NCERT Textbook - Science, Class 6, CBSE Class 6 Notes | EduRev

Created by: Sasi Rekha

Class 6 : NCERT Textbook - Science, Class 6, CBSE Class 6 Notes | EduRev

 Page 1


C K
CONTENTS
FOREWORD iii
A NOTE FOR STUDENTS vii
C H A P T E R    1
FOOD: WHERE DOES IT COME FROM? 1
C H A P T E R    2
COMPONENTS OF FOOD 8
C H A P T E R    3
FIBRE TO FABRIC 18
C H A P T E R    4
SORTING MATERIALS INTO GROUPS 26
C H A P T E R    5
SEPARATION OF SUBSTANCES 35
C H A P T E R    6
CHANGES AROUND US 46
C H A P T E R    7
GETTING TO KNOW PLANTS 52
C H A P T E R    8
BODY MOVEMENTS 66
C H A P T E R    9
THE LIVING ORGANISMS AND THEIR SURROUNDINGS 79
C H A P T E R    10
MOTION AND MEASUREMENT OF DISTANCES 95
C H A P T E R    11
LIGHT, SHADOWS AND REFLECTIONS 107
C H A P T E R    12
ELECTRICITY AND CIRCUITS 116
C H A P T E R    13
FUN WITH MAGNETS 125
Page 2


C K
CONTENTS
FOREWORD iii
A NOTE FOR STUDENTS vii
C H A P T E R    1
FOOD: WHERE DOES IT COME FROM? 1
C H A P T E R    2
COMPONENTS OF FOOD 8
C H A P T E R    3
FIBRE TO FABRIC 18
C H A P T E R    4
SORTING MATERIALS INTO GROUPS 26
C H A P T E R    5
SEPARATION OF SUBSTANCES 35
C H A P T E R    6
CHANGES AROUND US 46
C H A P T E R    7
GETTING TO KNOW PLANTS 52
C H A P T E R    8
BODY MOVEMENTS 66
C H A P T E R    9
THE LIVING ORGANISMS AND THEIR SURROUNDINGS 79
C H A P T E R    10
MOTION AND MEASUREMENT OF DISTANCES 95
C H A P T E R    11
LIGHT, SHADOWS AND REFLECTIONS 107
C H A P T E R    12
ELECTRICITY AND CIRCUITS 116
C H A P T E R    13
FUN WITH MAGNETS 125
C K
x
C H A P T E R    14
WATER 136
C H A P T E R    15
AIR AROUND US 147
C H A P T E R    16
GARBAGE IN, GARBAGE OUT 155
Page 3


C K
CONTENTS
FOREWORD iii
A NOTE FOR STUDENTS vii
C H A P T E R    1
FOOD: WHERE DOES IT COME FROM? 1
C H A P T E R    2
COMPONENTS OF FOOD 8
C H A P T E R    3
FIBRE TO FABRIC 18
C H A P T E R    4
SORTING MATERIALS INTO GROUPS 26
C H A P T E R    5
SEPARATION OF SUBSTANCES 35
C H A P T E R    6
CHANGES AROUND US 46
C H A P T E R    7
GETTING TO KNOW PLANTS 52
C H A P T E R    8
BODY MOVEMENTS 66
C H A P T E R    9
THE LIVING ORGANISMS AND THEIR SURROUNDINGS 79
C H A P T E R    10
MOTION AND MEASUREMENT OF DISTANCES 95
C H A P T E R    11
LIGHT, SHADOWS AND REFLECTIONS 107
C H A P T E R    12
ELECTRICITY AND CIRCUITS 116
C H A P T E R    13
FUN WITH MAGNETS 125
C K
x
C H A P T E R    14
WATER 136
C H A P T E R    15
AIR AROUND US 147
C H A P T E R    16
GARBAGE IN, GARBAGE OUT 155
W
hat did you eat at home
today? Find out what your
friend ate today. Did you eat
the same kind of food yesterday and
today? We all eat different kinds of food
at different times, isn’t it?
1.1 FOOD VARIETY
Activity 1
Ask your friends in the school about the
items they would be eating during a day.
See if you can also get this information
from friends staying in different states
of India. List all the items in your
notebook as given in Table 1.1, for as
many friends as possible.
Table 1.1 What do we eat?
e h t f o e m a N
d n e i r f / t n e d u t s
s m e t i d o o F
y a d a n i n e t a e
There seems to be so much variety
in the food that we eat. What are these
food items made of?
Think about rice
cooked at home. We take
raw rice and boil it in
water. Just two materials
or ingredients are needed to prepare a
dish of boiled rice.
On the other hand, some food items
are made with many ingredients. To
prepare vegetable curry, we need
different kinds of vegetables, salt, spices,
oil and so on.
Activity 2
Choose some of the items you listed in
Table 1.1 and try to find out what
ingredients are used to prepare these,
by discussing with your friends and
elders at home. List them in Table 1.2.
Some examples are given here. Add
some more items to this list.
Table 1.2 Food items and their
ingredients
m e t I d o o F s t n e i d e r g n I
i t o R / i t a p a h c a t t A r e t a w ,
l a D
/ l i o , t l a s , r e t a w , s e s l u P
e e h g s e c i p s ,
Food:
Where Does It Come From?
1
Page 4


