Page 53 - ACTIVE SCIENCE 4 TOC

LET’S
REVISE

• Food is essential for us.
• We need food for energy, growth and survival.

• Nutrients present in food keep us healthy, help the body to grow and make us strong.

• Fats give us more energy than carbohydrates.
• Roughage is fibre. Raw fruits, vegetables and cereals are fibre-rich foods.

• Refrigeration, drying, canning and pickling are the various means of food preservations.
• Exercise, rest and body posture are very important to keep us healthy.

Glossary

• Nutrients : Substances present in food which keep us healthy and strong.

• Roughage : Fibre-rich food.
• Balanced diet : A diet that contains all nutrients in the right proportion.

• Preservation : Method to keep food fresh and prevent it from getting spoilt.

Practice Time

A. Tick the correct option.

1. Carbohydrates are known as ______________.
a. energy-giving food b. body-building food

c. protective food d. roughage
2. Fresh fruit and milk are the source of ______________.

a. vitamins b. proteins
c. carbohydrates d. fats

3. Calcium makes ______________.
a. bones strong b. eyes strong

c. muscles strong d. blood thicker

4. Jellying is a method of preserving food by ______________.
a. adding sugar b. adding salt
c. removing water d. freezing

B. Fill in the blanks.
1. Carbohydrates and fats provide us _____________.

2. Vitamins and minerals protect our body from _____________.

60 Active Science-4