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Ernest FERRER Basic electricity Activities. Lesson 1
Lesson 1 Introducing energies and electricity
Activity 1Read/Listen to the main sources of energy and link them with the suitable group, according the Power Point presentation about energies and electricity we have just watched.
Kind of primary energy Energy name Origin
Wind
Renewable Waves and tides Direct solar
Water Earth
Nuclear Moon and Solar
Non-renewable Solar Solar storage
Fossil: coal, gas, oil Earth storage
Geothermal
Activity 2Research about electricity as a primary source using an encyclopaedia or the Internet. Then complete the text using the word banks below. Be aware that some words can be used several times whilst some of them should not be used at all.
During a storm there are some atmospheric electrical discharges. The light that we see is
called _______________ .The sound that we hear is called__________________.
We cannot use electricity as a __________ energy source because it is impossible at present
time to predict _______ and _________ the atmospheric electrical discharge will happen.
Moreover, we don’t have the technology required to manage the energy displayed by a
__________. The ____________ could reach __________ up to 30.000 ºC and deliver in just
0,1 seconds the power needed to briefly light 16.000 bulbs. It is just too ______ and too
______ for us.
On the other hand we can use a ________________ to protect us from the harmful effects of
electrical shocks during storms.
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big secondary thunderbolt where lightning temperature lightning-conductor primary when quick
Ernest FERRER Basic electricity Activities. Lesson 1
Activity 3Read the following questions/sentences and answer/complete with your partner’s help after watching an interactive internet presentation. “Electricity in our lives” shows how important electricity is in our lives and how many electrical appliances we have around.
http://www.engineeringinteract.org/resources/siliconspies/flash/concepts/electricity.htm
An electrical appliance is ____________________________________________________ like
____________, _________________, _________________.
A battery is ______________________________________________________________. The
________________, the _____________________ and the _________________ use
batteries.
A mains supply is _________________________________________________________. The
________________, the __________________ and the ________________ use mains supply.
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Ernest FERRER Basic electricity Activities. Lesson 2
Lesson 2. Assembling a basic electricity circuit
Activity 1Watch the following internet presentation called ‘Simple circuits’ and then answer the following questions
http://www.engineeringinteract.org/resources/siliconspies/flash/concepts/simplecircuits.htm
3 out of 4 following elements are essential for an electric circuit to work. What are they?
wires battery appliance switch.
Now complete the sentence about the purpose of each element
The battery provides_______________
The wires connect and transport__________________
The electrical device/appliance consumes__________________ and convert it into _________
The switch controls__________________________
Activity 2Watch, read, listen to and repeat the selected slides and questions in the following internet presentations about circuit and conductors.1st slide and quiz questions 1 to 4 and 9 to 10 http://www.bbc.co.uk/schools/scienceclips/ages/8_9/
circuits_conductors_fs.shtml
Copy the question and correct answer or complete sentence from the quiz1)
2)
3)
4)
9)
10)
Now summarize your learning about conductivity by completing the sentences below.
An electrical conductor is a material _______________________________________________
like _____________ and ________________.
An electrical insulator is a material ________________________________________________
like _____________, _______________ and ___________.
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Ernest FERRER Basic electricity Activities. Lesson 2
Activity 3Watch very carefully the circuit your teacher is assembling.
Here you have several sentences used to list the instructions to assemble a basic electricity circuit. Complete the missing words. Sort the sentences into
the right order.
Connect one wire from the battery to a __________
Turn the ________ on and off in order to check if the circuit works
Connect the bulb and the switch to each other with a _________
Take all the components you need: a battery, a set of wires, a switch and a _______
Connect the other wire from the _________ to a bulb
Connect each terminal or end of the battery to a different ________
Now work with a partner and assemble the same circuit the teacher has done. First write the list of elements you will need and ask for them to the teacher
We need 1 bulb,...
While assembling, use the following language structures alongside the vocabulary we have learnt.
Assembling the circuitGive me the ______________. Take the ________________. Put the _______________.
Connect the __________with ______________.
Fasten the wires to each terminal or end of _____________.
Checking the circuit. Write or underline the right word.Turn the ______________ off and on. The circuit works / doesn’t work
Perhaps there is a loose connection on ____________.
Check/Double check if __________ is correctly connected.
Summarizing (write it in your notebook)Our circuit didn’t work before because______________________, so we have checked the
____________. There was a mistake/a wrong connection in__________________.
Our circuit (now) works correctly because___________________________________.
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Ernest FERRER Basic electricity Activities. Lesson 2
Now try other possibilities and check if they work: change the order of the assembly, invert ends on bulb, etc. Delete as appropriate and write a statement to support your observations:
The bulb lights... (only when the ends are correctly in order / whatever order the ends are
connected) because__________________________________
The order you assemble the circuit is/isn’t important because ______________________.
It is safer to assemble the circuit in the following order: first___________, then____________,
later_____________, finally________________ because _____________________________.
ReportingWrite a Report of the assembly according to the model and instructions provided by your teacher
Activity 4a) Watch the following internet presentation called ‘Building circuits’ and do the proposed exercises.
http://www.engineeringinteract.org/resources/siliconspies/flash/concepts/buildingcircuits.htm
b) Copy into your notebook the circuit symbols and their meaning.
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Ernest FERRER Basic electricity Activities. Lesson 2
c) Draw the circuit diagrams that worked in the activity and write the names of each symbol on the diagrams.
Activity 5Work orally with a partner. One has a list of electrical components and circuit symbols to represent them. The other has a description of each electrical component. Read the definition and be sure that you understand their meaning. Use a dictionary or ask your teacher if you don’t understand the
meaning of word.Read the definition aloud to your partner and he must select the proper name and symbol on his list. Order the answer from top to bottom. Once you have finished allow your partner to see the results and check together if they match properly.
