Class 6 Science · 19 questions · 19 with answers
Which of the following parts of our body help us in movement? (i) Bones (ii) Skin (iii) Muscles (iv) Organs Choose the correct answer from the option below.
(a) (i) and (iii)
Which of the following joints is immovable?
(c) Upper jaw and skull
Which of the following organisms does not have both muscles and skeleton for movement?
(c) earthworm
Underwater divers wear fin-like flippers on their feet to
(a) swim easily in water.
Snail moves with the help of its
(c) muscular foot
How many muscles work together to move a bone?
(b) Two
Name the type of joint of your hand which help you to grasp a badminton racquet.
Hinge joint.
What would have happened if our backbone was made of one single bone?
We would not have been able to bend from our waist.
Provide one word answers to the statements given below. 1. Joint which allows movement in all directions. 2. Hard structure that forms the skeleton. 46 E XEMPLAR PROBLEMS 3. Part of the body with a fixed joint. 4. Help in the movement of body by contraction and relaxation. 5. Bones that join with chest bone at one end and to the backbone at the other end. 6. Framework of bones which gives shape to our body. 7. Bones which enclose the organs of our body that lie below the abdomen. 8. Joint where our neck joins the head. 9. Part of the skeleton that forms the earlobe.
1. Ball and socket 2. Bone/s 3. Upper jaw with skull 4. Muscles 5. Rib 6. Skeleton 7. Pelvic bones 8. Pivotal 9. Cartilage
Write the type of joint which is used for each of the following movements:
(a) A cricket bowler bowls the ball.
(b) A girl moves her head in right and left direction.
(c) A person lifts weights to build up his biceps.
Match the name of the animals given in Column I with its body parts used for movement given in Column II. BODY MOVEMENT 47
a– (iii) b– (v) c– (iv) d– (ii) e– (i)
Given below is a list of different types of movements in animals. Write the types of movements seen in each animal.
(a) Duck
(b) Horse
(c) Kangaroo
(d) Snail (e) Snake (f) Fish (g) Human beings (h) Cockroach
Boojho fell off a tree and hurt his ankle. On examination the doctor confirmed that the ankle was fractured. How was it detected?
The doctor must have observed a swelling and taken an X-ray of the ankle. X-ray images confirm injuries/fractures in bones.
Bones are hard structures and cannot be bent. But, we can still bend our elbow, knee, etc. How is this possible?
Elbow and knee are not made up of a single bone, but two or more bones which are joined to each other by a joint (Hinge joint). This joint along with the muscles help us to bend the elbow and knee.
Which type of movement would have been possible if
(a) our elbow had a fixed joint.
(b) we were to have a ball and socket joint between our neck and head.
Earthworms are known as ‘farmer’s friends’. Why?
An earthworm eats its way through the soil. Its body excretes the undigested materials that makes the soil fertile. LONG ANSWER QUESTIONS
(a) Unscramble the jumbled words and write them in the blank spaces provided.
(i) neosb ................ (v) arctigeal ................
(ii) tnemevom ................ (vi) epahs ................
(iii) iontcaronct ................ (vii) sangro inerlan ................
(iv) lsecsum ................ (viii) laxaeriont ................ 48 E XEMPLAR PROBLEMS (b) Read the following paragraph and fill in the blanks using the words you unscrambled. ______(a)______ and ______(b)______ form the skeleton of the human body. They provide the framework, give ______(c)______ to the body and help in ______(d)______ They protect the ______(e)______ The bones are moved by alternate ______(f)______ and ______(g)______ of two sets of ______(h)______ attached to them.
How is the skeleton of a bird well-suited for flying?
1. Bones are hollow and light. 2. Bones of hind limbs are for walking and perching. 3. Bones of fore limbs are modified as wings. 4. Shoulder bones are strong. 5. Breast bones hold flight muscles and are used to move the wings up and down.
In Fig. 8.2 there are two snakes of the same size slithering on sand. Can you identify which of them would move faster and why? Fig. 8.2
This question refers to a figure in the original PDF.
A snake forms loops in its body while slithering. Each loop of the snake gives it a forward push by pressing against the ground. The snake with a large number of loops moves much faster than the snake with less number of loops. Thus snake “A” will move faster than snake “B”. 124 E XEMPLAR PROBLEMS