8. BODY MOVEMENTS Science class 6 exercise Important Questions with solution
8. BODY MOVEMENTS Science class 6 exercise Important Questions with solution ncert book solution in english-medium
NCERT Books Subjects for class 6th Hindi Medium
Chapter Review
Exercise (NCERT Text Book)
Exercise Question:
Que1: Full in the blanks:
(a) Joints of the bones help in ______ of the body.
(b) A combination of bones and crtilages forms the ______ of the body.
(c) The bones at the elbow are joined by a _______ Joint.
(d) The contraction of the ______ pulls the bones during movements.
Ans:
(a) movement
(b) skeleton
(c) hinge
(d) muscle
Que2: Indicate true (T) and false (F) among the following sentences.
(a) The movement and locomotion of all animals is exactly the same. ( )
(b) The cartilages are harder than bones. ( )
(c) The finger bones do not have joints. ( )
(d) The fore arm has two bones. ( )
(e) Cockroaches have an outer skeleton. ( )
Ans:
(a) (False)
(b) (False)
(c) (False)
(d) (True)
(e) (Ture)
Que3: Match the item in column I with one or more items of column II.
Column I Column II
Upper jaw have fine on the body
Fish Has an outer skeleton
Rids Can fly in the air
Snail is an immovable joint
Cockroach Protect the heart
shows very slow movement
have a streamlined body
Ans:
Column I Column II
Upper jaw is an immovable joint
Fish have fine on the body, have a streamlined body
Rids Protect the heart
Snail shows very slow movement
Cockroach Has an outer skeleton, Can fly in the air
Que4: Answer the following:
(a) What is a ball and socket joint?
(b) Which of the skull bones are movable?
(c) Why can our elbow not more not move backwards?
Ans:
(a) A ball and socket joint is a moveable joint. It has a rounded end of one bone fit into the cavity (hollow space) of the other bone. It allows movement in all directions. Example: shoulder joints.
(b) Only the lower jaw in skull bones is movable.
(c) Elbow joint is an example of hinge joint which allow only back and forth movements. Therefore, we cannot move our elbow backwards.
Important Questions with solution
Important Questions with solution
Q1: What is joint?
Ans: We are able to bend or rotate our body in place where two parts of our body seem to be joined together these places are called joints.
Q2: Name that joint which allows movement in all directions.
Ans: Ball and socket joint.
Q3: Write an example of hinge joint.
Ans: knee joint.
Q4: What is fixed joint?
Ans: Some joints in our head, the bone can’t move such a joint are called fixed joint.
Q5: What is skeleton?
Ans: The bones in our body also form a framework to give a shape to our body. This framework is called skeleton.
Q6: What is rib cage?
Ans: Ribs join the chest bone and the backbone together to form a box . This is called the rib cage.
Q7: What is cartilage?
Ans: Soft bone which can be bent is called cartilage. Ex – ear and sternum.
Q8: What is a ball and socket joit?
Ans: The rounded end of one bone fits into cavity of the other bone. Such a joint allows movements in all directions.
Q9: Which of the skull bones are movable?
Ans: Lower jaw.
Q10: Why can our elbow not move backwards?
Ans: Elbow cannot move backwards because it has hinge joint which allows only back and forth movements.
Q11: What is streamlined?
Ans: The head and tail of the fish are smaller than the middle portion of the body tapers at both ends. This body shape is called streamlined.
Q12: How do snails move?
Ans: Snails move with the help of a muscular foot.
Q13: How do earthworms move?
Ans: Earthworms move by alternate extension and contraction of the body using muscles.
Q14: How do bones move?
Ans: The bones are moved by alternate contractions and relaxations of two sets of muscles.
Q15: Why do fishes have fins on their body?
Ans: Fishes have fins on their body which mainly help to keep the balance of the body and to keep direction, while swimming.
Important Questions with solution
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Science Chapter List
1. FOOD: WHERE DOES IT COME FROM
2. COMPONENTS OF FOOD
3. FIBRE TO FABRIC
4. SORTING MATERIAL INTO GROUPS
5. SEPARATION OF SUBSTANCES
6. CHANGES AROUND US
7. GETTING TO KNOW PLANTS
8. BODY MOVEMENTS
9. THE LIVING ORGANISMS AND THEIR SURROUNDINGS
10. MOTION AND MEASUREMENT OF DISTANCES
11. LIGHT, SHADOWS AND REFLECTIONS
12. ELECTRICITY AND CIRCUITS
13. FUN WITH MAGNETS
14. WATER
15. AIR AROUND US
16. GARBAGE IN, GARBAGE OUT
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