Question 1

Which of the following body parts can rotate completely in a circle?

Accepted Answer

The correct answer is the arm. The shoulder joint is a ball and socket joint which allows movement in all directions, including complete circular rotation of the arm.

Question 2

Name the type of joint that is present between your skull bones.

Accepted Answer

The correct answer is fixed joints. The bones in the skull are joined together so that they cannot move at these joints. Such joints are called fixed joints.

Question 3

Which joint connects our head to the neck?

Accepted Answer

The correct answer is pivot joint. The joint where our neck joins the head is a pivot joint. It lets us bend our head forward and backward and turn the head to the right or left.

Question 4

What makes the bones move in our body?

Accepted Answer

The correct answer is contraction and relaxation of muscles. Muscles work in pairs; when one contracts, the bone is pulled in that direction, causing movement.

Question 5

Which of the following animals has neither bones nor muscles for movement?

Accepted Answer

The correct answer is earthworm. Earthworms move by the contraction and relaxation of circular and longitudinal muscles and tiny bristles, but they do not possess any bones.

Body Movements — CBSE Class 6 Science Important Questions & Revision Notes