What is force?
Force means to push or pull
something.
Which other two actions have been
mentioned that require force?
To stop something and to change the
direction also requires force
ØQ1. How was force applied on the balloon?
Blowing with the mouth so the shape
of the balloon changed.
ØQ2. How was force applied on the table and chair?
Table was pushed and pulled, chair
was lifted.
ØReinforce the definition of force
–Force is a push or a pull. It can change
the direction of a moving object.It can stop a moving object.It can also change
the shape of an object
Q4.In the above actions did the
objects on which force was being applied show any movement
or change its shape?
Yes when we
apply force on an object and there is movement of object then it is said that
some work has been done. Today we will learn what is work and when can we say
that work is done.Work is said to be done only if the force exerted on an
object moves that object form its position. i.e there is displacement of the
object.
Give some examples of work where the
object moves from its position?
(pushing a trolley, stitching, carrying
things etc.)
Why do we eat food?
(Because it gives us energy)
What does the word solar mean?
Solar means the energy related to the
Sun
ØWhat are the things that are important for us to survive on
earth.
(air,water, food and light)
ØHow the sunlight is helpful to the plants.(it helps them to
grow and toprepare food)
Photosynthesis isthe process by
which green plants use carbon dioxide in the air and water
and minerals from the soil to
produce their own food in the presence of sunlight. Sunlight is absorbed with
the help of chlorophyll, a green pigment present in the leaves. The food
prepared by the leaf is stored in different parts of the plant and oxygen gas
is given out in the process
Hence it is not only helpful to
plants and animals but to all the living creatures on the earth
he rainwater that is stored in the
dam is used as a source of energy to produce electricity.
The water is held behind a dam,
forming an artificial lake, or reservoir. The water is released from the dam
which spins the blades of a giant turbine. The turbine is connected to the
generator that makes electricity as it spins.This energy is also called hydro
energy.
1. What do we do to regain our lost
energy?
Eat the right kind of food and rest
enough.
Ø
What food is the right kind of
food?A balanced diet.
ØDo we eat them raw?
Some are eaten raw while some are
cooked.
ØWhat are the different methods of cooking?
Boiling, roasting, frying steaming.
ØWhat is the important thing required
for cooking?
Cooking gas
ØDo people in the rural areas also use gasfor cooking?
No, they burn wood.
ØWhat does the blue colour on the globe denote?
The part of the earth covered with
water.
ØHow much of the earth is covered with water?
Three fourth of the earth is covered
with water.
the heat
generated from the earth is called geothermal energy
ØWhy do we need these batteries?For the functioning of all
battery operated things.
ØWhat do we do when a battery operated toy or a watch stops
working?
We change the battery.
Ø
What do we do when our mobile screen
or laptop screen goes blank
at the end of the day?
We recharge it using batteries
Øthat all battery operated things will stop working because
they
function with the energy stored in
the batteries.
Øthat batteries store energy in them which can be utilized
whenever
we need energy to make use of things
that are battery operated.
(if possible show the different
types of batteries)
