Download P2.3 - School

SCIENCE DEPARTMENT SCHEME OF WORK
Year
10/11
AQA Unit:
P2.3.1
Contact RTS/JI/WR
Programs of Study
Lesson structure
Resources (Strategies)
- Worksheets
- video
- web sites/IT sources
- Text Book Pages for cover etc
P2 Currents in Electrical
Circuits
AQAP2 Lesson1 – Follow Smart Slides
-
Practical Information
Safety notes
(Risk Assessment)
Stand pupil in plastic tray. Discuss
why this is necessary in terms of
electron movement.
Lesson 1
P2.3.1 Static Electricity
Starter covering the forces topic with music on
powerpoint. Pupils to list keywords.
1. When certain insulating
materials are rubbed
together, negatively
charged electrons can
be transferred.
Teacher to demonstrate rubbing rod and cloth,
balloons, and Van de Graaff generator.
2. Understand how
positive and negative
charge is formed.
Pupils to consolidate understanding about the
structure of the atom.
3. Understand how
charges cause repulsion
and attraction.
Observe direction of spark discharge,
relate to the movement of electrons,
and discuss the insertion of a bulb in
to a ‘circuit’.
Assessment (AfL)
Homework
Seal
Pupils to consolidate
understanding about the
structure of the atom.
Appropriate Doddle
Task.
Rub polythene cloth and attract water.
Use a coulomb meter to demonstrate positive and
negative charges on rod/balloon.
Reiterate that charge is the removal or addition of
electrons, not the movement of the positive nuclei.
Draw balloon diagrams on the board
and show that the balloon will be
attracted/ ‘stuck’ to a wall, regardless
of whether it is positive or negative
charge.
Nelson Thorne AQA Physics
p. 150-151 Qs 1 & 2
(Spec Ref: a, b,c,d ,e)
Longmans AQA Physics
p. 122-123 Qs 1-8
Static 1
Static2
Worksheets.
SCIENCE DEPARTMENT SCHEME OF WORK
Year
10/11
AQA Unit:
P2.3.1
Contact RTS/JI/WR
Programs of Study
Lesson structure
Resources (Strategies)
- Worksheets
- video
- web sites/IT sources
- Text Book Pages for cover etc
P2 Currents in Electrical
Circuits
AQAP2 Lesson 2 – Follow Smart Slides
Lesson 2
Set up a simple circuit.
P2.3.2 Electrical Current
Demonstrate measurement of current and voltage
include a variable resistor/rheostat and demonstrate
how current varies.
1.
Electric current is
the rate flow of electric
charge.
I = Q/t
Pupils to recognise symbols and describe their
purpose.
3.
Be able to recognise
circuit components and
build simple circuits.
Practical Information
Safety notes
(Risk Assessment)
Pupils as electrons. Use sweets (wrapped) as voltage.
Set up movement of pupils to represent series and
parallel circuits and how current (pupils), voltage
(sweets), and resistance (constrictions) behave in
these circuits.
(Spec Ref: a, b, c)
Assessment (AfL)
Homework
Seal
Nelson Thorne AQA Physics
P152-153 Qs 1-3
Appropriate Doddle
Task.
Longmans AQA Physics
p. 124
Worksheet:
Use low current power packs.
Grey Ammeters and Voltmeters.
Electrical Circuit
Definitions
Teacher can also demonstrate LED, LDR etc
Define electrical current and voltgage.
2.
-
At the time of writing department has
a large jar of boiled sweets.
SCIENCE DEPARTMENT SCHEME OF WORK
Year
10/11
AQA Unit:
P2.3.2
Programs of Study
Lesson structure
Resources (Strategies)
- Worksheets
- video
- web sites/IT sources
- Text Book Pages for cover etc
P2 Currents in Electrical
Circuits
AQAP2 Lesson3 – Follow Smart Slides
Lesson 3
P2.3.2 Electric Circuits
1.
