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Magnets

Magnets have two poles!

              A north pole and a south pole.

They react together.

                    What happens to like poles?

                              Answer: Like poles repel or push away from each other.

                    What happens to opposite poles?

                              Answer: Opposite poles attract or come together. 

Electricity

It's fun to  build electrical circuits in class: both open and closed! 

                 What is a circuit? 

                    Answer: A circuit is the path along which electric charges move.

               What are the parts of a circuit?  Answer: There are 3 parts to a circuit:


     There is a source of electricity (A battery
)

     There is a path along which charges can move ( wires)

     There is some object that uses the electricity (light bulb)

We are learning how to identify materials as being conductors or insulators.

                    A paper clip is a conductor.  What are conductors?

                                   Answer: a conductor allows the electricity to pass through it.  

(metals) 

                    An eraser is an insulator.  What are insulators?

                                   Answer: an insulator does not allow the electricity to pass through it.

(rubber, plastic, wood)

If we have time, we will build circuits using a switch.  

               Why does the light go out when you lift the switch? 


                         Answer: A switch  opens and closes the circuit. 

•           When it is closed, the light bulb glows.
• When it is open, the light bulb is out.

Force and Motion