NATURAL SCIENCES & TECHNOLOGY

GRADE 5

NATURAL SCIENCES GRADE 5

Energy & Change

ENERGY & ELECTRICITY

NATURAL SCIENCES GRADE 5

Cells & Batteries Batteries come in different sizes

A battery stores chemical energy.

NATURAL SCIENCES GRADE 5

Batteries

Batteries can start electrons flowing

Batteries are a source of electric energy

A battery, two wires and a light bulb can make an electric circuit

NATURAL SCIENCES GRADE 5

Batteries

The current starts flowing from the battery through a wire to the light bulb. This current is known as Direct Current (DC)

The other wire carries the electric current back to the battery. If you take the wire off one side of the battery, the light will not shine as you have broken the path.

NATURAL SCIENCES GRADE 5

Electricity

Switches on an electric circuit turn the current on and off

This is how a wall switch works to turn lights on and off in your home

The electric energy in your home does not come from batteries

You plug appliances into electric outlets in your walls

NATURAL SCIENCES GRADE 5

Electricity

The electric energy in the outlets comes from electric power plants

This current is known as Alternating Current - AC

NATURAL SCIENCES GRADE 5

Symbols used to represent different components in a simple circuit

Battery/ Open Wire/ LightClosedCell Switch Conductor BulbSwitch

NATURAL SCIENCES GRADE 5

Simple Circuit

Here is a symbolic representation of a simple circuit Always work neatly and with a ruler and PENCIL

NATURAL SCIENCES GRADE 5

Battery Cell

Light bulb

Connecting wires

NATURAL SCIENCES GRADE 5

Acknowledgements

http://www.longviewschool.org/course/basic-electricity-and-magnetism/

http://www.thunderboltkids.co.za/Grade5/03-energy-and-change/chapter2.html#

http://www.wikihow.com/Save-Electricity