Exercises
1. Name five objects which can be made from wood.
Answer: Chair, Table, Door, pencil, Box
2. Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton, shirt
Answer: Glass bowl, 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.
Answer:
4. State whether the statements given below are True or False.
i. Stone is transparent, while glass is opaque.
Answer: False
ii. A notebook has lustre while eraser does not.
Answer: False
iii. Chalk dissolves in water.
Answer: False
iv. A piece of wood floats on
Answer: True
v. Sugar does not dissolve in water.
Answer: False
vi. Oil mixes with water.
Answer: False
vii. Sand settles down in water.
Answer: True
viii. Vinegar dissolves in water.
Answer: True
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
Answer:
Round shaped: Water, basket ball, orange, globe, apple, earthen pitcher
Other shapes: Water, sugar
b) Eatables and non eatables
Answer:
Eatables: Water, orange, sugar, apple
Non eatables: basket ball, globe, earthen pitcher
6. List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Answer: wood, plastic, bamboo, thermocol, banana trunk etc.
(Please note that these objects may not necessarily float on oil or kerosene due to differences in density and viscosity.)
7. Find the odd one out from the following:
a) Chair, Bed, Table, Baby, Cupboard
Answer: Baby
b) Rose, Jasmine, Boat, Marigold, Lotus
Answer: Boat
c) Aluminium, Iron, Copper, Silver, Sand
Answer: Sand
d) Sugar, Salt, Sand, Copper sulphate
Answer: Sand
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