Royal Buckingham International School
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Grade 2 Chapter 3 Characteristics of materials
Q 1 What things are made from?
A : Things are made up of materials.
Q 2 How can we group objects?
A: We can group objects by their size, shape, colour and texture.
Q 3 Why is it important to group objects?
A: Grouping objects make it easier for us to find them, when we need them.
Q 4 What is physical property of a material?
A: Properties that help us to identify and group things are called physical properties of material.
Q 5 Name some physical properties which help us to group things?
A: Besides colour, shape and size there are some more properties. Hardness, strength, flexibility, ability to
float / sink in water, magnetic / non magnetic, heat / electrical / sound - conductors / insulators,
transparent / translucent / opaque, boiling / freezing / melting point, waterproof, stretch / non stretch,
absorbent / non absorbent, permeable / impermeable etc.
Q 6 What must we know when choosing materials for an object?
A: a) Use of object: what the object is used for
b) Properties of object: What properties the objects must have to do the job
c) Suitable material: What materials have these properties
Q 7 What happen if we use wrong materials to make things? Give examples.
A : Things will fail in their jobs. Glass shoes and paper table.
Q 8 Name types of materials and write their uses.
Materials
Man made
defination
Which are man made
Natural
We get from ground, plants and
animals.
Example
Plastics are made from
crude oil
Q 9 What are waterproof materials?
A : Waterproof materials like plastics keeps us dry on wet days.
Q 10 Give example of man made cloth.
A: Nylon is man made cloth.
Uses
to make boxes, bottles, table,
chair and toys.
Q 11 Give examples of materials that we get from ground write their uses.
Material
Metal
Clay
Glass
Rocks
Uses
to make tools and utensils.
to make pots, cups, plates and tiles.
to make window panes, lenses, bottles and glasses.
to make houses and roads.
Q 12 Give examples of materials that we get from plants and write their uses.
Material
Wood
Uses
to make paper and furniture.
Sources
Trees
Cotton
Rubber
To make clothes
to make tyres, ballons ,erasers and toys.
Cotton plant
Rubber plant
Q 13 Give examples of materials that we get from animals and write their uses.
Material
Leather
Wool
Silk
Source
Animal’s skin
sheep
Silk moth
Uses
to make belts, clothes, bags and shoes
To make woollen clothes
To make silk clothes
Q 14 Make a table to show different physical propetries with examples.
Property
Hardness
Definition
Ability to withstand scratches
Strenght
(strong)
Flextbility
Ability to support heavy loads without
breaking or tearing
Ability to bend easily without breaking
and to return to its original position
Property
Transparent
Translucent
Opaque
Example
Glass can scratch wood and
plastic
Steel is used to make bridges
Opposite
Softness
Fishing rod can pull out a big fish
out of water without breaking
Non flexible
Definition
Materials that allow light to pass through them
Materials that allow little light to pass through them
Materials that do not allow light to pass through them
Property
Heat conductors
Heat insulators
Definition
Materials that allow heat to pass through them
Weak
Example
Clear glass, plastic, water
Frosted glass,tracing paper
Wood, metal
Example
Metals are used to make cooking
utensils
Materials that do not allow heat to pass through handles of cooking utensils are
them
made from plastic / wood.
Property
Electical conductors
Electrical insulators
Definition
Materials that allow electricity to pass
through them
Materials that do not allow electricity to pass
through them
Property
Sound conductors
Definition
Materials that allow sound to pass through them
Sound insulators
Materials that do not allow sound to pass
through them
Example
Metals are used to make electrical
cables
Platics are used to cover electrical
cables, switches and plugs
Example
Fire engine, ambulence, siren,
alarm clock
Carpets, double gazed windows,
heavy curtains
Property
Magnetic
Non magnetic
Definition
Materials which are attracted by magnet
Materials which are not attracted by magnet
Example
Iron, steel, nickle and cobalt
Wood, plastic, rubber and cloth
Property
Sink in water
Float in water
Definition
Materials which fall to the bottom of the water
Materials which stay on top of the water
Example
An anchor sinks in water
A ship floats in water
Property
Absorbent
Non absorbent
Property
Boiling point
Melting point
Freezing point
Definition
Which materials absorb water
Which materials do not absorb water
Definition
Temperature at which a liquid changes to a gas
Temperature at which a solid changes to a liquid
Temperature at which a liquid changes to a solid
Example
Sponge, towel and paper towel
Glass, plastic and rubber
Example
Pure water boils at 100 degree C
Ice melts at 0 degree C
Pure water freezes at 0 degree C
( The freezing and melting point of an objects are same. )
Q 15 Complete the chart given below. Choose any object and tell why and what material you will choose
for that object. One example has been given.
Name of object
Boots
Use of object
To wear
Properties of object
Soft, flexible, fairly strong
Suitable material
Plastic, rubber
Q 16 Tick the physical properties of the materials in the given box.
Material/
properties
Hard
Soft
Strong
Weak
Flexible
Non flexible
Sink in
water
Float in
water
Heat
conductor
Heat
insulator
Electrical
conductor
Electrical
insulator
Magnetic
Non
magnetic
Transparent
Translucent
Opaque
Permeable
Non
permeable
Absorbent
Non
absorbent
Stretchable
Non
stretchable
Plastic
Rubber
Glass
Clay
Metal
Cotton
Leather
Wood
Grade 1 Chapter 3 Sorting and using materials
Fill in the blanks with suitable answer.
1. Things are made up of ________________.
2 ___________ is used to make paper and furniture.
3 __________ is used to make tyres, ballons ,erasers and toys.
4 ___________ are used to make tools and utensils.
5 ___________are used to make boxes, bottles, table, chair and toys.
6 ___________ is used to make pots, cups, plates and tiles.
7 ____________ is used to make shoes, clothes, belts and bags.
8 ___________________materials keeps us dry on wet days.
9 Things fail in their jobs, if we use _______materials to make things.
10 There are ___________ types of materials.
True or false
1.
2.
3.
4.
5.
6.
7.
8.
9.
10
Things are not made up of materials.
Wood, metal , plastic, rubber, glass and clay are materials.
Wood is used to make tyres, ballons ,erasers and toys.
Metals are used to make tools and utensils.
Plastics are used to make boxes, bottles, table, chair and toys.
Leather is used to make pots, cups, plates and tiles.
Metals are used to make shoes, clothes, belts and bags.
Wood is used to make paper and furniture.
Waterproof materials keeps us dry on wet days.
Things will do their jobs if we use wrong materials to make things.
Match the following by putting correct number in the given box.
1 Wood
Shoes
2 Metal
Waterproof
3 Things
Pots and tiles
4 Plastics
Waterproof
5 Rubber
Toys
6 Clay
Tools and utensils
7 Leather
8 Umbrella
Tyres
Paper
Here are given some names of objects.Put them in the right material box . You can use one worn more
than one time.
clothes, belts, paper, furniture, tyres, ballons , utensils, boxes, erasers, toys, tools, bottles, table, chair,
toys, plates and tiles, shoes, umbrella, rain coat, pots, cups, Vase, mirror and bags.
Wood
Metal
Plastic
Rubber
Glass
Leather
Waterproof
Clay