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Selina solutions for Class 6 Physics chapter 2 - Physical Quantities and Measurement

Selina Concise Physics - Middle School for Class 6 (2018-19 Session)

Selina Selina Concise Physics - Middle School Class 6 (2018-19 Session) Chapter 2: Physical Quantities and Measurement

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

Write true or false .

S.I. unit of temperature is fahrenheit.

Write true or false

Every measurement involves two things – a number and a unit.

Write true or false :

Mass is the measure of quantity of matter.

Write true or false for :

The S.I. unit of time is hour.

Write true or false for.

The area can be expressed as the product of length of two sides.

Fill in the blank:

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

Fill in the blank:

°C is the unit of......................

Fill in the blank:

1 metric tonne = .............

Fill in the blank:

The zero mark in Celsius thermometer is the melting point of.......

Fill in the blank:

The thermometer used to measure the human body temperature is called the ...........  thermometer.

Fill in the blank:

The normal temperature of human body is ...... °C or.......°F.

Fill in the blank:

The ............ of an object is measured with the help of a beam balance.

Match the following column:

 Column A Column B (a) Length of a housing plot (1) Clock (b) Breadth of a book (2) Beam balance (c) Mass of an apple (3) Thermometer (d) Period of time for study (4) Measuring tape (e) Temperature of a body (5) Graph paper (f) Surface area of a leaf (6) Metre ruler

Select the correct alternative:

The symbol of degree celsius is

1. °C
2.  °F
3.  K
4.  °K

Select the correct alternative:

lO mm is equal to

1.  1cm
2.  1m
3.  10dm
4.  10cm

Select the correct alternative

The amount of surface occupied by an object is called its:

1.  volume
2.  area
3.  mass
4.  length

Select the correct alternative

A metre ruler is graduated in:

1.  m
2.  cm
3.  mm
4.  km

A thermometre is graduated in:

1.  kelvin
2.  °C
3.  g
4.  cm

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

What is measurement ? How is a measurement expressed ?

State two characteristics of a unit.

Name four basic measurements in our daily life.

What are the S.I. units of

1.  mass
2.  length
3.  time and
4.  temperature. Write their names and symbols.

Define one metre, the S.I. unit of length. State its one multiple and one sub multiple.

Convert the following quantitie as indicated :

12 inch = ft

Convert the following quantitie as indicated:

1 ft = cm

Convert the following quantitie as indicated :

20 cm = m

Convert the following quantitie as indicated:

4.2 m = cm

Convert the following quantitie as indicated :

0.2 km = m

Convert the following quantitie as indicated:

0.2 cm = mm

Convert the following quantitie as indicated :

1 yard = m

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

Name the device which you will use to measure the perimeter of your play ground. Describe in steps how you will use it.

The diagram below shows a stick placed along a metre RULER. The length of the stick is measured keeping the eye at positions A, B and C.

Define mass. State its (1) S.I. (2) C.GS and (3) EP.S. units. How are they related ?

Convert the following quantitie as indicated:
2500 kg = ………. metric tonne.

Convert the following quantitie as indicated:

150 kg = quintal

Convert the following quantitie as indicated:

10 lb = ………. kg

Convert the following quantitie as indicated:

250 g = … .kg

Convert the following quantitie as indicated:

0.01 kg = ………. g

Convert the following quantitie as indicated:

5 mg = ………. kg

Name the instrument which is commonly used to measure the mass of a body. State how is it used ?

Define one kilogram, the S.I. unit of mass. How is it related to (i) quintal (ii) metric tonne and (iii) gram.

Name and define the S.I. unit of time. How is it related to (i) minute (ii) hour, (iii) day and (iv) year ?

Name two devices used to measure the short time interval of an event.

Express in second :

3 minute 15 second

Express in second:

5 hour 2 minute 5 second.

What does the temperature measure ?

Name the S.I. unit  .

Name the one common unit of temperature. Write their symbols also.

Name the instrument used for measuring of the temperature of a person. Draw its labelled neat diagram.

Write the temperature of melting ice .

Write the temperature of boiling water.

What is a clinical thermometer ? State its special feature. Draw a labelled neat diagram of a clinical thermometer showing the range of temperature marked on it.

What is the normal temperature of the human body ? How is it indicated in a clinical thermometer ?

Can a clinical thermometer be used to measure the temperature of the boiling water ? Give reason for your answer.

Explain the term area of a surface.