6/15
Ernest FERRER Basic electricity Activities. Lesson 3
Lesson 3 Basic electric circuits
Activity 1Watch the Power Point presentation of a switch. Repeat the key words in bold as they appear on the screen. Copy the key words and the verbs into your notebook.Do the proposed exercises in the presentation
Activity 2Here you have 6 different switches, apparently identical from outside. Now, with your teacher help analyse each one: how many contacts you count? Have the contacts any particular name? How and when are these contacts in touch? What is the symbol for this switch? Look for examples of use around home.
Draw and fill an information table in landscape page view about switches according to what you have discovered
Switch Number of contacts
Possible positions &
default position
Symbol and contacts names How it works Example of use
One way (single)
Two ways
Reversing
Dual
Normally open. NO
Normally closed.NC
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Ernest FERRER Basic electricity Activities. Lesson 3
Now write one sentence for each kind of switch following the pattern suggested below:
1) A________________ switch has ___________ contacts. The contacts are called
_______________ and ________________. It has _________ possible positions,
being both/NO/NC the default position. This switch is used
for_______________________________. Its symbol is
2)
3)
4)
5)
6)
Finally play a guessing game with your partner. You have to read the description of any switch and he has to guess which switch it is. Swap roles each time a kind of switch is guessed correctly
8/15
Ernest FERRER Basic electricity Activities. Lesson 3
Activity 3Work with your partner in this activity. How to switch a bulb on or off from two places? Observe the proposed circuit diagrams and make a list of the materials needed using each method. The first is already done
2 one way switches serialCircuit diagram Material
A bulb
A battery,...
4 wires
2 single (one way) switches
2 one way switches parallelCircuit diagram Material
A bulb
A battery,...
2 two way switchesCircuit diagram Material
A bulb
A battery,...
9/15
Ernest FERRER Basic electricity Activities. Lesson 3
Think about the advantages and disadvantages of each possibility, about the length
and the quantity of wires used, the possible result if a switch breaks down the
freedom/restrictions you face when you switch from any 2 locations, etc.
Issue 2 one way switches serial
2 one way switches parallel
2 two way switches
Number of wires needed
How many combinations work out of 4?
If a switch breaks, the other switch...
To turn on a bulb we need to
To turn off a bulb we need to
Other
Now it’s time to check your predictions. Assemble the three circuits according to each diagram and check how they work. Rewrite your hypothesis and add any other observations you want.
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Ernest FERRER Basic electricity Activities. Lesson 3
Finally discuss with your partner and come to some conclusions on the topic using the structures below
1 way series switches
1 way parallel switches
2 way switches
circuit isbetter thanas good asworse than
1 way switches serial
1 way switches parallel
2 way switches
circuitcircuit usesmore wires thanas many wires asfewer wires than
circuit hasless/more restrictions thanthe same freedom asless/more freedom than
Because: (choose one possibility in each statement)
To turn a light on/off you need to have: both switches on/off OR any switch on/off OR you
can turn a light on and off from one switch whatever positions the other switch has.
If one switch breaks down... you can still run the circuit from the other switch / you can’t run
the circuit from the other switch.
Other...
1st conclusion
2nd conclusion
3rd conclusion
4th conclusion
ReportingWrite a Report of the three assemblies according to the model provided by your teacher.
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Ernest FERRER Basic electricity Activities. Lesson 3
Activity 4Work with your partner. Observe the circuit diagram for running a circuit from three locations. List the material needed.
Circuit diagram Material A bulb
A battery,...
Now assemble the circuit and list the instructions needed for assembling. You can revise lesson 2, activity 3 to help with your writing and use some of the verbs suggested below
Use some of the following connectives to order your instructions:
to start take / first you need to....
The circuit works on ____ combinations out of _____ total possible combinations.
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to start, first, second, then, after that, the next point is, the next thing to do is, finally, lastly,
connect, take, switch, check, fasten, screw, plug, need to...
Ernest FERRER Basic electricity Activities. Lesson 3
Now think about how to run a circuit from four locations. What do you need to add to the previous circuit? More wires, more 2 way switches, more reverse switches... How many of each?
I think we will need ____________________________________________________________
Check your predictions by assembling it. Finally write/complete the conclusion.
To run a circuit from 3 locations we need 2 ways switches and 1 reverse switch.
To run a circuit from 4 locations we need ________________________________________.
The circuit works on ____ combinations out of _____ total possible combinations.
For each new location we have to add ____________________________________________.
For each new location added to run the circuit the number of total possible combinations
increases by __________, and the circuit works on ____ combinations.
Draw the circuit diagram for a circuit running from 4 places.
ReportingWrite a Report of the assembly according to the model provided by your teacher.
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Ernest FERRER Basic electricity Activities. Lesson 3
Activity 5Watch, read, listen to and repeat the following internet presentation about different appliances in a circuit. Do the quiz associated with the presentation.
http://www.bbc.co.uk/schools/scienceclips/ages/6_7/electricity_fs.shtml
Copy the question and correct answer or complete sentence from the quiz
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
http://www.engineeringinteract.org/resources/siliconspies/flash/concepts/simplecircuits.htm
Now assemble a simple circuit with a motor and check if exchanging the ends of the motor or the ends of the battery affects the way the motor turns.
Repeat the assembly experiment using a buzzer and other electric components. Link the words according with your observations.
A bulb
A motor
A buzzer
A switch
A wire
A battery
An electrical bell
A/An___________
has polarity
has not polarity
When the direction of electricity affects the way an appliance works it is said that the appliance has polarity. Write the definition of polarity you have found in a monolingual dictionary.
Electrical polarity is ____________________________________________________________
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