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Our Physical World Part 3
1. Introduction to static electricity
By the end of lesson 1, pupils should be able to:
1.1
use the words static, repel and attract when discussing
electrical charge
1.2
describe the effects a charged object has on another object
Knox Academy Science Department
S2 Science
Our Physical World Part 3
2.Different types of charge
By the end of lesson 2, pupils should be able to:
2.1
describe an experiment to show what can happen when two
charged rods are brought together.
2.2
state that there are two types of charge called positive and
negative.
2.3
state that two charges the same repel each other, and that
two different charges attract each other.
Knox Academy Science Department
S2 Science
Our Physical World Part 3
3. Van de Graaf Generator
By the end of lesson 3, pupils should be able to:
3.1
explain experiments when using the VDG
3.2
explain that sometimes charges can move and that moving
charge is called an electrical current
3.3
recognise the symbol for an ammeter
Knox Academy Science Department
S2 Science
Our Physical World Part 3
4.Current electricity
By the end of lesson 4, pupils should be able to:
4.1
state that an electrical current is a flow of negative charges
4.2
negative charges flow when a cell is connected into a circuit
4.3
draw the symbol for both a cell, a battery and other circuit
symbols
4.4
state that cells and batteries change chemical energy into
electrical energy
4.5
state that a current flows from the negative end of a cell to
the positive end
Knox Academy Science Department
S2 Science
Our Physical World Part 3
5. A complete circuit
By the end of lesson 5, pupils should be able to:
5.1
state that there needs to be a complete circuit before a
current will flow
5.2
state what a conductor is
5.3
state what an insulator is
5.4
explain that the material in a circuit must be made from a
conductor for a current to flow
Knox Academy Science Department
S2 Science
Our Physical World Part 3
6. Series and parallel circuits
By the end of lesson 6, pupils should be able to:
6.1
describe the differences between series and parallel circuits
6.2
draw a circuit diagram with 3 bulbs in series with a cell
6.3
draw a circuit diagram with 3 bulbs in parallel with a cell
6.4
build the above circuits
Knox Academy Science Department
S2 Science
Our Physical World Part 3
7. Measuring current in a series circuit
By the end of lesson 7, pupils should be able to:
7.1
state how we measure current
7.2
state the unit of current is the ampere or amp
7.3
connect an ammeter into a series circuit
7.4
draw a circuit diagram showing the circuit above
7.5
state that the current is the same at any point in a series
circuit
7.6
solve problems relating to the current in a series circuit
Knox Academy Science Department
S2 Science
Our Physical World Part 3
8. Measuring current in a parallel circuit
By the end of lesson 8, pupils should be able to:
8.1
connect an ammeter into a parallel circuit
8.2
draw a circuit diagram showing the above circuit
8.3
state the relationship between the current coming from and
going to the cell in a parallel circuit
8.4
state the relationship between the currents in the branches of
a parallel circuit and the current from the cell
8.5
solve problems relating to the current in a parallel circuit
Knox Academy Science Department
S2 Science
Our Physical World Part 3
9. Resistance to electrical current
By the end of lesson 9, pupils should be able to:
9.1
state that opposition to electrical current is called resistance
9.2
state that the longer a conductor is the greater its resistance
9.3
state that the thicker a conductor is the smaller its resistance
9.4
state that different materials have different resistances
9.5
state that the bigger the resistance of a circuit the smaller the
current and that the opposite is true
Knox Academy Science Department
S2 Science
Our Physical World Part 3
10. Measuring voltage in a series circuit
By the end of lesson 10 pupils should be able to:
10.1 recognise and use the circuit symbol for a voltmeter
10.2 use a voltmeter to measure the voltage across components in a
series circuit
10.3 state the relationship between the supply voltage the the voltages
across each component in a series circuit
10.4 solve problems using this relationship
Knox Academy Science Department
S2 Science
Our Physical World Part 3
11.Measuring voltages in a parallel circuit
By the end of lesson 11 pupils should be able to:
11.1 use a voltmeter to measure the voltage across components in a
parallel circuit
11.2 state the relationship between the supply voltage and the voltage
across components connected in parallel
11.3 solve problems using the above relationship
Knox Academy Science Department
S2 Science
Our Physical World Part 3
12.Variable resistors and switches
By the end of lesson 12 pupils should be able to:
12.1 explain how a switch works in terms of its resistance
12.2 draw the circuit symbols for a fixed and a variable resistor
12.3 describe two everyday uses of variable resistors
Knox Academy Science Department
S2 Science
Our Physical World Part 3
13.Investigation of Ohm’s law
By the end of lesson 13 pupils should be able to:
13.1 state the resistance is measured in Ohms
13.2 describe an experiment to show what happens to the current
through a resistor as the voltage is changed
13.3 state that V/I is the same for any single resistor R
13.4 state the the value of V/I equals the value of resistor R
13.5 use this relationship to calculate values of R
13.6 draw a line graph of the V against I for this experiment
Knox Academy Science Department
S2 Science
Our Physical World Part 3
14. The Thermistor
By the end of lesson 14 pupils should be able to:
14.1 draw and recognise the circuit symbol for a thermistor
14.2 state that the resistance of a thermistor depends on its
temperature
14.3 state that the higher the temperature of a thermistor the smaller
its resistance, and that the opposite is true
14.4 use Ohm’s law to calculate the resistance of a thermistor
14.5 state that the larger a resistor in a series circuit the bigger its
share of the supply voltage
Knox Academy Science Department
S2 Science