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
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