C K
CONTENTS
FOREWORD iii
A NOTE FOR STUDENTS vii
C H A P T E R    1
FOOD: WHERE DOES IT COME FROM? 1
C H A P T E R    2
COMPONENTS OF FOOD 8
C H A P T E R    3
FIBRE TO FABRIC 18
C H A P T E R    4
SORTING MATERIALS INTO GROUPS 26
C H A P T E R    5
SEPARATION OF SUBSTANCES 35
C H A P T E R    6
CHANGES AROUND US 46
C H A P T E R    7
GETTING TO KNOW PLANTS 52
C H A P T E R    8
BODY MOVEMENTS 66
C H A P T E R    9
THE LIVING ORGANISMS AND THEIR SURROUNDINGS 79
C H A P T E R    10
MOTION AND MEASUREMENT OF DISTANCES 95
C H A P T E R    11
LIGHT, SHADOWS AND REFLECTIONS 107
C H A P T E R    12
ELECTRICITY AND CIRCUITS 116
C H A P T E R    13
FUN WITH MAGNETS 125
C K
x
C H A P T E R    14
WATER 136
C H A P T E R    15
AIR AROUND US 147
C H A P T E R    16
GARBAGE IN, GARBAGE OUT 155
W
hat did you eat at home
today? Find out what your
friend ate today. Did you eat
the same kind of food yesterday and
today? We all eat different kinds of food
at different times, isn’t it?
1.1 FOOD VARIETY
Activity 1
Ask your friends in the school about the
items they would be eating during a day.
See if you can also get this information
from friends staying in different states
of India. List all the items in your
notebook as given in Table 1.1, for as
many friends as possible.
Table 1.1 What do we eat?
e h t f o e m a N
d n e i r f / t n e d u t s
s m e t i d o o F
y a d a n i n e t a e
There seems to be so much variety
in the food that we eat. What are these
food items made of?
Think about rice
cooked at home. We take
raw rice and boil it in
water. Just two materials
or ingredients are needed to prepare a
dish of boiled rice.
On the other hand, some food items
are made with many ingredients. To
prepare vegetable curry, we need
different kinds of vegetables, salt, spices,
oil and so on.
Activity 2
Choose some of the items you listed in
Table 1.1 and try to find out what
ingredients are used to prepare these,
by discussing with your friends and
elders at home. List them in Table 1.2.
Some examples are given here. Add
some more items to this list.
Table 1.2 Food items and their
ingredients
m e t I d o o F s t n e i d e r g n I
i t o R / i t a p a h c a t t A r e t a w ,
l a D
/ l i o , t l a s , r e t a w , s e s l u P
e e h g s e c i p s ,
Food:
Where Does It Come From?
1
SCIENCE 2
Activity 3
Let us take the food items listed earlier
and try to find out where they come from
— the ingredients and their sources.
Some examples are shown in Table 1.3.
Fill in the blanks in Table 1.3 and add
more examples to this list.
What do we find? Do we find some ingredients common
for different food items? Discuss in class.
So, where do these ingredients come from?
1.2 FOOD MATERIALS AND SOURCES
It may be easy for us to guess the sources of some of the
ingredients that we listed in Table 1.2. Fruits and
vegetables, for instance. Where do they come from? Plants,
of course! What are the sources of rice or wheat? You may
have seen paddy or wheat fields with rows and rows of
plants, which give us these grains.
And then, there are food items like milk, eggs, meat,
chicken, fish, prawns, beef, pork and such others, which
come from animals.
Table 1.3 Ingredients used to
prepare food items and
their sources
m e t I d o o F s t n e i d e r g n I s e c r u o S
i l d I e c i R t n a l P
l a d d a r U
t l a S
r e t a W
n e k c i h C
y r r u c
n e k c i h C l a m i n A
s e c i p S
/ l i O e e h g
/ s t n a l P
s l a m i n A
r e t a W
r e e h K k l i M l a m i n A
e c i R t n a l P
r a g u S
Page 5


