CBSE Class 6 Science - Body Movements. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the student to understand the chapter and score better marks in the examinations.
NOTES Class-6th Term-1
Q2 Define Joints. Name the various types of movable joints
A A joint is a place where two or more bones meet. Various types of movable joints are-
1 ball and socket joint 2.Pivotal joint 3 .Hinge joint
Q3 Bones are hard and cannot be bent? How do we bend our limbs at the elbow and knees?
A We can bend our limbs at the elbow and knees because of presence of hinge joint .
Q4 What are fixed joints ? Give its example.
A Fixed joints do not allow any movement. eg. bones of our skull.
Q5 What is a ball and socket joint? Give its example.
A In this type of joint ball of one bone is fitted in the socket of another bone .eg hip joint
Q6 How are we able to move our head up and down and sideways?
A Pivotal joint
Q7 Name the joint that allows movement in one plane only?
A Hinge joint
Q8 Define pivotal joint.
A In this joint rounded surface of one bone fits into the ring formed by the other.
Q9 What is the significance of human skeleton? (2 points)
A 1 It provides support to the body and give specific shape to it
2 It helps to protect delicate organs.
Q10 What is a rib cage?
A Chest bone and backbone together form a box called ribcage
Q11What are the important organs protected by ribcage?
A Heart and lungs
Q12How many bones are present in our shoulder?
Q13 Differentiate between bone and cartilage?
A Bone is hard and inflexible and cartilage is soft and flexible
Q14What is the main function of a muscle and how does it work?
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