Science тАв Chapter 2 тАв Measurement
Ways of Measuring Length
Textbook Paragraph
Measure the length of your school desk or table using your hand span and finger-width. Ask your friends, siblings, or parents to measure the same distance. Is everyoneтАЩs measurement the same?
ЁЯТб Simple Explanation
First, measure the length of your school desk or table using your hand span and finger-width.
A hand span is the distance between the tip of the thumb and the tip of the little finger when the hand is fully opened.
Finger-width means using the width of a finger as a unit for measuring length.
Ask your friends, brothers, sisters or parents to measure the same desk or table in the same way.
Compare everyoneтАЩs answers. The measurements may not be the same because the size of each personтАЩs hand and fingers can be different.
ЁЯУЪ Meanings
| Meanings | Marathi Arth | Hindi Arth |
|---|---|---|
| Length тАФ the distance from one end of something to the other end | рд▓рд╛рдВрдмреА | рд▓рдВрдмрд╛рдИ |
| School desk тАФ a table used by students at school | рд╢рд╛рд│реЗрддреАрд▓ рдмрд╛рдХ / рдЯреЗрдмрд▓ | рд╡рд┐рджреНрдпрд╛рд▓рдп рдХреА рдореЗрдЬрд╝ |
| Hand span тАФ the distance between the thumb and little finger of an open hand | рд╡реАрдд | рдмрд╛рд▓рд┐рд╢реНрдд |
| Finger-width тАФ the width of a finger used for measuring | рдЕрдВрдЧреБрд▓ | рдЕрдВрдЧреБрд▓ |
| Friends тАФ people whom we know and like | рдорд┐рддреНрд░ | рдорд┐рддреНрд░ |
| Siblings тАФ brothers and sisters | рднрд╛рд╡рдВрдбреЗ | рднрд╛рдИ-рдмрд╣рди |
| Parents тАФ mother and father | рдЖрдИ-рд╡рдбреАрд▓ / рдкрд╛рд▓рдХ | рдорд╛рддрд╛-рдкрд┐рддрд╛ / рдЕрднрд┐рднрд╛рд╡рдХ |
| Same distance тАФ an equal length measured by everyone | рд╕рдорд╛рди рдЕрдВрддрд░ | рд╕рдорд╛рди рджреВрд░реА |
| Measurement тАФ the result obtained after measuring something | рдореЛрдЬрдорд╛рдк | рдорд╛рдк |
Textbook Paragraph
In the past, units like finger-width (angul), fist (mushti), hand span (hasta) and footstep were used to measure length. However, because age, body sizes vary, the measurements taken by different people also vary. This is called тАШNon-standard measurementтАЩ.
ЁЯТб Simple Explanation
In earlier times, people used parts of their bodies as units for measuring length.
They used finger-width, called angul; the fist, called mushti; hand span, called hasta; and footsteps.
The age and body size of every person are not the same. Therefore, their fingers, fists, hands and footsteps can have different sizes.
When different people measure the same length using these body-based units, their answers may be different.
Such units do not have one fixed size for everyone. Therefore, this way of measuring is called Non-standard measurement.
