NCERT Solutions for Class 6 Science Chapter 10 Motion and Measurement of Distances in English and Hindi Medium for session 2022-2023.

### NCERT Solutions for Class 6 Science Chapter 10

Class VI Science chapter 10 solutions are updated for new academic session 2022-23. Key words and explanations of chapter are given in Video Format. You can download NCERT Solutions Apps following the latest CBSE Curriculum and NCERT Books. If you have any doubt, visit to Discussion Forum and ask your doubt.

 Class: 6 Science Chapter 10: Motion and Measurement of Distances Study Material: Exercise and Extra Questions Content Type: Text and Online Videos Medium: Hindi and English Medium

#### Class 6 Science Chapter 10 Study Material

##### Important Questions on 6th Science Chapter 10 for Practice

1. The distance between Delhi and Mumbai is usually expressed in units of
(a) decametre
(b) metre
(c) centimetre
(d) kilometre

2. Paheli moves on a straight road from point A to point C. She takes 20 minutes to cover a certain distance AB and 30 minutes to cover the rest of distance BC. She then turns back and takes 30 minutes to cover the distance CB and 20 minutes to cover the rest of the distance to her starting point. She makes 5 rounds on the road the same way. Paheli concludes that her motion is
(a) only rectilinear motion.
(b) only periodic motion.
(c) rectilinear and periodic both.
(d) neither rectilinear nor periodic.

3. Which of the following does not express a time interval?
(a) A day
(b) A second
(c) A school period
(d) Time of the first bell in the school

4. Fill in the blanks
(i) Motion of an object or a part of it around a fixed point is known as ……………. motion.
(ii) A body repeating its motion after certain interval of time is in ……… motion.
(iii) In rectilinear motion, object moves……….. a ………. line.
(iv) SI unit of length is……….

5. Four children measure the length of a table which was about 2 m. Each of them used different ways to measure it.
(i) Sam measured it with a half metre long thread.
(ii) Gurmeet measured it with a 15 cm scale from her geometry box.
(iii) Reena measured it using her hand span.
(iv) Salim measured it using a 5 m long measuring tape.

6. Which one of them would get the most accurate length? Give reason for your answer.
7. Write one example for each of the following type of motion.
(i) Rectilinear
(ii) Circular
(iii) Periodic
(iv) Circular and periodic

Answer 4. (i) circular (ii) periodic (iii) straight; along (iv) metre

Answer 5. Salim would get the most accurate length. The reason is that in this case the length of the table can be measured in one go because the measuring tape is longer than the table. In the other cases the chance of making an error is higher due to multiple measurement. In case of Sam, he can measure the lengths which are exact multiples of half a metre.

Answer 6. (i) An object moving on a straight road, falling stone, etc.
(ii) A mark on blades of a rotating fan, tips of the hands of a clock, etc.
(iii) Motion of a child on a swing, motion of pendulum, strings of a guitar, etc.
(iv) Blades of a rotating fan, hands of a clock, etc.

### Give two examples each, of modes of transport used on land, water and air.

Land transport : Bus, train, motorbike. Water transport : Boat, ship, steamer. Air Transport : Aeroplane, Helicopter.

### Fill in the blank: One metre is ______________ cm.

One metre is 100 cm.

### Fill in the blank: Five kilometre is ____________ m.

Five kilometre is 5000 m.

### While measuring the length of a knitting needle, the reading of the scale at one end is 3.0 cm and at the other end is 33.1 cm. What is the length of the needle?

The length of the needle = 33.1 cm – 3.0 cm = 30.1 cm

### Write the similarities and differences between the motion of a bicycle and a ceiling fan that has been switched on.

Similarity : Both show a circular motion. Difference : Bicycle shows a rectilinear motion whereas a ceiling fan does not.    