# Magnets

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```					   Magnets
A magnet is an object
that sticks to iron.
A magnet is an object that sticks to iron.
Force

A force is a push or a pull.
Attract           Repel
• When magnets pull • When magnets
together, we say    push apart, we say
they attract.       they repel.
Temporary                 Induced
• A piece of iron that   • Induced
behaves like a           magnetism is the
magnet when it is        influence of a
touching a               permanent
permanent magnet         magnet’s magnetic
is a temporary           field on a piece of
magnet.                  iron, which makes
the iron act like a
magnet.
Graph
• A graph organizes data visually to show a
relationship between two things.
• The intersection of two lines is the point
at which they cross.
Prediction
A prediction is an educated guess based
on data or previous experience.
Detector
• A detector is
something you use to
something you can’t
see.
D-cell
• The D-cell is the source of electricity.
• A battery refers to more than one cell, but
most people use the words battery and D-
cell interchangeably.
• An electricity source provides the energy
to light the bulb.
• An electricity receiver is a component
that uses the electricity from the source to
make something happen.
Circuit

• A circuit is a
pathway for
the flow of
electricity.
Components
• D-cells, bulbs,
and wires are
circuit
components.
Schematic Diagram

• A schematic
diagram is a
way to
represent a
circuit on a
piece of
paper.
Filament
• The filament of a bulb is the part that gets hot
and produces light.
Circuit Base
• A circuit base holds components needed
to build a circuit.
Fahnstock Clip
• A Fahnstock clip or metal clip that
connects wires in a circuit.
Switch
• A Switch is a device used to open and
close circuits.
Open Circuit Closed Circuit
• An open circuit is   An closed circuit is a
an incomplete        complete circuit through
circuit through      which electricity flows.
which electricity
will not flow.
Conductor                Insulator
• A conductor is a    • An insulator is a
material that prevents
substance,            the flow of electricity,
commonly a metal      commonly plastic,
such as copper or     rubber, glass, or air.
aluminum, through
which electricity
will flow.
Series Circuit
• A circuit with only one pathway for current
flow is a series circuit.
Parallel Circuit
• A parallel circuit splits into two or more
pathways before coming together at the
battery.
Electromagnet
• An electromagnet is a coil of wire, usually
wound around a core of iron steel, which
produces a magnetic field when electricity
flows through the wire.
Core            Coil
• The core is the   • A coil is wire
material around     wound repeatedly
which a coil is     around a central
wound.              core
Technology
• Technology
applies the results
of scientific
research.
Telegraph
• A telegraph is a device for sending coded
messages by signals produced by closing and
opening an electric circuit.
• A telegraph key is a switch that completes the
circuit in a telegraph system.
• The gap is the space between the steel strip
and the electromagnet.
• A code is a set of signals that represents letters
or words for sending messages.
Long-Distance
• Long-Distance refers to something that is
far away.

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