2.
3.
How current and
voltage behave in series
circuits.
How current and
voltage behave in
parallel circuits.
To be able to draw
circuit diagrams and
measure current and
voltage using the
appropriate equipment.
Contact RTS/JI/WR
Pupils as electrons. Use sweets (wrapped) as voltage.
Set up movement of pupils to represent series and
parallel circuits and how current (pupils), voltage
(sweets), and resistance (constrictions) behave in
these circuits.
Pupils to then draw and write down the circuit rules
for parallel and series circuits. (Resistance will be reiterated after Ohms Law).
Pupils then construct series and parallel circuits using
the components inc Rheostats, bulbs, and LEDS.
Pupils to measure current and voltage to prove these
circuit rules.
Pupils will notice the dimming effect of variable
resistors and LEDs only lighting in one orientation.
-
Practical Information
Safety notes
(Risk Assessment)
Use low current power packs.
Grey Ammeters and Voltmeters.
Assessment (AfL)
Homework
Seal
Appropriate Doddle
Task.
Or use 12V power packs, on 3V only.
Worksheets.
Be aware if voltmeters or ammeters
are left on they will use up their
internal batteries.
Parallel circuits
(Spec Ref: j, k, l)
Please ensure that they these are
turned off at the end of the lesson.
Pupils may need assistance to go
through the worksheets until they are
confident with parallel circuit rules.
Nelson Thorne AQA Physics
P152-153 Qs 1-3
Longmans AQA Physics
P.124
SCIENCE DEPARTMENT SCHEME OF WORK
Year
10/11
AQA Unit:
P2.3.1
Contact RTS/JI/WR
Programs of Study
Lesson structure
Resources (Strategies)
- Worksheets
- video
- web sites/IT sources
- Text Book Pages for cover etc
-
Practical Information
Safety notes
(Risk Assessment)
P2 Currents in Electrical
Circuits
Nelson Thornes
AQAP2 Lesson 4 – Follow Smart Slides.
Lesson 4
Define Ohms Law.
P2.3.2 Electrical Current
1.
2.
Ohms Law – the
current through a
resistor, at a constant
temperature, is
proportional to the
potential difference
across it.
The resistance of a
resistor can be
calculated by
measuring the current
and potential
difference.
V = IR
Use 12V power packs.
Grey Ammeters and Voltmeters.
Rheostat as resistor, connected across
bottom terminals
Page 154 - 155
Questions 1 & 2
Pupils to investigate Ohms Law by setting up the
circuit to the right.
Longmans
Encourage pupils to set up the circuit without the
voltmeter at first to avoid confusion. Then add once
the main circuit is complete.
Page 124-125
Qs 1-8
Use the dial on the front of the power pack to vary
the voltage (V), start at 0 with the pack off, read the
value of current in Amps from the Ammeter.
Pupils to record their results and plot V vs I, the
resulting graph will have a gradient of R (R=V/I).
Typical values IRO 12 Ohms
(Spec Ref: f, h, d, e)
3.
Assessment (AfL)
Homework
Seal
If pupils complete this they can then
vary the resistance by moving the
slider to the middle of the rheostat,
and the connection on one side to the
top rail.
Plot a graph of the resulting V vs I (
gradient should be about half of that
before.
Sample data included in
the folder as homework
or in case of other issues.
SCIENCE DEPARTMENT SCHEME OF WORK
Year
10/11
AQA Unit:
P2.3.2
Contact RTS/JI/WR
Programs of Study
Lesson structure
Resources (Strategies)
- Worksheets
- video
- web sites/IT sources
- Text Book Pages for cover etc
-
Practical Information
Safety notes
(Risk Assessment)
Assessment (AfL)
Homework
Seal
(Spec Ref: m,n,o, p, q)
P2 Currents in Electrical
Circuits
AQAP2 Lesson 5 – Follow Powerpoint Slides
Lesson 5
Pupils to set up the circuit to the right. Set up the
rheostat in series with the bulb, this time the
voltmeter is across the bulb.
