4. 1
All objects around us, such as your body or the stars, have
electrical charges.
- Types of electrical charges:
Objects around us usually have the same number of positive and
negative charges, so they are electrically neutral.
Positive
Negative (This moves from place to place)
Work in groups. Read and make blue and red paper balls.
5. 1
Team work. Listen to your teacher and make positively charged
objects, negatively charged objects or electrically neutral objects.
6. 1
- In your object, three negative charges (electrons) are moving
around while only two positive charges are found in it.
- In your object, you can find seven protons (positive charges)
and you can see that four electrons are moving around.
- One electron is moving and one proton isn’t moving.
- Make a positively charged object and explain why it is so.
- Make an electrically neutral object and explain why it is so.
- Make a negatively charged object and explain why it is so.
Team work. Listen to your teacher and make positively charged
objects, negatively charged objects or electrically neutral objects.
In general, objects are electrically neutral because they have no
charges in them.
Is the following statement true or false? Explain why.
7. 1
Work in groups. Follow these instructions and write about the
results of this experiment.
8. 1
Work in pairs. Follow your teacher’s instructions to do an
experiment with two balloons, string and a cloth. Explain the results.
Work in groups. Follow these instructions and write about the
results of this experiment.
9. 1
- Objects with the same charge repel.
- Objects with opposite charges attract.
Look at these pictures, watch these videos and write about
how you can use this in your invention.
10.
11. 2
An electric current is the flow of electrical charges through
materials.
Electrical
charges
Strong electric
current
Electricity
Electricity in an
electric current can
be transformed into
other forms of
energy.
Read, look, watch the video and discuss.
12. 2
Materials can be:
- Conductors: Electrical charges can move freely through
these materials.
- Insulators: Electrical charges can’t move through these
materials.
Read and write a list of three conductors and three insulators.
13. 2
Materials can be:
- Conductors: Electrical charges can move freely through
these materials.
- Insulators: Electrical charges can’t move through these
materials.
Read and write a list of three conductors and three insulators.
Water is also a conductor of electricity. People are made up
mainly of water, so we are conductors of electricity too. For this
reason, it can be very dangerous to use electrical appliances
near water.
When you are going to use an electrical appliance, make sure
that you, the appliance and everything around you are all dry.
Cooperative reading. Read and speak about security at home.
14.
15. 1-2-group technique. Match each part of an electric circuit and
their definitions.
3
This provides the electricity. The electrical charges go from one
terminal to the other.
This transforms the electrical energy into other type of energy,
such as kinetic or light energy.
Cables transport the
electricity. They are
connecting wires, usually
made of copper, wrapped
in plastic covering.
It controls the flow of electricity by closing or opening the circuit.
16. 1-2-group technique. Match each part of an electric circuit and
their definitions.
3
This provides the electricity. The electrical
charges go from one terminal to the other.
This transforms
the electrical
energy into other
type of energy,
such as kinetic or
light energy.
Cables transport the electricity. They are
connecting wires, usually made of copper,
wrapped in plastic covering.
It controls the
flow of
electricity by
closing or
opening the
circuit.
17. 3
Explain to your partner what the difference between an open and
closed circuit is.
18.
19. 4
A lot of electrical appliances are connected to the electrical grid
through a socket. Every socket is connected by cables to a
national grid.
A national grid gives you the electricity created in power plants.
Read. Where does electricity come from?
20. 4
In groups, write a list of appliances connected to the electrical grid.
The group with the longest list wins.
A lot of electrical appliances are connected to the electrical grid
through a socket. Every socket is connected by cables to a
national grid.
A national grid gives you the electricity created in power plants.
Read. Where does electricity come from?
21. 4
Read and say if these power plants practise sustainable
development.
Fossil fuels, uranium or
plutonium are used to
heat up the water. This
produces steam, that
moves a turbine which is
connected to a
generator. (Click image to watch video)
Wind moves a
turbine which is
connected to a
generator.