C K
CONTENTS
FOREWORD iii
A NOTE FOR STUDENTS vii
C H A P T E R    1
FOOD: WHERE DOES IT COME FROM? 1
C H A P T E R    2
COMPONENTS OF FOOD 8
C H A P T E R    3
FIBRE TO FABRIC 18
C H A P T E R    4
SORTING MATERIALS INTO GROUPS 26
C H A P T E R    5
SEPARATION OF SUBSTANCES 35
C H A P T E R    6
CHANGES AROUND US 46
C H A P T E R    7
GETTING TO KNOW PLANTS 52
C H A P T E R    8
BODY MOVEMENTS 66
C H A P T E R    9
THE LIVING ORGANISMS AND THEIR SURROUNDINGS 79
C H A P T E R    10
MOTION AND MEASUREMENT OF DISTANCES 95
C H A P T E R    11
LIGHT, SHADOWS AND REFLECTIONS 107
C H A P T E R    12
ELECTRICITY AND CIRCUITS 116
C H A P T E R    13
FUN WITH MAGNETS 125
C K
x
C H A P T E R    14
WATER 136
C H A P T E R    15
AIR AROUND US 147
C H A P T E R    16
GARBAGE IN, GARBAGE OUT 155
W
hat did you eat at home
today? Find out what your
friend ate today. Did you eat
the same kind of food yesterday and
today? We all eat different kinds of food
at different times, isn’t it?
1.1 FOOD VARIETY
Activity 1
Ask your friends in the school about the
items they would be eating during a day.
See if you can also get this information
from friends staying in different states
of India. List all the items in your
notebook as given in Table 1.1, for as
many friends as possible.
Table 1.1 What do we eat?
e h t f o e m a N
d n e i r f / t n e d u t s
s m e t i d o o F
y a d a n i n e t a e
There seems to be so much variety
in the food that we eat. What are these
food items made of?
Think about rice
cooked at home. We take
raw rice and boil it in
water. Just two materials
or ingredients are needed to prepare a
dish of boiled rice.
On the other hand, some food items
are made with many ingredients. To
prepare vegetable curry, we need
different kinds of vegetables, salt, spices,
oil and so on.
Activity 2
Choose some of the items you listed in
Table 1.1 and try to find out what
ingredients are used to prepare these,
by discussing with your friends and
elders at home. List them in Table 1.2.
Some examples are given here. Add
some more items to this list.
Table 1.2 Food items and their
ingredients
m e t I d o o F s t n e i d e r g n I
i t o R / i t a p a h c a t t A r e t a w ,
l a D
/ l i o , t l a s , r e t a w , s e s l u P
e e h g s e c i p s ,
Food:
Where Does It Come From?
1
SCIENCE 2
Activity 3
Let us take the food items listed earlier
and try to find out where they come from
— the ingredients and their sources.
Some examples are shown in Table 1.3.
Fill in the blanks in Table 1.3 and add
more examples to this list.
What do we find? Do we find some ingredients common
for different food items? Discuss in class.
So, where do these ingredients come from?
1.2 FOOD MATERIALS AND SOURCES
It may be easy for us to guess the sources of some of the
ingredients that we listed in Table 1.2. Fruits and
vegetables, for instance. Where do they come from? Plants,
of course! What are the sources of rice or wheat? You may
have seen paddy or wheat fields with rows and rows of
plants, which give us these grains.
And then, there are food items like milk, eggs, meat,
chicken, fish, prawns, beef, pork and such others, which
come from animals.
Table 1.3 Ingredients used to
prepare food items and
their sources
m e t I d o o F s t n e i d e r g n I s e c r u o S
i l d I e c i R t n a l P
l a d d a r U
t l a S
r e t a W
n e k c i h C
y r r u c
n e k c i h C l a m i n A
s e c i p S
/ l i O e e h g
/ s t n a l P
s l a m i n A
r e t a W
r e e h K k l i M l a m i n A
e c i R t n a l P
r a g u S
FOOD: WHERE DOES IT COME FROM? 3
you ever eaten
pumpkin flowers
dipped in rice
paste and fried?
Try it!
Some plants
have two  or more
edible (eatable)
parts. Seeds of
mustard plants
give us oil and
the leaves are
used as a
vegetable. Can
you think of the
different parts of a banana plant that
are used as food?  Think of more
examples where many parts of a single
plant are used as food.
Activity 4
From all the food items you have listed
in Table 1.3, choose those items whose
ingredients are obtained from plants.
Which part of a plant? Identify these
and list the food items and plant parts
as shown in Table 1.4.
What do we conclude from Activity
3? Plants are the sources of food
ingredients like grains, cereals,
vegetables and fruits. Animals provide
us with milk, meat products and eggs.
Cows, goats and buffaloes are some
common animals which give us milk.
Milk and milk products like butter,
cream, cheese and curd are used all over
the world. Can you name some other
animals which give us milk?
1.3 PLANT PARTS AND ANIMAL
PRODUCTS AS FOOD
Plants are one source of our food. Which
parts of a plant are these?
We eat many leafy vegetables. We eat
fruits of some plants. Sometimes roots,
sometimes stems and even flowers. Have
Paheli wants to know if any of our
food comes from sources other
than plants and animals.
Table 1.4  Plant parts as food
 
t n a l p h t i w m e t i d o o F
e c r u o s r o j a m e h t s a
e c r u o s / s t n e i d e r g n I s e v i g h c i h w t r a p t n a l P
t n e i d e r g n i e h t s u
y r r u c l a j n i r B . 1 l a j n i r B t i u r F
) r e h t o y n a ( e c i p s s a i l l i h C t i u r F
, d r a t s u m , t u n d n u o r g m o r f l i O
t n a l p r e h t o y n a , n a e b y o s
d e e S
. 2
. 3
Bud
Stem
Roots
Flower
Leaf
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