Fill in the blanks :
(a) A device that is used to break an electric circuit is called _______________.
(b) An electric cell has _______________ terminals.

Draw (a) a leaf, (b) a taproot and (c) a flower, you have studied for Table 7.3.

You are given an iron strip. How will you make it into a magnet?

Name two foods each rich in:
(a) Fats
(b) Starch
(c) Dietary fibre
(d) Protein

A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?

Tick (√) the statements that are correct.
(a) By eating rice alone, we can fulfill nutritional requirement of our body. ( )
(b) Deficiency diseases can be prevented by eating a balanced diet. ( )
(c) Balanced diet for the body should contain a variety of food items. ( )
(d) Meat alone is sufficient to provide all nutrients to the body. ( )

List all items known to you that float on water. Check and see if they will float on an oil or kerosene.

Name the part of the plant which produces its food. Name this process.

Why can a pace or a footstep not be used as a standard unit of length?

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

Name two items that are made from coconut fibre.

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

Can you find a plant in your house or in your neighborhood, which has a long but a weak stem? Write its name. In which category would you classify it?

Which of the following leaves have reticulate venation?
Wheat, tulsi, maize, grass, coriander (dhania), China rose

Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.

Column I                           Column II
N - N                                   _________
N - _________                    Attraction
S - N                                   _________
_________ - S                    Repulstion

If a plant has leaves with reticulate venation, what kind of roots will it have?

Match the items given in Column A with that in Column B

Column A                                     Column B
Milk, curd, paneer, ghee               eat other animals
Spinach, cauliflower, carrot          eat plants and plant products
Lions and tigers                            are vegetables
Herbivores                                    are all animal products

In which part of a flower, you are likely to find the ovary?

A bar magnet has no markings to indicate its poles. How would you find out near which end is its north pole located?

Why can a pace or a footstep not be used as a standard unit of length?

Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?