EVENTS CONVENT HIGH SCHOOL
29/01/2021
CLASS-6 SLOT-2
Chapter-4 science
sorting materials into groups
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Q. 1. Name five objects which can be made from
wood.
Ans.
(i) Table
(ii) Chair
(iii) Doors
(iv) Boat
(v) Bed
Q.2. Select those objects from the following which
shine:
Glass bowl, plastic
toy, steel spoon, cotton shirt
Ans. Glass bowl and
steel spoon are shining objects.
Q.3. Match the objects given below with the
materials from which they could be made. Remember, an object could be made from more than one material and a given
material could be used for making many objects.
(i) Stone is
transparent, while glass is opaque. False
(ii) A notebook has
lustre while eraser does not False
(iii) Chalk dissolves
in water. False
(iv) A piece of wood
floats on water. True
(v) Sugar does not
dissolve in water. False
(vi) Oil mixes with
water. False
(vii) Sand settles
down in water. True
(viii) Vinegar
dissolves in water. True
Q. 5. Given below are the names of some
objects and materials:
Water, basket ball, orange, sugar, globe,
apple and earthen pitcher Group them as:
Ans. (a) (i) Round
shaped: Basket ball, apple, orange, globe, earthen pitcher.
(ii) Other shapes:
Water, sugar.
(b) (i) Eatables:
Water, orange, sugar and apple.
(ii) Non-eatables:
Basket ball, globe and earthen pitcher.
VERY SHORT ANSWER TYPE QUESTIONS
1. Why do we need to
group materials? Give one reason.
Ans: We often group
materials for our convenience. It helps to describe their properties.
2. Suggest two bases on which we can group
objects.
Ans:(i) Material used
in making the object, e.g. wood or metal/plastic.
(ii) Material of the
object is soft or hard, or substance is soluble or insoluble in water.
3. Is a substance
which can be compressed soft or hard?
Ans: Soft.
4. Select a lustrous
material out of the following substances:
Ans: Aluminium.
5. Which material is
generally used for making pens?Wood, aluminium, plastic, cotton
Ans:Plastic or metal.
SHORT ANSWER TYPE QUESTIONS
1. Write any four properties of materials.
Ans:
(a) Appearance
(b) Hardness
(c) Solubility
(d) Float or sink in
water
(e) Transparency
2. Why is a tumbler not made with a piece of cloth?
Ans: We use tumblers
made of glass, plastic and metal to keep a liquid. These substances can hold a
liquid.
A tumbler made of
cloth cannot hold a liquid because:
(i) Cloth piece is not
hard enough to hold liquids and
(ii) Cloth piece has
very minute pores through which the’liquid oozes out.
3. What are the similarities between iron, copper
and aluminium?
Ans:(a) They all have
lustre,
(b) They are all
metals,
(c) They are hard.
4. Mention some materials which are made up of
paper.
Ans: Books, notebooks,
newspapers, toys, calendars, etc.
5. Why is water important for our body?
Ans: Water can
dissolve a large number of substances, so it is needed by the body. It is also
major part of our body cells.
LONG ANSWER TYPE QUESTIONS
1. ‘Grouping of
objects helps the shopkeeper.’ Justify the statement.
Ans: Proper grouping
of objects helps shopkeeper in the following ways:
(i) He can locate the
required object easily and quickly.
(ii) He can easily
come to know what stocks are going to finish and he should purchase them for
his customers.
2. Describe an
experiment to prove that water is transparent.
Ans: Take a beaker
half-filled with clean water. Put a coin in beaker of water.
Place the beaker
undisturbed for a few minutes where enough light is present. Now, observe the
coin immersed in water from the top of the beaker. Are you able to see the
coin? You can clearly see the coin immersed in water. This proves that water is
a transparent liquid.
Draw
3. Write an experiment
to show that our palm is translucent.
Ans: Cover the glass
of a torch with your palm at a dark place. Switch on the torch and observe from
the other side of palm. We see that the light of torch passes through palm but
not clearly. This experiment shows that our palm becomes translucent when a
strong beam of light passes through it.
Draw
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Thank your for your valuable responce.
Mrfarooqui