Name the S.I. unit of area and define it.

How are the unit of square yard .

How are the unit of  hectare .

How are the unit of km2.

How are the unit of cm2 .

How are the unit of mm2 related to the S.I. unit of area ?

Explain how you will measure the area of (i) a square (b) a leaf?

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

State if the following statement is true or false :

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

State if the following statement is true or false :

There are seven base units in the SI system.

State if the following statement is true or false.

Second is considered as the fundamental unit of time in both CGS and MKS systems.

State if the following statement is true or false.

Centi mean a hundredth part.

State if the following statement is true or false

The symbol used for a unit is always written in capital letters.

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

What do you understand by the term measurement ?

What are derived physical quantities ? Give any two examples of derived physical quantities.

What are the characteristics of a standard unit ?

Mention any two advantages of the metric system over traditional units.

Which institution in the world maintain the guidelines for using the SI units correctly ?

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

What are fundamental physical quantities ? Name any three fundamental physical quantities.

Explain by giving two examples why the measurement of a physical quantity is expressed as a combination of a numeral and a unit.

Explain in detail why there was a need to standardize units.

Why are multiples and submultiples of SI units required?

State some common rules to write SI units correctly.

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

Tick the most appropriate answer.

1. The SI unit of mass is

1.  gram
2.  milligram
3.  kilogram
4.  pound

Tick the most appropriate answer.

To measure the volume of an irregular shaped body, we use a

1.  graph paper
2.  beam balance
3. measuring cylinder
4.  ruler

Tick the most appropriate answer.

Which of the following weighing devices has a very high accuracy and sensitivity ?

1.  Beam balance
2.  Grocer’s balance
3. Physical balance
4.  Spring balance.

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

State if the following statement is true or false.

Area of an object is a fundamental physical quantity.

State if the following statement is true or false.

The error in reading a scale due to the wrong positioning of the eye is called human error.

The region enclosed within the boundaries of a two-dimensional figure is called its area.

The length of an irregular object can be found with the help of a graph paper.

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

Match the following.

 Column A Column B (1) Length a. kilogram (2) Mass b. cubic metre (3) Area c. metre (4) Volume d. square metre

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

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

What do you understand by the 4erm ‘mass’ ? Name any one instrument used for weighing.

Explain the working of a beam balance.

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

Find the area of these leaves, where 1 square on the graph paper represents 1 cm2. Chapter 2: Physical Quantities and Measurement solutions [Pages 0 - 1]

Tick the most appropriate answer.

Which of the foliowing is a fundamental physical quantity?
Speed
Area
Volume
Time

Tick the most appropriate answer.

The system of measurement based on centimetre-gram- second is known as
SI system
FPS system
MKS system
CGS system

Tick the most appropriate answer.

The region enclosed within the boundaries of a closed figure is known as its
length
area
volume
temperature

Tick the most appropriate answer.

Which of the following devices is used to measure mass?
Ruler
Measuring cylinder
Beam balance
Stopwatch

Tick the most appropriate answer

Which of the following is not a common unit for measuring time ?
Hour
Mean solar day
Year
Sundial

Tick the most appropriate answer.

A train departs from Delhi railway station at 21:50 hours every day. The time shown in you analogue watch at the departure will be
2:50 a.m
9:50 p.m.
9:50 a.m.
11:50 p.m.

Tick the most appropriate answer.

The total number of divisions in the Celsius scale is
90
100
180
360

Tick the most appropriate answer.

The maximum and minium thermometer is commonly used by a
doctor
student
meteorologist
goldsmith

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

Fill in the blank.

There are .............fundamental physical quantities.

Fill in the blank.

In the ............ system, length is measured in centimetres.

Fill in the blank.

1 kilometre is equal to...............etres.

Fill in the blank.

The amount of matter contained in a body is known as its ...........

Fill in the blank.

The first two digits in a 24 hour time fomiat represent the number of............

Fill in the blank

If the departure time of a train on a railway ticket is printed as 20:35, then it will depart at ............

Fill in the blank

The lower fixed point in a laboratory thennometer is the same as that of ................

Fill in the blank.

The temperature at which water freezes is known as..................

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

State if the following statement is true or false.

The average of a group of observations is calculated by adding all the observations and dividing the sum by the number of observations.

State if the following statement is true or false.

A laboratory thermometer has a kink in its capillary tube.

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

Water is the most commonly used thermometric substance.

State if the following statement is true or false.

