NCERT solution for class 6// Science //Chapter 8 -Body moments

    

 NCERT solution > Class 6- Science .
NCERT solution for class 6// Science //Chapter 8 -Body moments

Chapter 8 -Body movement . 

Exercise 

Q1. Fill in the blanks

a) Joints of the bones help in the movement  of the body

b) Combination of bones and cartilage is from the framework of the body .

c) The bones at the elbow joint by a hinge joint 

d) The contraction of the muscles pull the bones during movement .

Q2. Indicate true and false among the following sentence 

a) The movement and location of all animals is exactly the same 

b) The cartilages are harder than bones .

c) The finger bones do not have joints 

d) The four arm has two bones .

e) Cockroaches have an outer skeleton 

Answer-  a) false 

b) false 

c) false 

d) True 

e) true 


Q3. Match the atoms in column a with one or more atoms of column 2 

            Column I                           Column II 

      1. Upper jaw                             Have fins on the body 

     2. Fish                                        Has an outer skeleton 

      3. Ribs                                     Can fly in the air 

    4. Snail is                                 An immovable joint 

    5. Cockroach                             Protect the heart 

                                                Show very slow movement 

                                                Have a streamlined body 

Answer- 

Column I                                 Column II

a) Upper jaw                     Is an immovable joint 

b) Fish                          Have a streamlined body 

c) Ribs                             Protect the heart 

d) Snail                         Show very slow movement 

e) Cockroaches                 Has an outer skeleton 

Q4. Answer the following 

a) What is a ball and socket joint? 

Answer-  The rounded end of one bone fits into the cavity of other bone. Which are attached to each other in such a way that they can be freely movable in all directions is called ball and socket joint 

ex - shoulder joints, hip joints  

b) Which of the skull bones are movable? 

Answer-  Lower jaw of a skull bones are movable

c) Why can our elbow not move backward ? 

Answer- Our elbow has a hinge type of joints and hinge joints only in direction it allow only back and forth movement .

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