Goa Board Class 6 Solutions for Science – Sorting Materials into Groups (English Medium)
Page No. 33:
Question 1:
Name five objects which can be made from wood.
Solution:
Five objects that can be made from wood are:
(i) Table
(ii) Chair
(iii) Bed
(iv) Door
(v) Bullock cart
Question 2:
Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Solution:
Glass bowl and steel spoon
Question 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.
Objects | Materials |
Book | Glass |
Tumbler | Wood |
Chair | Paper |
Toy | Leather |
Shoes | Plastics |
Solution:
Objects | Materials |
Book | Paper |
Tumbler | Glass, plastic |
Chair | Wood, plastic |
Toy | Wood, paper, plastic |
Shoes | Leather |
Question 4:
State whether the statements given below are ‘True’ or ‘False’.
(i) Stone is transparent, while glass is opaque.
(ii) A notebook has lustre, while an eraser does not.
(iii) Chalk dissolves in water.
(iv) A piece of wood floats on water.
(v) Sugar does not dissolve in water.
(vi) Oil mixes with water.
(vii) Sand settles down in water.
(viii) Vinegar dissolves in water
Solution:
(i) Stone is transparent, while glass is opaque. (False)
Reason: An object which allows light to pass through it completely is called transparent ex. glass. An object that does not allow light to pass through it is called opaque ex. stone.
(ii) A notebook has lustre, while an eraser does not. (False)
Reason: Both note book and eraser do not have lustre, they are non-lustrous.
(iii) Chalk dissolves in water. (False)
Reason: Chalk is insoluble in water.
(iv) A piece of wood floats on water. (True)
Reason: Wood is less dense than water and has air spaces in it so it floats on water.
(v) Sugar does not dissolve in water. (False)
Reason: Sugar is soluble in water.
(vi) Oil mixes with water. (False)
Reason: Oil is immiscible in water.
(vii) Sand settles down in water. (True)
Reason: Sand is heavier than water so it settles down.
(viii) Vinegar dissolves in water. (True)
Page No. 34:
Question 5:
Given below are the names of some objects and materials:
Water, basket ball, orange, sugar, globe, apple, and earthen pitcher
Group them as:
(a) Round shaped and other shapes
(b) Eatables and non-eatables
Solution:
(a) Round-shaped: Basketball, orange, globe, apple, earthen pitcher
Other shapes: Water, sugar
(b) Eatables: Water, orange, sugar, apple
Non-eatables: Basketball, globe, earthen pitcher
Question 6:
List all items known to you that float on water. Check and see if they will float on oil or kerosene.
Solution:
Some items that float on water are listed below:
1. Plastic bottle
2. Piece of paper
3. Piece of sponge
4. Piece of thermocol
5. Wood
6. Bamboo
7. Plastic ball
8. Cork
However, none of these items floats on oil or kerosene.
Question 7:
Find the odd one out from the following:
(a) Chair, Bed, Table, Baby, Cupboard
(b) Rose, Jasmine, Boat, Marigold, Lotus
(c) Aluminium, Iron, Copper, Silver, Sand
(d) Sugar, Salt, Sand, Copper sulphate
Solution:
(a) Baby
Reason: Baby is a living being whereas others are non-living objects.
(b) Boat
Reason: Boat is made from wood whereas the other three are flowers.
(c) Sand
Reason: Sand is not a metal whereas other three are metals.
(d) Sand
Reason: Sand is insoluble in water whereas the other three are soluble in water.