Name five objects which can be made from wood.SOLUTION:
Select those objects from the following which can shine : Glass bowl, plastic toy, steel spoon, cotton shirt.SOLUTION:
Glass bowl and steel spoon.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.
State whether the statements given below are true or flase.
(i) Stone is transparent while glass is opaque.
(ii) A notebook has lustre while 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.
Given below are the names of some objects and materials.
Water, basketball, orange, sugar, globe, apple and earthen pitcher.
Group them as
(A) round shaped and other shapes
(B) eatables and non-eatables.
(i) Round shaped : Basketball, apple, orange, globe, earthen pitcher Other shapes : Water, sugar
(ii) Eatables : Water, orange, sugar, apple Non-eatables : Basket ball, globe, earthen pitcher.
List all the items known to you that float on water. Check and see if they will float on oil or kerosene.SOLUTION:
(i) Items which float on water –
Paper, wood, wax, oil, ice, plastic mug, boat, ship, plastic bottle, thermocol.
(ii) Items that float on oil –
Plastic, wax, thermocol, paper.
(iii) Items that float on kerosene –
Paper, thermocol, plastic mug, plastic bottle.
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
(a) Baby–only living being, other things are non-living.
(b) Boat–all others are flowers
(c) Sand–all others are metals.
(d) Sand insoluble in water, other things are soluble in water.