1. Chapter 4
Lesson 3: Magnetism
4th Grade Science p.38

2. Vocabulary Magnetism Magnetic Field Poles
The ability to push or pull another object that has magnetic properties
Magnets have a north (N) and south (S) pole
Magnetic Field
The directions of magnetic forces around a magnet
Poles
Ends of a magnet where a magnet’s pull is strongest.

3. Activity Question – What objects are magnetic? Hypothesis – Supplies –
Conductive
Insulator
Shiny Nail
Dull Nail
Straw
Sponge
Black Rock
Pebble
Metal Screen
Brass Fastener
Paper Clip
Copper
Screw
Yarn
Cardboard
Wood Stick
Washer
Aluminum Foil
Activity
Question – What objects are magnetic?
Hypothesis –
Supplies –
Conclusion –

4. S N N N Magnetic Attraction Like Charges Attract! Attract Repel
When a magnet goes towards an object
Repel
When a magnet pushes away from an object S N
Like Charges
Attract!
Opposite Charges Repel N N

5. Vocabulary Electromagnets Generator
A temporary magnet created when current flows through wire trapped in coils around an iron bar.
Generator
A device that creates electric current by spinning an electric coil between the poles of a magnet

6. Number of Paperclips picked up
Number of wire loops
1 battery
2 batteries
20 loops
40 loops
60 loops
Activity
Question –
Hypothesis –
Supplies –
Procedure –
Conclusion –