Devices like light bulbs which have moderate resistance are drawn on schematic diagrams with ___________ lines.

Draw a schematic representation of the light bulb circuit at the right of this page...add another bulb to the schematic. 
Current passing through a wire is measured with an _________.

The earth is like a magnet because of the large amount of _______ in its core.

A region of space around a magnet where a magnetic force is felt is called a _______________ region.
The animation above shows the created current being measured by a/an __________________. If you move a magnet around a copper wire it will produce a _____________ in the wire.