P2.3.2 Electric Circuits
1. Current potential
graphs are used to show
how current through a
component varies with
potential difference
across it.
2. To observe how
resistance of filament
bulb and LED are nonOhmic.
3. To observe how the
resistance of an LDR
and Thermistor varies.
Worksheet to follow.
Plus book work
Questions, but there will
Be further opportunity
In the next lesson.
Pupils to record how current varies with PD to
produce current (Y axis) - PD (x-axis) graph.
Longmans 126-127
Qs 1-8
Pupils could then reverse the current by swapping the
power pack leads around and repeating the
investigation for negative PD and therefore current to
produce an S-shape graph.
Advanced students can then investigate the same for
LEDs. (However a multimeter on milliamps will be
required.
Leads in the bottom two connectors,
Turn the dial to mA
Further investigations can be done for Thermistor and Caution: Water and electrics!!
LDR varying temperature and Light Intensity
Use tracing paper to vary light
respectively.
intensity
SCIENCE DEPARTMENT SCHEME OF WORK
Year
10/11
AQA Unit:
P2.3.1
Contact RTS/JI/WR
Programs of Study
Lesson structure
Resources (Strategies)
- Worksheets
- video
- web sites/IT sources
- Text Book Pages for cover etc
-
Practical Information
Safety notes
(Risk Assessment)
Assessment (AfL)
Homework
Seal
P2 Currents in Electrical
Circuits
AQAP2 Lesson 6 – Follow Smart Slides.
(Spec Ref: m,n,o, p, q)
Lesson 6
Drag and drop activity to match the diagram circuit to LDRs and Thermistors – a short
the resulting current – PD graphs.
summary worksheet
Nelson Thornes
154-157
P2.3.2 Electrical Current
1. The resistance of a
filament light bulb
increases as the
temperature of the filament
increases.
2. The current through a
diode flows in one direction
only, so an LED only emits
light in this forward
direction. The diode has
high resistance in the
reverse direction.
3. How Resistances of
LDRs and Thermistors
vary with light intensity
and temperature.
Resistor
Filament bulb
Diode
Thermistor
LDR
The reason for resistance variation is then discovered
via the following slides and links to applets and
videos.
Questions from the book are then used to re-enforce
these concepts.
Pupils can match the graph to the component as a
plenary.
2 questions with answers
Questions as on slides
and sheet.
Longmans 126-127
Qs 1-8
SCIENCE DEPARTMENT SCHEME OF WORK
Year
10/11
AQA Unit:
P2.3.1
Programs of Study
Lesson structure
Resources (Strategies)
- Worksheets
- video
- web sites/IT sources
- Text Book Pages for cover etc
P2 Currents in Electrical
Circuits
Lesson 7
-
Practical Information
Safety notes
(Risk Assessment)
Assessment (AfL)
Homework
Seal
AQAP2 Lesson7 – Follow Smart Slides
Worksheets
H/W or Test
Consolidation lesson bringing together circuit and
resistance rules.
Resistance Questions
Resistance in circuits
Resistance in series
Resistance in parallel
Print pages 8 -11
From P2 AQA Revision
Booklet
P2.3.2 Electrical Current
Series Rules:
1. The potential difference
in a series circuit is the sum Longmans p.128-129
Nelson Thornes 158-159
of the of the potential
difference of each cell
Parallel Rules
2. For components in series
how the resistance, current Longmans p.130-131
and potential difference are Nelson Thornes p.160-161
affected
3. For components in
parallel how the current,
potential difference (ext &
resistance) are affected.
Contact RTS/JI/WR
Answer sheets for the latter two.
Nelson Thornes Summary Questions
p.162 1-9
Nelson Thornes Exam Style Questions
p. 163 1-4
Summary Questions for
This section.