Year 6 Week 3 Science Monday This lesson

Let’s see what we remember from last week’s lesson: • What is the current?

Answers • What is the current? The flow of electricity is called the current.

Let’s play a game! • Learn more about circuits by clicking on the following

Would these circuits work? Give reasons for your answer. • A cell, a bulb,

Answers: • A cell, a bulb, both wires connected to the negative terminal. •

TASK: Picture of a Circuit. • A circuit always has a cell but it

TASK: Diagram of a Circuit. • When drawing circuit diagrams, rather than drawing detailed

What your diagram should look like: • Check and edit your diagram. • Use

TASK: Answer these questions in your book. • What is the symbol for a

Answers: Check your work. • What is the symbol for a cell? • Which

More Challenging Symbols… ameter: measures the current in a circuit. resistor: restricts the flow

Further Learning… • Click on the link to play some games using your knowledge

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Year 6 Week 3 Science Monday This lesson we will be learning how to draw a circuit diagram using the correct symbols.

Let’s see what we remember from last week’s lesson: • What is the current? • What is measured in volts? • What is measured in amps? • Why are switches useful? • What is a conductor? Give an example. • What is an insulator? Give an example.

Answers • What is the current? The flow of electricity is called the current. What is measured in volts? The speed at which the electricity flows is called the voltage and it is measured in volts. • What is measured in amps? The amount of power that a cell has is measured in amps. • Why are switches useful? Switches are useful because they give people control over the circuit. Switches allow people to ‘make’ or ‘break’ a circuit. When a switch is in the ON position, the circuit is complete. When the switch is in the OFF position, a false gap is created and the circuit is broken. • What is a conductor? Give an example. Conductors are materials that allow electricity to travel through them. When they are included in a circuit, the bulb will still light up. Metals like steel, copper, iron, gold and silver are good conductors. • What is an insulator? Give an example. Other materials do not allow electricity to pass through them. We call these materials insulators. When insulators are included in a circuit, the bulb will not light up. There are lots of different insulators such as plastic, rubber and glass.

Let’s play a game! • Learn more about circuits by clicking on the following link: • https: //sciencekids. co. nz/gamesactivities/electricitycircuits. html • Explore how changing the number of bulbs, cells and voltage can affect how a circuit works.

Would these circuits work? Give reasons for your answer. • A cell, a bulb, both wires connected to the negative terminal. • A cell, a bulb, a switch and three wires. • A cell and a bulb which has one wire not connected.

Answers: • A cell, a bulb, both wires connected to the negative terminal. • A cell, a bulb, a switch and three wires. • NO because it is not a • YES because it is a complete circuit. • A cell, and a bulb which has one wire not connected. • NO because it is not a complete circuit.

TASK: Picture of a Circuit. • A circuit always has a cell but it can also contain other electrical components such as bulbs, buzzers and motors. • Copy and label this picture of a circuit in your books.

TASK: Diagram of a Circuit. • When drawing circuit diagrams, rather than drawing detailed components, we use simple symbols to represent the different components. • Now have a go at drawing the SAME circuit again in your books. This time use the correct symbols. cell motor bulb wire OPEN switch (off) buzzer CLOSED switch (on)

What your diagram should look like: • Check and edit your diagram. • Use a ruler to draw the wires. • DO NOT be tempted to make wires wiggly because the whole point is to make it easier to see what is connected to what. This is a circuit with: • 2 batteries • 1 bulb This is a circuit with: 1 battery 1 buzzer

TASK: Answer these questions in your book. • What is the symbol for a cell? • Which component is the symbol for? • What is the symbol for a buzzer? • Which component is the symbol for? • What is the symbol for an OPEN (off) switch? • Which component is the symbol for?

Answers: Check your work. • What is the symbol for a cell? • Which component is the symbol for? It is the symbol for a bulb. • What is the symbol for a buzzer? • Which component is the symbol for? It is the symbol for a motor. • What is the symbol for an OPEN (off) switch? • Which component is the symbol for? It is the symbol for a CLOSED (off) switch.

More Challenging Symbols… ameter: measures the current in a circuit. resistor: restricts the flow of current in a circuit. variable resistor: resistors where the resistance levels can be adjusted.

Further Learning… • Click on the link to play some games using your knowledge of electrical symbols: https: //www. bbc. co. uk/bitesize/topics/zq 99 q 6 f/articles/zs 7 g 4 j 6