Magnetism
5.1e Magnetism is a force that may attract or repel certain materials.

5.2a The forces of gravity and magnetism can affect objects
through solids, liquids and gasses.

5.2b The force of magnetism on objects decreases as distance
increases.
· Objects may be temporarily magnetized.
· opposites attract
· like poles repel
· a magnet is strongest at the poles
the area around a magnet that is affected by a magnet is called a magnetic field
·a magnet is an object that attracts or pulls on certain materials; this property of attraction is called magnetism
· · the earth is a giant magnet
· a force is a push or pull on an object

Static Electricity
· Everything is either matter or energy.
· All matter is made up of atoms
· Atoms are made up of protons, neutrons, electrons

· Objects can gain or lose electrons through friction
· When objects gain or lose electrons, it is electrically charged
· The build-up of electrons on a surface is called static electricity
· Static electricity can be fun to play with, but it is not particularly useful
· Lightning is a form of static electricity

Electricity
4.1a Energy exists in various forms: heat, electric, sound, chemical, mechanical, light.

4.1b Energy can be transferred from one place to another---static
electricity.

4.1c Some materials transfer energy better than others. Conductors
and insulators, static electricity.

4.1d Energy and matter interact: a bulb is lighted by means of an
electrical current.

4.1e Electricity travels in a closed circuit.

4.1f Heat can be released in many ways, for example rubbing
(friction/ static electricity) combining one substance with another (batteries)

4.2 One form of energy can be transferred into another form of
energy.

4.2a Everyday events involve one form of energy being changed to
another. Animals convert food to heat and motion, the sun’s energy
warms the air and water.

4.2b Humans utilize interaction between matter and energy. Humans
can use mechanisms to change energy into light, sound, heat, etc.

History and nature of science: inventors Edison and Franklin
Science and technology: light bulbs, electric gadgets

Science in personal and social perspectives:
· the use of electricity has made life easier in many ways
· people make choices about how to use natural resources, such
as generating electricity