Science/Foss Unit Study Guide Magnetism and Electricity 4th Grade Rutherford Elementary School

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Science/Foss UnitStudy GuideMagnetism and
Electricity4th GradeRutherford Elementary
School
Ms. Blair Room 205
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Investigation 1The Force

• Vocabulary Terms
• Force A push or a pull
• Magnet - An object that sticks to iron
• Magnetism A specific kind of force. A property
  of certain kinds of materials that causes them to
  attract iron and steel.
• Temporary magnet Behaves like a magnet when it
  is touching a permanent magnet.
• Induced magnet -The influence of a permanent
  magnets magnetic field on a piece of iron, which
  make the iron act like a magnet.
• Graph Organizes data visually to show a
  relationship between two things.
• Prediction An educated guess based on data or
  previous experience
• Intersection - Two lines and the point at which
  they cross.
• Attract Pull towards one another.
• Repel Push away.
• Content/ Concepts Learned
• Magnets stick to iron.
• Two magnets can attract and repel.
• Magnetism can be induced only in iron or steel (
  and a few other metals)
• The magnetic force acts through space and most
  materials.
• The magnetic force of attraction between two
  magnets decreases with distance.
• The greater of the distance between two magnets,
  the weaker the force of attraction.

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Investigation 2Making Connections

• Vocabulary Terms
• D-cell The source of electricity
• Batter More than one cell (battery and D-cell
  used interchangeably)
• Electricity source - Provides the energy to light
  the bulb.
• Electricity receiver A component that uses the
  electricity from the source to make something
  happen.
• Circuit A pathway for the flow of electricity.
• Filament A bulb is the part that gets hot and
  produces light
• Component D-cell, bulbs, and wires.
• Circuit base Holds many components needed to
  build a circuit.
• Fahnstock clip A metal clip that connects wires
  in a circuit.
• Switch A device used to open and close
  circuits.
• Open circuit An incomplete circuit through
  which electricity flows.
• Schematic diagram A way to represent a circuit
  on a piece of paper.
• Conductor A substance, commonly a metal such as
  copper and aluminum through which electricity
  will flow.
• Insulator A material that prevents the flow of
  electricity (plastic, rubber, glass or air).
• Content/ Concepts Learned
• D-cell is a source of electric energy.
• A bulb is an energy receiver that produces light

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Investigation 3Advanced Connections

• Vocabulary Terms
• Series circuit A circuit with only one pathway
  of current flow.
• Parallel circuit Splits into two or more
  pathways before coming together at the battery.
• Content/Concepts Learned
• A circuit with only one pathway for current flow
  is a series circuit.
• Components in a series circuit share the
  electric energy.
• Cells in a series must be oriented in the same
  direction.
• Components in a parallel circuit each have a
  direct pathway to the energy source.
• A single D-cell can run many components when they
  are connected in parallel.

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Investigation 4Current Attraction

• Vocabulary Terms
• Electromagnet A coil of wire, usually wound
  around a core of iron and steel, which produces a
  magnetic field when electricity flows though the
  wire.
• Core The material around which a coil is wound.
• Coil Wire wound repeatedly around a central
  core.
• Content/Concepts Learned
• A magnet can be made by winding an insulated wire
  around an iron core and running current through
  the wire.
• The magnetism produced by an electromagnet can be
  turned on and off.
• The more winds on the core of an electromagnet
  the stronger the magnetism.
• Tighter coils produce a stronger electromagnet.
• All the coils need to wound in the same
  direction.
• A D-cell added in series makes a stronger
  electromagnet added in parallel, it does not
  strengthen the electromagnet.
• Thicker wires make a stronger electromagnet.

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Investigation 5Click It

• Vocabulary Terms
• Technology Applies the results of scientific
  research.
• Telegraph A device for sending coded messages
  by signals produced by closing and
• opening an electric circuit.
• Key A switch that completes the circuit in a
  telegraph system.
• Gap The space between the steel strip and the
  electromagnet.
• Code A set of signals that represents letters
  or words for sending messages.
• Long-distance refers to something that is far
  away.
• Content/Concepts Learned
• Technology uses science to solve problems.
• A telegraph is an electric communication device
• The clicks produced by the telegraph can be made
  into a code.
• A code is a symbolic system used for
  communication.
• To connect two telegraphs for two-way
  communication, you have to make two complete
  circuits.

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Additional Notes

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