Mercury does not stick to the surface of glass.

State if the following statement  is true or false.

1 m = 10,000 cm3

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

Answer the following in a word or two or in a sentence. Name the unit which is commonly in both the MKS and CGS systems.

Name an instrument generally used to find the time interval between two events accurately.

If the alarm of a digital clock is set at 05:50, at wdiat time will the alarm ring during the day ?

At what temperature is the upper fixed point of a clinical thermometer kept ?

Write the formula for finding the average of a given set of observation.

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

What is parallax error ?

Explain the working of an extension spring balance.

What do you mean by a mean solar day ?.

Why is there a slight bend in the capillary tube of a clinical thermometer near the bulb ?

What is the function of the bulb in a thermometer ?

Describe any two means by which the actual capacity’ of a measuring container can be made less than the correct value by a dishonest trader.

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

What do you understand by the term  capacity ?

What do you understand by the term volume ?

which is the most suitable unit for measuring the volume of a glass filled with water ?

which is the most suitable unit for measuring the volume of swimming pool ?

which is the most suitable unit for measuring the volume of air inside an inflated balloon?

which is the most suitable unit for measuring the volume of cylinder of a car engine ?

Explain in detail why railways and airlines use the 24-hour clock format.

Distinguish between laboratory and clinical thermometers.

What do you understand by the term temperature?

When are approximations necessary in daily life and when should they be avoided ?

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

Body parts should not be used for correct measurements of an object.

Measurements are very important for life.

Measuring units are standardized.

Chapter 2: Physical Quantities and Measurement solutions [Page 0]

Express 2.25mincm  ?

Express 6L tn mL .

Express 8000 g in kg ?

20 one – rupee coins are placed one above the other. If their total height is 32 mm, find the thickness of one coin.

A piece of wire is wound around a pencil 60 times. If tite total width of all the turns is 4 cm, find the diameter of the wire.

Amit dipped a stone tied with a string in a measuring cylinder filled with water. If the initial level of water was 56 mL and after dipping the stone the final level of water was 78 mL, find the volume of the stone.

Grass is to be laid a rectangular field of dimensions 55 m × 45 m. Calculate the area of the field.

A lawn is in the shape of a square. Find the area covered by the lawn if each of its sides is 50 m.

An aeroplane leaves Bengaluru at 23:50 hours and reaches Chennal at 00.40 hours. Rewrite the statement using a 12- hour time format. Also find the duration of the flight.

The body temperature of a patient on Monday was102 °F and on Tuesday it was 104°F. What was the rise in temperature during these two days?

The masses of five marbles are 50 g, 55 g, 60 g, 65 g and 70 g. Find their average mass.

The rainfall in a city on each day of a week is recorded below. Find the average rainfall for the week.

 day mon Tue Wed Thurs Fir Sat Sun Rainfall (in mm) 1.2 10.3 5.5 0.0 13.5 7.0 1.0

Chapter 2: Physical Quantities and Measurement

Selina Selina Concise Physics - Middle School Class 6 (2018-19 Session) Selina solutions for Class 6 Physics chapter 2 - Physical Quantities and Measurement

Selina solutions for Class 6 Physics chapter 2 (Physical Quantities and Measurement) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Selina Concise Physics - Middle School for Class 6 (2018-19 Session) solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com are providing such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 6 Physics chapter 2 Physical Quantities and Measurement are Concept of Physical Quantities and Measurement, Concept of Length as the Distance Between Two Points., Concept of Measurement of Length (Ruler, Measuring Tape), Concept for Measurement of Length - Units (Symbol and Full Name), Concept of Mass as Matter Contained in an Object., Measurement of Mass (Beam Balance, Electronic Balance)., Measurement of Mass - Units (Symbol and Full Name), Concept of Time in Terms of Hours, Minutes and Seconds., Measurement of Time (Clock, Watch, Stopwatch), Measurement of Time - Units (Symbol and Full Name), Concept for Temperature - Measure Of Degree of Hotness Or Coldness of Body., Measurement of Temperature (Clinical Thermometer, Laboratory Thermometer)., Normal Temperature of a Human Body, Measurement of Temperature - Units (With Symbol and Full Name)., Measurement of Area - Concept of Area, Measurement of Area - Area of Regular Shapes (Using Graph Paper).

Using Selina Class 6 solutions Physical Quantities and Measurement exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 6 prefer Selina Textbook Solutions to score more in exam.

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