ЁЯУЪ Meanings
| Meanings | Marathi Arth | Hindi Arth |
|---|---|---|
| In the past тАФ in earlier times | рдкреВрд░реНрд╡реАрдЪреНрдпрд╛ рдХрд╛рд│рд╛рдд | рдкреБрд░рд╛рдиреЗ рд╕рдордп рдореЗрдВ |
| Units тАФ fixed quantities used for measuring | рдПрдХрдХреЗ | рдЗрдХрд╛рдЗрдпрд╛рдБ |
| Finger-width тАФ the width of a finger used for measurement | рдЕрдВрдЧреБрд▓ | рдЕрдВрдЧреБрд▓ |
| Fist тАФ a tightly closed hand | рдореВрда / рдореБрд╖реНрдЯреА | рдореБрдЯреНрдареА |
| Hand span тАФ the distance between the thumb and little finger of an open hand | рд╡реАрдд / рд╣рд╕реНрдд | рдмрд╛рд▓рд┐рд╢реНрдд / рд╣рд╕реНрдд |
| Footstep тАФ the distance covered by one step | рдкрд╛рдКрд▓ | рдХрджрдо |
| However тАФ used to show a different or opposite point | рддрдерд╛рдкрд┐ / рдкрд░рдВрддреБ | рд╣рд╛рд▓рд╛рдБрдХрд┐ / рдкрд░рдВрддреБ |
| Body sizes тАФ the sizes of different peopleтАЩs bodies | рд╢рд░реАрд░рд╛рдЪреЗ рдЖрдХрд╛рд░ | рд╢рд░реАрд░ рдХреЗ рдЖрдХрд╛рд░ |
| Vary тАФ to be different | рдмрджрд▓рдгреЗ / рд╡реЗрдЧрд╡реЗрдЧрд│реЗ рдЕрд╕рдгреЗ | рдЕрд▓рдЧ-рдЕрд▓рдЧ рд╣реЛрдирд╛ |
| Non-standard measurement тАФ measurement made using units that are not fixed | рдЕрдкреНрд░рдорд╛рдгрд┐рдд рдореЛрдЬрдорд╛рдк | рдЕрдорд╛рдирдХ рдорд╛рдкрди |
Textbook Paragraph
Instead, if everyone uses a fixed unit, the measurement remains the same regardless of who measures it. This system is known as тАШStandard measurement.тАЩ For example, if you buy one metre of cloth from a shop where it is measured with a metre scale and your grandfather measures it again at home with his metre scale, will the measurements be the same or different?
Standard Measurement
Measurement made using a fixed unit that gives the same result for everyone is called standard measurement.
ЁЯТб Simple Explanation
To avoid different answers, everyone should use the same fixed unit for measuring.
A fixed unit does not change from one person to another. Therefore, the measurement remains the same whoever measures it.
This method of using fixed units is called Standard measurement.
A metre scale has one fixed length. A metre scale used in a shop and a metre scale used at home represent the same unit.
Therefore, one metre of cloth measured by the shopkeeper should have the same measurement when it is measured again at home using another correct metre scale.
ЁЯУЪ Meanings
| Meanings | Marathi Arth | Hindi Arth |
|---|---|---|
| Instead тАФ in place of something else | рддреНрдпрд╛рдРрд╡рдЬреА | рдЗрд╕рдХреЗ рдмрдЬрд╛рдп |
| Fixed unit тАФ a measuring unit whose value does not change | рдирд┐рд╢реНрдЪрд┐рдд рдПрдХрдХ | рдирд┐рд╢реНрдЪрд┐рдд рдЗрдХрд╛рдИ |
| Remains тАФ continues to be the same | рдХрд╛рдпрдо рд░рд╛рд╣рддреЗ | рдмрдирд╛ рд░рд╣рддрд╛ рд╣реИ |
| Regardless тАФ without being affected by a particular condition | рд╡рд┐рдЪрд╛рд░ рди рдХрд░рддрд╛ | рдкрд░рд╡рд╛рд╣ рдХрд┐рдП рдмрд┐рдирд╛ |
| System тАФ an organized method of doing something | рдкрджреНрдзрддреА / рдкреНрд░рдгрд╛рд▓реА | рдкреНрд░рдгрд╛рд▓реА |
| Standard measurement тАФ measurement made using fixed and accepted units | рдкреНрд░рдорд╛рдгрд┐рдд рдореЛрдЬрдорд╛рдк | рдорд╛рдирдХ рдорд╛рдкрди |
| Metre тАФ a standard unit used to measure length | рдореАрдЯрд░ | рдореАрдЯрд░ |
| Metre scale тАФ a measuring scale that is one metre long | рдореАрдЯрд░рдкрдЯреНрдЯреА | рдореАрдЯрд░ рдорд╛рдкрдиреА |
| Measured тАФ found the size or amount of something | рдореЛрдЬрд▓реЗрд▓реЗ | рдорд╛рдкрд╛ рдЧрдпрд╛ |
| Different тАФ not the same | рд╡реЗрдЧрд│реЗ | рдЕрд▓рдЧ |