CBSE Class 6 Science Body Movements VBQs

Choose The Correct Answer.

Question. Which of the following organ is protected by rib cage:
a) Heart
b) Brain
c) Eyes
d) Ear
Answer : A

Question. Fish maintains its balance water and change its directions with the help of:
a) Head
b) Gills
c) Fins
d) Body Scales
Answer : C

Question. Snail moves with the help of:
a) Shell
b) Bones
c) Muscular foot
d) Cartilage

Answer : C

Fill In The Blanks.

a). The points where bones meet are called joints.

b). Human skeleton is made up of bones and cartilages.

c). Skull protects brain of our body.

d). Earthworm can extend or shorten its body by using its muscles.

e). Knee joint is an example of hinge joint.

Write True Or False.

Question. Bones do not need the help of muscles to move. (False)
Answer : False

Question. Rib cage is conical structure made up of 12 pairs of ribs. (False)
Answer : False

Question. Snakes move very fast in a straight line. (False)
Answer : False

Question. A streamlined body is one in which middle part of body is larger than head and tail part. (True)
Answer : True

Question. Cartilages are harder than bones. (False)
Answer : False

Match The Column:-

Answer : (i) - (d), (ii) - (a), (iii) - (b), (iv) - (e), (v) - (c), 

ACTIVITY- 

Question. What are the small bones present in backbone called?
Answer : Vertebrae.

Question. Name the ridges like bones which we feel when we touch our chest region.
Answer : Ribs.

ACTIVITY- To know about the points where bones meet.

Question. When you tie a scale with your arm, are you able to bend your elbow?
Answer : No.

Question. Name the points where two parts of body are seen to be joined together.
Answer : Joints.

ACTIVITY- To make a model of hinge joint.

Question. Move your arm at shoulder. Are you able to move it various directions? If yes name the type of joint present there.
Answer : Yes, we can move our shoulder in various directions. Our shoulder has ball and socket joint.

Question. Move your arm at elbow. Are you able to move it in various directions? If yes name the type of joint present there.
Answer : No, we cannot move our arm at elbow in all directions, because it has hinge joint.

Very Short Answer Type Questions.

Question. What is the difference between movement and locomotion?
Answer : Movement is change in position of one part of body whereas locomotion means moving the whole body from one place to another.

Question. Name the longest bone in human body.
Answer : Femur.

Question. Give an example of an organism which can walk, climb and fly?
Answer : Cockroach.

Question. Name the type of joint where arms join the shoulder.
Answer : Ball and Socket joint.

Short Answer Type Questions.

Question. How does earthworm move?
Answer : Earthworm moves by regular contractions and expansions of body using muscles. Snail moves by muscular foot.

Question. Why we need a pair of muscles to move a bone?
Answer : Because to move a bone one muscle contracts and other one relax at the same time.

Question. How does the body of a bird help it in flight?
Answer : Birds have streamlined body, hollow bones and forelimbs modified into wings which enable them to fly in air.

Long Answer Type Questions.

Question. Explain the locomotion of fish.
Answer : The fish has streamlined body. Fish produces regular jerks by making curves and pushes the body forward. The body movements like change in directions while swimming and to maintain balance is helped by fins.

Question. Explain different types of joints present in human body.
Answer : (1) Fixed Joints- Joints where no movement of bones is possible. For example joints in skull.
(2) Movable Joints- The joints where movement of bones is possible. It has four types-
(i) Ball and Socket Joint- In this joint a ball like end of one bone moves in socket like end of another bone. For example joint in shoulder.
(ii) Pivot Joint- In this joint a cylinder like end of one bone rotates in ring like end of another bone. For example joint in neck.
(iii) Hinge Joint- This joint is like hinge in door. It allows movement of bones only in one direction
i.e. up and down or back and forth. For example joints in elbow and knee etc.
(iv) Gliding Joint- This joint allows bones to glide over each other. For example joint in wrist.