Four children measure the length of a table which was about 2 m. Each of them used different ways to measure it. - Science

Advertisements
Advertisements
Answer in Brief

Four children measure the length of a table which was about 2 m. Each of them used different ways to measure it.

  1. Sam measured it with a half metre long thread.
  2. with a 15 cm scale from her geometry box.
  3. Reena measured it using her hand span.
  4. Salim measured it using a 5 m long measuring tape.

Which one of them would get the most accurate length? Give reason for your answer.

Advertisements

Solution

Salim would get the most accurate length because he is using a 5 m long measuring tape which is longer than the table. So, he can measure the length of the table in one go accurately. While in the other cases the chance of making an error is higher due to multiple measurements. In case of Sam, only that lengths can be measured which are exact multiples of half a metre.

Concept: Devices for Measuring Length
  Is there an error in this question or solution?
Chapter 10: Motion and Measurement of Distances - Short Answer Questions [Page 62]

APPEARS IN

NCERT Exemplar Science Class 6
Chapter 10 Motion and Measurement of Distances
Short Answer Questions | Q 15. | Page 62

RELATED QUESTIONS

Fill in the blank:

The S.I. unit of length is ............ of time is ............ of mass is ............


Describe in steps how would you measure the length of a pencil using a metre rule. Draw a diagram if necessary.


State if the following statement is true or false: 

In ancient times, a cubit was used to measure the mass of an object.


Answer the following in short.

Which unit will you use to find the length of your notebook and why?


State if the following statement is true or false. Correct the statement if it is false.

A ruler with a damaged end can be used to measure a length accurately.


Why can hand span and arm length not be used as standard units of length?


How many centimetres are there in 1m?


Name the measuring device which can be used for measuring the girth of a tree.


Name the device used to measure the following:

Your weight.


Name the device used to measure the following:

Circumference of round table.


State two precautions to be observed while measuring length with the help of a metre scale.


The area can be calculated by using the two lengths and width.


Match the following:

1. Length a. Litre
2. Mass b. Seconds
3. Time c. Kilogram
4. Volume of liquid d. Metre

Four pieces of wooden sticks A, B, C, and D are placed along the length of 30 cm long scale as shown in Fig. Which one of them is 3.4 cm in length?


Which of the following figure shows the correct placement of a block along a scale for measuring its length?


SI unit of length is ______


While travelling in a train, it appears that the trees near the track are moving whereas co-passengers appear to be stationary. Explain the reason.


Share
Notifications



      Forgot password?
Use app×