Electricity

Lesson One - Atoms

Learning Intentions

We are learning to:

• Walt understand the basic terms of what electricity is.
• Walt understand the structure of an atom.

Success Criteria

• understand the basic structure of an atom
• identify terms electrons, conductors, current, voltage and circuits.
• make a 3D representation of an atom.

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Key words -

Electrons, Conductors, current , voltage (what is different from US to NZ) , circuits

Lesson Two - Static Electricity

Learning Intentions

We are learning to:

• To know that there are Two types of charge. (+ and -).
• To know that only the negative (-) electrons move.
• Static electricity is when electrons move to an object and build up.
• Examples of static electricity

Success Criteria

• identify the symbols used in electrical circuits.
• able to draw series and parallel circuits.

Lesson Three - Circuits

Learning Intentions

We are learning to:

• Walt understand the basic symbols used in electrical circuits.
• Walt understand the difference between series and parallel circuits.

Success Criteria

• identify the symbols used in electrical circuits.
• able to draw series and parallel circuits.

Make an electrical circuit

A battery can light a bulb. It can only do this if there is something for the electricity to move through. Usually electricity moves through wires.

Electricity moves from a battery in one direction. It goes from the battery to the bulb. The bulb lights up. Then the electricity flows back into the battery.

The loop of wire that the electricity flows through is called a circuit. The switch is like a gate or bridge. It opens and closes a gap in the circuit.

Not all materials let electricity flow through them.

How to draw a circuit using the circuit symbols?

Symbols are used in such diagrams because electrical circuits may be very complicated. This can make it difficult to draw an accurate representation.

All scientists and electricians around the world use similar symbols. To make circuit diagrams as simple as possible they are.always drawn with the

connecting wires in a square or rectangle.

Series and parallel circuits.

In a series circuit, each component is connected one after the other in a single loop. The current flows through each component in turn. When two bulbs are connected in a series circuit they are dimmer than the same two bulbs connected in a parallel circuit to the same battery. This is because in a series circuit, the current goes through one bulb and then the other. The battery has to light two bulbs in a single circuit. If one bulb is removed from its holder, the circuit is broken, and the other bulb goes out.

Parallel circuits branch off and connect each bulb side by side. In this way, each bulb has its own circuit and is independent of the other bulb. Bulbs connected in parallel glow more brightly than the same bulbs connected in series. In a parallel circuit, the battery is powering only one bulb in each branch of the circuit. When two bulbs are connected in parallel and one of them blows or is removed, the other bulb still works. This is because the current has another path to flow through. Household lights are connected in parallel so that if one blows or is removed, the others do not all go out. Note that in a parallel circuit, the bulbs glow more brightly at the expense of the power source, which has to supply more electricity than if it is powering a series circuit. (If you are using batteries, they will run flat more quickly in a parallel circuit.)

Lesson Four - Conductors and Insulators

Learning Intentions

We are learning to:

• To know that if electrons flow through objects it’s a conductor. If electrons can’t flow through an object it is an insulator.
• To be able to investigate which materials are conductors and which are insulators.

Success Criteria

• Is able to identify which materials are conductors and which are insulators.

Lesson Five - Electrical Generation

Learning Intentions

We are learning to:

• understand how electricty is generated
• identify different forms of electricial is generation.

Success Criteria

• able to describe how electricty is generated.
• able to identify different ways electricty is generated.

Lesson Six -

Learning Intentions

We are learning to:

• Walt understand how electricty is transmitted to the end user
• Walt identify whether the different forms of electricial generation are renewable or non-renewable.

Success Criteria

• able to describe how electricty is treansmitted.
• able to list different renewable and non- renewable energy sources.

Using reading in Lesson 6 - Identify the different sources of electrical energy production.

Is it a renewable or non-renewable production source?

Do a positive/negative analysis on each source.

Electrictical Transmission

Read Chapter 11 - Energy Story

Lesson Six

Learning Intentions

We are learning to:

• Walt understand how making important decisions about energy generation, environmental management and many more practical and relevant concepts affects towns and cities.

Success Criteria

• able to build and manage their own virtual town.

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