krit.club logo

Food and Health - Balanced Diet

Grade 4ICSE

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

•

A Balanced Diet is a diet that contains the right amounts of all the necessary nutrients, namely carbohydrates, proteins, fats, vitamins, and minerals, along with roughage and water.

•

Carbohydrates are 'Energy-giving foods'. They provide the body with the energy required to perform work. Common examples include glucose (C6H12O6C_6H_{12}O_6) and starch.

•

Proteins are 'Body-building foods'. They are essential for the growth of the body and the repair of worn-out tissues.

•

Fats provide more energy than carbohydrates and help keep the body warm. They are stored in the body for future use.

•

Vitamins and Minerals are 'Proteive foods'. They are needed in small quantities to protect the body against diseases and keep us healthy (e.g., Calcium (CaCa) for bones and Iron (FeFe) for blood).

•

Roughage is the fiber present in food that cannot be digested but helps in the easy removal of waste from the body.

•

Water is vital for life. About 70%70\% of our body weight is water, and it helps in digestion and maintaining body temperature.

📐Formulae

Balanced Diet=Carbohydrates+Proteins+Fats+Vitamins/Minerals+Fiber+Water\text{Balanced Diet} = \text{Carbohydrates} + \text{Proteins} + \text{Fats} + \text{Vitamins/Minerals} + \text{Fiber} + \text{Water}

C6H12O6 (Glucose - a simple carbohydrate)C_6H_{12}O_6 \text{ (Glucose - a simple carbohydrate)}

H2O (Water - essential for life processes)H_2O \text{ (Water - essential for life processes)}

Energy from 1g Fat>Energy from 1g Carbohydrate\text{Energy from 1g Fat} > \text{Energy from 1g Carbohydrate}

💡Examples

Problem 1:

Identify the missing component: Rahul eats a meal consisting of Rice (Carbohydrates), Dal (Proteins), and Ghee (Fats). What should he add to make it a perfectly balanced diet?

Solution:

He should add green leafy vegetables and fruits.

Explanation:

While his meal has energy-giving and body-building foods, it lacks Vitamins and Minerals (Protective foods) and Roughage (Fiber) found in fruits and vegetables.

Problem 2:

Why is it recommended to drink 8−108-10 glasses of H2OH_2O every day?

Solution:

To maintain the 70%70\% water balance in the body and aid digestion.

Explanation:

Water acts as a medium for all chemical reactions in the body and helps in the excretion of waste products through sweat and urine.

Problem 3:

A label on a food packet shows it contains high amounts of CaCa and FeFe. What benefits do these provide?

Solution:

Calcium (CaCa) for strong bones/teeth and Iron (FeFe) for healthy blood.

Explanation:

Minerals are protective nutrients. CaCa is essential for skeletal strength, while FeFe is required to form hemoglobin in the blood.