Practicing with SCERT Class 6 Basic Science Notes and Kerala Syllabus 6th Standard Basic Science Second Term Question Paper 2022-23 English Medium will help students prepare effectively for their upcoming exams.
Class 6 Basic Science Second Term Question Paper 2022-23 English Medium
Activity 1
Observe the pictures and complete the table given below.
A. Friut – Types Examples
| Simple Fruit | Mango | Tomato |
| ……………… | ……………….. | Custard apple |
| Multiple fruit | Pineapple | ……………….. |
| ……………….. | ……………….. | Apple |
B. What changes occur to the following parts of a flower when it becomes a fruit?
i) Androcium – …………..
ii) Ovary – ……………
iii) Calyx – …………..
iv) Ovule – ………….
Answer:
| Fruit – Types | Examples |
| Simple Fruit | Mango, Tomato |
| Aggregate Fruit | Strawberry, Custard apple |
| Multiple fruit | Pineapple, Mulberry |
| False fruit | Chamba, Apple |
B. i) Androecium – Falls off
ii) Ovary – Develops into fruit
iii) Calyx – becomes strong
iv) Ovule – Develops into seed
Activity 2
Observe the picture.
A. What motion taken place in the picture marked where it is 1 and 2? Write down the characteristics of each motion.
B. Write any two examples for these types of motions.
Answer:
A. In 1 – It is circular motion
In 2 – Osillation
Circular motion – The motion along a circular path is circular motion.
Oscillation – The to and fro motion of a body about a mean position is called oscillation.
B) Circular motion examples
i) Swirling a stone tied to rope
ii) Toy train running along a circulr path
Oscillation examples
i) Motion of swing
ii) Motion of a hanging lamp
Activity 3
Read the news.
| New report The Students set an example for the nation by cleaning the unused pond. |
A. Complete the table including the various fators of a pond ecosystem
| Biotic Factors | Abiotic factor | |
| Producers | Consumers | |
| i) ………………. | Water Snake | v) …………….. |
| ii) …………… | iv) ……………… | vi) ……………. |
B) Complete the food chains including organisms in the pond ecosystem.
1) ………. → ………… → frog → ………..
2) ……… → small fishers → …………. → …………
Answer:
A.
| Biotic Factors | Abiotic factor | |
| Producers | Consumers | |
| i) Algae | Water Snake | v) Water |
| ii) Acquatic plants | iv) frog | vi) Air |
B. i) Aquatic → fish → Frog → water snake
ii) Algae → small fishes → water snake → Eagle
Activity 4
Observe the gears that Salim got when be opened the clock
A. Which gear rotates in the same direction of ger 1?
B. Which gear is the fasest and which is the slowest?
C) Gears helps to transfer the force applied in one part of a device to another part. Write two other arrangements for this type of transfer of force?
Answer:
A) Gear 3
B) Gear 4 is the fastest.
Gear 1 is the slowest
C) Belt and chain
Activity 5
Observe the picture
Some activities that take place while riding a bicyle are given below,
i) Pedalling
ii) Applying the brake
iii) Turning the handle
A. How does the force affect the motion in each situation?
B. The teacher said that the sound heard when the children put their ears toeach other’s chest was the movement of the heart. Write two other movements that occur in your body.
Which is the odd one in group?
i) A ball thrown against the wall bounces
ii) Increases the speed of the running bus.
iii) A vehicle moving forward reverses backward.
iv) Hits a bowled ball with the cricket bat.
Answer:
A. i) Pedalling – Increases speed
ii) Applying the brake – stops movement
iii) Tuming the handle – changes the direction
B. Movement of eyeballs Movement of arms
C. Increase the speed of the running bus.
Activity 6
Vegetable Production and consumption
A study reports that the consumption of vegetables in the diet of people is decreasing while the activities to increase the vegetable production are going on.
Vegetable consumption is decreasing. Diseases are increasing Nutrition deficiency diseases are on the rise in the country. The new generation is averse to eating vegetables.
Have you read the newspaper reports given above.
A. Conducting an interview with a doctor to know more about deficiency diseases. Prepare a questionnaire for this purpose.
B. Iron is a mineral that is abundant in leafy vegetables. Name an iron deficiency disease?
Answer:
A. a) How do deficiency diseases cause?
b) Is there any disease caused by over nutrition?
c) Write any two nutrition deficiency diseases?
d) What do you mean by nutrient deficiency diseases?
e) Name a disease caused by deficiency of Iodine.
B. Anaemia
Activity 7
Check the list of food items.
Wheat, vegetables, tapioca, rice,cashew nuts, sunflower oil, coconut oil, leafy vegetable meat, ghee, groundnut, palm oil, potatoesm green gram fruits, bran of cerels.
A Arrange the food items in the table given below.
| Nutrients | |||
| Carbohydrate | Protein | …………….. | Fat |
| Tapioca | ………………. | Fruits | …………. |
| ……….. | …………. | …………. | …………… |
| …………….. | …………….. | …………. | ……….. |
| ………… | ………………. | ………… | ……….. |
B. Protein is the major nutrient that helps for the development and growth of the body. Name the disease caused by the deficiency of protein.
Answer:
| Nutrients | |||
| Carbo-hydrate | Protein | Vitamins & Minerals | Fat |
| Tapioca | Cashew nuts | Fruits | Sunflower oil |
| Wheat | Meat | Leafy vegetables | Coconut Oil |
| Rice | Ground nut | Vegetables | Ghee |
| Potatos | Green gram | Bran of cereals | Palm oil |
Activity 8
Look at the statement given below.
A) Why does this happen?
B) If all the frogs in a field gets disappeared, which organisms would have food scarcity and which organisms would increase in number?
C) A Paddy field is filled with soil to build a playground, How does it affect the eco-system?
Answer:
A. Over application of chemical fertilizers decreases the number of microorganisms which helps decomposition
B. Water snake
C. Organisms like fish, frog, grassshopper, small plants, snakes etc loses their habitat.
Activity 9
Observe the table given below.
A. Write an activity to find out whether these substances are magnetic or non magnetic.
B. Classify the magnetic and non magnetic sub-stances given in the box and write in a table.
C. If a bar magnet shown in the figure is cut through the points A and B, which of the following is the correct illustration?
Answer:
A. Bring all these substances to the magnet, some substances attracted by the magnet and these substances are called magnetic substances. Some substances are not attracted by the magnet and these substances are called non magnetic substances.
B. Magnetic substances : iron powder, stapler pin, steel coin, safety pin, iron nail.
Non – magnetic substances: cardboard, wood dust, marble (goli), rubber, match stick
C. Picture 4
Activity 10
A. What health problems are caused when cholesterol level is high in the body?
B. What changes should this person make in his food habits to keep his Cholesterol level under control? Write down your suggestions.
C. Write an experiment to detect the fat contents in food items.
Answer:
A. When cholesterol level is high it leads to cardiac diseases. It adheres to the inner walls of blood vessels and prevents the flow of blood.
B. Avoid fatty foods
Avoid fried items
Include more leafy vegetables and fruits in the diet.
C. Aim : To detect the presence of fat in food items
Materials required: Food item, white paper, procedure: Rub any food item on a paper.
If the paper is oily even after it dried, we may conclude that the food contain fat.