NCERT Class VI Science Solutions: Chapter 8 – Body Movements Part 4

Download PDF of This Page (Size: 243K)

LONG ANSWER QUESTIONS

Question 17:

  1. Unscramble the jumbled words and write them in the blank spaces provided.

    1. neosb

    2. tnemevom

    3. tracontionc

    4. clsumse

    5. arctigeal

    6. epahs

    7. inrnteal gaorsn

    8. iaretinoax

  2. Read the following paragraph and fill in the blanks using the words you unscrambled.

    __________and __________form the skeleton of the human body. They provide the framework, give __________to the body and help in __________They protect the __________.The bones are moved by alternate __________and __________of two sets of __________attached to them.

Answer:

    1. Bones

    2. Movement

    3. Contraction

    4. Muscles

    5. Cartilage

    6. Shape

    7. Internal organs

    8. Relaxation

  1. Read the following paragraph and fill in the blanks using the words you unscrambled.

    Bones and cartilage form the skeleton of the human body. They provide the framework, give shape to the body and help in movement. They protect the internal organs. The bones are moved by alternate contraction and relaxation of two sets of muscles attached to them.

Question 18:

How is the skeleton of a bird well-suited for flying?

Answer:

Image of birds bone

Image of Birds Bone

Image of birds bone

  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 tip and down.

Question 19:

In Fig, there are two snakes of the same size slithering on sand. Can you identify which of them would move faster and why?

Result for two snakes

Two Snakes

Result for two snakes

Answer:

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”.