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CLASS - 6 SCIENCE 

CHAPTER - 8

BODY MOVEMENTS

QUESTION AND ANSWERS


Question no. 1


Fill in the blanks:
(a) Joints of the bones help in the ——————— of the body.
(b) A combination of bones and cartilages 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 movement.

Answer no. 1


(a) Movement
(b) Skeleton
(c) Hinge
(d) Muscles

Question no. 2


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.

Answer no. 2


(a) False
(b) False
(c) False
(d) True
(e) True

Question no. 3


3.Match the items in Column I with one or more items of Column II.

 Answer no. 3


 Column I                                   Column II

  Upper jaw                                is an immovable joint  
 Ribs                                            protect the heart
 Snail                                          Shows very slow movement
 Cockroach                                has an outer skeleton

Question no. 4


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 move backwards?

Answer no. 4


(a) Ball socket joint
 The rounded end of one bone fits into the cavity i.e hollow space of the another bone. Such a joint allows Movement in all directions which is called ball and socket joint.
(b) lower jaw
(c) Elbow has a Hinge Joint. Because of hinge joint it cannot move backwards.

 Also see answers of the following chapters -

Garbage in Garbage out
Air around us
Water
Fun with Magnets
Electricity and Circuits
Light, Shadow and Reflection
Motion and Measurement of Distances
The Living Organisms and their Surroundings
Body Movements
Getting to know Plants
Changes Around Us
Separation of Substances
Sorting Material into Groups
Fibre to Fabric
Components of Food
Food : Where does it com from ?

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