Sorting of materials
Question & Answer
Q.1: Name five objects which can be made from wood.
Ans : 1. Chair
2. Table
3. Sofa
4. Pencil
5. Door
Q.2: Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt.
Ans : Glass bowl and steel spoon.
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.
Q.4: State whether the statements given below are
(i) Stone is transparent, while glass is opaque. (False)
(ii) A notebook has lustre, while an 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, basketball, orange, sugar, globe, apple, and earthen pitcher Group them as:
(a) Round shaped and other shapes
(b) Eatables and non-eatables
Ans : (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
Q.6 List all items known to you that float on water. Check and see if they will float on oil or kerosene.
Ans : 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.
7. Find the odd one out from the following:
a) Chair, Bed, Table, Baby, Cupboard
b) Rose, Jasmine, Boat, Marigold, Lotus
c) Aluminum, Iron, Copper, Silver, Sand
d) Sugar, Salt, Sand, Copper sulphate
Solution:
a) Baby – others are made up of wood
b) Boat – others are flowers
c) Sand – others are metals
d) Sand – others are soluble in water
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