CBSE Class 6 Science Practice Worksheet Set 20

Question 1. In your kitchen and refrigerator you find various food packets . Read the wrappers. Food value is written on it. Some pictures are given as per example. List the food value of these items.(any five)
Answer:
Based on common packaged food items shown in the pictures (such as fruit juice cartons, chocolates, tomato ketchup, packaged fruits, and snack packets), here is the listing of their primary food values and nutrients:

In simple words: Food wrappers list nutrients like carbohydrates, proteins, fats, vitamins, and minerals that tell us what nourishment the food provides.

Exam Tip: Always read nutrition labels carefully to understand the balance of nutrients in packaged foods before consuming them.

Question 1b. Write an article on balanced diet. (150 words)
Answer:
Importance of a Balanced Diet
A balanced diet is essential for the proper growth, development, and maintenance of the human body. It is a diet that contains the right proportions of all essential nutrients, including carbohydrates, proteins, fats, vitamins, minerals, and dietary fiber, along with adequate water. Carbohydrates and fats provide energy to our body, while proteins are known as body-building foods because they help in growth and repair. Vitamins and minerals protect our body from various diseases and boost our immunity. Dietary fiber and water help in the easy digestion of food and removal of waste materials. Eating junk food exclusively lacks these vital nutrients and can lead to obesity and deficiency diseases. Therefore, incorporating fresh fruits, green leafy vegetables, whole grains, pulses, and dairy products into our daily meals ensures that our body functions at its absolute best, keeping us healthy, active, and energetic throughout the day.
In simple words: A balanced diet includes all necessary nutrients in correct amounts to keep our body healthy and strong.

Exam Tip: Remember the core components of a balanced diet: energy-giving foods, body-building foods, and protective foods.

Question 2. Collect different fabrics and paste it on your scrap book neatly. Write their names. Mention whether they are synthetic or man-made. On which weather do you wear them?
Answer:
Here is the classification and weather suitability for the requested fabrics:
1. Cotton - Natural fabric. Worn in summer season because it absorbs sweat and keeps the body cool.
2. Wool - Natural fabric. Worn in winter season because it traps air and keeps the body warm.
3. Jute - Natural fabric. Used mostly for making sacks, bags, and ropes; worn or used throughout the year for heavy-duty utility.
4. Silk - Natural fabric. Worn during special occasions, festivals, and mild winters or pleasant weather.
5. Nylon - Synthetic / Man-made fabric. Worn in rainy or humid weather as it dries quickly and is water-resistant.
6. Polyester - Synthetic / Man-made fabric. Worn in all seasons (especially in blended form) because it is durable and wrinkle-resistant.
7. Acrylic - Synthetic / Man-made fabric. Worn in winter season as a lightweight substitute for wool.
In simple words: Natural fabrics come from plants and animals and suit specific weather, while synthetic fabrics are man-made chemicals shaped into fibers.

Exam Tip: Clearly distinguish between natural fibers (cotton, wool, silk, jute) and synthetic fibers (nylon, polyester, acrylic) in your answers.

Question 3. See the given picture and write different ways of saving energy in your school campus. (Collect 10 points from the picture)
Answer:
Based on the energy-saving tips illustrated in the campus diagram, here are 10 ways to save energy:
1. Turn off computers at the power point when not in use.
2. Turn off power points for printers and photocopiers outside school hours.
3. Use energy-efficient lights in classrooms and corridors.
4. Set thermostats to 18 degrees Celsius to 20 degrees Celsius in winter and 26 degrees Celsius in summer.
5. Keep doors and windows closed when heaters or air conditioners are running.
6. Consider going solar for water heating systems.
7. Put timers on urns or use a kettle to boil only required water.
8. Choose refrigerators with a good energy star rating.
9. Walk, ride a bicycle, or take the bus to school instead of using individual cars.
10. Insulate buildings properly to minimize heat loss or gain.
In simple words: Saving energy in school involves turning off unused electrical appliances, using efficient equipment, and adopting eco-friendly transport habits.

Exam Tip: List practical conservation habits clearly as bullet points to score maximum marks.