Water moves a
turbine, which is
connected to a
generator.
Heat or light from
the Sun heat water.
The water boils and
produce steam, that
moves a turbine.
THERMAL
POWER
PLANTS
WIND
POWER
PLANTS
HYDROELECTRIC
POWER PLANTS
SOLAR
POWER
PLANTS
22. 4
Debate. Divide the class into four groups and each group will
belong to a power plant. Which one causes the most pollution?
THERMAL POWER
PLANTS
WIND
POWER
PLANTS
HYDROELECTRIC POWER PLANTS
SOLAR
POWER
PLANTS
23. 4
BLACKOUT!
At this moment, there is a big storm in Carmona. Lightning is lightning up
the sky, and thunder is roaring above the city. Finally, the storm has caused a
blackout, making Carmona go dark.
Some children are scared. Most of children are lightening some candles
and turning on their torches. We are having lots of fun! But Pepito isn’t…
Feeling better, Pepito is trying to turn on the TV, bit it doesn’t work. He
soon realizes that many other things don’t work without electricity. His
tablet’s battery has run out and there is no way to charge it. Life without
electricity is definitely different…
As there’s nothing we can do about it, Pepito is reading a book by the
light of a torch. Finally, Pepito is enjoying the blackout!
1. What is a blackout?
2. What caused the blackout in Carmona?
3. What electrical device is working during the blackout? How?
4. How is Pepito feeling in the end?
5. Draw a circuit diagram of Pepito’s torch.
Read and answer.
24.
25. 5
A magnet is an object that attracts other objects made of
magnetic metals.
This attraction is called magnetism.
Magnets have two areas, called poles:
- Opposite poles attract.
- Same poles repel.
Read and answer: What can we use magnetic forces for?
NATURAL MAGNET ARTIFICIAL MAGNET
Magnetite Things made of magnetic metals.
magnetic
forces
26. 5
A magnet is an object that attracts other objects made of
magnetic metals.
This attraction is called magnetism.
Magnets have two areas, called poles:
- Opposite poles attract.
- Same poles repel.
Read and answer: What can we use magnetic forces for?
NATURAL MAGNET ARTIFICIAL MAGNET
Magnetite Things made of magnetic metals.
magnetic
forces
Write false sentences to confuse your classmates. Then,
correct your partner’s sentences.
27. 5
The Earth behaves like a giant
magnet and its magnetic poles
are found near the North Pole
and the South Pole.
However, the magnetic poles of
the Earth are opposite to the
geographic poles.
Read and explain to your partner.
north
magnetic
pole
South
magnetic
pole
28. 5
The Earth behaves like a giant
magnet and its magnetic poles
are found near the North Pole
and the South Pole.
However, the magnetic poles of
the Earth are opposite to the
geographic poles.
Read and explain to your partner.
north
magnetic
pole
South
magnetic
pole
Work in groups. The needle of a compass is a magnet and its red
part is its north magnetic pole. Why do you think it is used to
orient ourselves?
30. 5
Some animals can notice the Earth’s poles with no compass. This
is very important for migration.
Dictation. Write and discuss.
31. 5
- Write 150 words at least.
- Use linkers: First, first of all, to start with, second, third, later, after that,
however, instead of, because, in addition, also, too, finally, in conclusion…
- Imagine your invention is working, so you can use Present Continuous:
Think of your invention, describe it in detail and draw it.
SUBJECT VERB
TO BE
(am,
are, is)
OBJECTS AND
COMPLEMENTS
SUBJECT
OBJECTS
& COMP.
?
SUBJECT
AFFIRMATIVE
NEGATIVE
INTERROGATIVE
Example: Magnets are attracting metallic objects.
Example: Magnets aren’t attracting pencils and rubbers.
Example: Are magnets attracting metallic objects?
-ing
neg. TO BE
(am not,
aren’t, isn’t)
VERB
OBJECTS AND
COMPLEMENTS-ing
TO BE
(am,
are, is)
VERB -ing