CBSE Class 6 Science Body Movements Worksheet Set 01

Question 1. Which system forms the supporting framework of the body?
Answer: The skeletal system forms the supporting framework of the body, giving it shape, structure, and protection to internal organs.
In simple words: The skeleton supports our body and holds everything together.
Exam Tip: Remember that bones and cartilage together make up the skeletal system.

Question 2. Do snakes have legs?
Answer: No, snakes do not have legs. They move by slithering on the ground using loops formed by their long backbone, muscles, and scales.
In simple words: Snakes do not have legs; they push against the ground with their curved body to move forward.

Exam Tip: Snakes have a very long backbone and many thin muscles attached to ribs, skin, and scales that help in locomotion.

Question 3. Give example of an immovable joint or fixed joint?
Answer: The joints between the bones of the skull (cranium) are examples of immovable or fixed joints because these bones cannot move relative to each other.
In simple words: The joints in our skull bones do not allow any movement.

Exam Tip: Fixed joints are also known as fibrous joints where bones are firmly held together.

Question 4. Where do we find Ball and socket joints in our body?
Answer: Ball and socket joints are found in the shoulder (joining the arm to the shoulder) and the hip (joining the thigh bone to the hip bone).
In simple words: Shoulders and hips have ball and socket joints that allow movement in all directions.

Exam Tip: This type of joint permits maximum rotational movement in multiple planes.

Question 5. Where do we find Hinge joints in our body?
Answer: Hinge joints are found in the elbows, knees, and between the fingers and toes.
In simple words: Knees and elbows work like door hinges, allowing movement only in one direction.

Exam Tip: Hinge joints allow back-and-forth movement in a single plane, similar to the hinge of a door.

Question 6. Match the column -
A) Rib cage - 4) Heart
B) Snails - 5) Muscular foot
C) Skull - 1) Brain
D) Fish - 2) Fins
E) Cartilage - 3) Ear
Answer:
a - 4
b - 5
c - 1
d - 2
e - 3
In simple words: Each body part or organ is correctly matched with its corresponding protector, structure, or means of movement.

Exam Tip: Double-check matching questions by crossing out options once used.

Question 7. Write main difference between bone and cartilage?
Answer:
Bone: Hard, rigid, and inflexible skeletal tissue that forms the main framework of the body.
Cartilage: Soft, elastic, and flexible tissue found in parts of the skeleton like the earlobe and nose tip.
In simple words: Bones are hard and stiff, while cartilage is soft and bendable.

Exam Tip: Mention flexibility and location as key differences to secure full marks.

Question 8. MCQ - Tick the correct option -
i) How many pairs of legs does a cockroach have?
(a) One
(b) Two
(c) Three
(d) Four
Answer: (c) Three
Cockroaches are insects, and all insects have six legs, which are 3 pairs.
In simple words: A cockroach has 6 legs total, which equals 3 pairs.

Exam Tip: Insect characteristics always include having 3 pairs of jointed legs.

ii) Which body part of a fish helps in changing the directions of movement while swimming?
(a) Tail
(b) Gills
(c) Fins
(d) Eyes
Answer: (a) Tail
While fins help maintain balance, the tail fin specifically acts as a rudder to change direction during swimming.
In simple words: The tail helps a fish steer and change direction.

Exam Tip: Do not confuse body fins with the tail fin when answering about changing direction.

iii) The joint between the thigh bone and the hip bone is.
(a) Pivot joint
(b) Gliding joint
(c) Hinge joint
(d) Ball and socket joint
Answer: (d) Ball and socket joint
The head of the thigh bone fits into the socket of the hip bone forming a ball and socket joint.
In simple words: Hips and shoulders use a ball and socket joint for wide rotation.

Exam Tip: Hips and shoulders are classic examples of ball and socket joints.

iv) Bone and cartilage forms the
(a) Reproductive system
(b) Nervous system
(c) Skeletal system
(d) Circulatory system
Answer: (c) Skeletal system
Bones and cartilage together constitute the skeletal framework of the human body.
In simple words: The skeleton is made up of bones and cartilage.

Exam Tip: Always associate bones and cartilage directly with the skeletal system.

Question 9. Can you identify the following -
a) Ball and socket joint
b) Hinge joint
c) Rib cage
d) Skull
Answer:
a) Ball and socket joint (Hip/Shoulder joint)
b) Hinge joint (Knee/Elbow joint)
c) Rib cage
d) Skull
In simple words: These diagrams show common joints and skeletal structures of the human body.

Exam Tip: Practice sketching and labeling the skull, rib cage, and major joints clearly for identification tests.

body movements

Question 1- What are the small bones present in backbone called?
Answer- Vertebrae.

Question 2- Name the ridges like bones which we feel when we touch our chest region.
Answer- Ribs.

ACTIVITY- 5 : To know about the points where bones meet. 

Question 1- When you tie a scale with your arm, are you able to bend your elbow?
Answer- No.

Question 2- Name the points where two parts of body are seen to be joined together.
Answer- Joints.

ACTIVITY- 6 : To make a model of hinge joint. 

Question 1- 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 2- 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.

EXERCISE

1- 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.

2- Write True Or False.

a. Rib cage is conical structure made up of 12 pairs of ribs. (False)
b) Cartilages are harder than bones. (False)
c) Bones do not need the help of muscles to move. (False)
d) A streamlined body is one in which middle part of body is larger than head and tail part. (True)
e) Snakes move very fast in a straight line. (False)

3- Match The Column:-
   
Column A                           Column B
1. Ball and Socket joint        a. Skull Bones
2. Immovable joint              b. Fingers
3. Hinge joint                      c. Wrist bones
4. Pivot joint                       d. Shoulder
5. Gliding joint                    e. Movement of head
Ans.1-d,2-2-a,3-b,4-e,5-c

4. Choose The Correct Answer.

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

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

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

5- Very Short Answer Type Questions.

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

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

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

6- Short Answer Type Questions.

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 earthworm move?
Answer- Earthworm moves by regular contractions and expansions of body using muscles. Snail moves by muscular foot.

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.
 

Question 7- Long Answer Type Questions.

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.

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.

1) Which system forms the supporting framework of the body?

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2) Do snakes have legs?

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3) Give example of an immovable joint or fixed joint?

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4) Where do we find Ball and socket joints in our body?

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5) Where do we find Hinge joints in our body?

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