1. Name the major nutrients in our food.

2. Name the following:

    (a) The nutrients which mainly give energy to our body.

2. Name the following:

(b) The nutrients that are needed for the growth and maintenance of our body.

2. Name the following:

(c) A vitamin required for maintaining good eyesight.

2. Name the following:

(d) A mineral that is required for keeping our bones healthy.

3. Name two foods each rich in:

(a) Fats

3. Name two foods each rich in:

(b) Starch

3. Name two foods each rich in:

(c) Dietary fibre

3. Name two foods each rich in:

(d) Protein

4. 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. ( )

5. Fill in the blanks. (a) ______________ is caused by deficiency of Vitamin D.

5. Fill in the blanks.

(b) Deficiency of ______________ causes a disease known as beri-beri.

5. Fill in the blanks.

(c) Deficiency of Vitamin C causes a disease known as ______________.

5. Fill in the blanks.

(d) Night blindness is caused due to deficiency of ____________ in our food.

1. To walk through a waterlogged area, you usually shorten the length of your dress by folding it. Can this change be reversed?

2. You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed?

3. Some changes are listed in the following table. For each change, write in the blank column, whether the change can be reversed or not.

S. No.   Change Can be reversed (Yes/No)
1. The sawing of a piece of wood.  
2. The melting of ice candy.  
3. Dissolving sugar in water.  
4. The cooking of food.  
5. The ripening of a mango.  
6. Souring of milk.  

 

4. A drawing sheet changes when you draw a picture on it. Can you reverse this change?

5. Give examples to explain the difference between changes that can or cannot be reversed.

6. 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?

7. A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?

1. Give two examples each, of modes of transport used on land, water and air.

2 (i). Fill in the blanks: One metre is ______________ cm

2 (ii). Fill in the blanks:

 Five kilometre is ______________ m.

2 (iii). Fill in the blanks:

Motion of a child on a swing is ______________.

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