Samacheer Kalvi 6th Science Solutions Term 1 Chapter 1 Measurements

Tamilnadu Samacheer Kalvi 6th Science Solutions Term 1 Chapter 1 Measurements

Samacheer Kalvi 6th Science Measurements Textual Evaluation

Students can practice CBSE Class 6 Science MCQs Multiple Choice Questions with Answers to score good marks in the examination.

Question 1.
The girth of a tree can be measured by
(a) metre scale
(b) metre rod
(e) plastic ruler
(d) measuring tape
(d) measuring tape

Question 2.
The conversion of 7 m into cm gives
(a) 70 cm
(b) 7 cm
(c) 700 cm
(d) 7000 cm
(c) 700 cm

Question 3.
Quantity that can be measured Is called
(a) Physical quantity
(b) Measurement
(c) unit
(d) motion
(a) Physical quantity

Question 4.
Choose the correct one
(a) km > mm > cm > m
(b) km > mm > m > cm
c) km > m > cm > mm
(d) km > cm > m > mm
(c) km > m > cm > mm

Question 5.
While measuring length of an object using a ruler, the position of your eye should be
(a) Left side of the point.
(b) Vertically above the point where the measurement is to be taken.
(c) Right side of the point
(d) Any where according to one’s convenience.
(b) Vertically above the

II. True or False.

1. We can say that mass of an object is 126 kg.
2. Length of one’s chest can be measured by using metre scale.
3. Ten millimetres makes one centimetre.
4. A hand span is a reliable measure of length.
5. The SI system of units is accepted everywhere in the world.

1. True
2. False
3. True
4. False
5. True

III. Fill in the blanks.

1. SI Unit of length is symbolically represented as _____
2. 500 gm = _____ kilogram
3. Distance between Delhi and Chennai can be measured in _____
4. 1 m = _____ cm.
5. 5 km = _____ m.

1. m
2. 0.5
3. Kilometer
4. 100
5. 5000

IV. Analogy

Question 1.
Sugar: Beam balance; Lime juice?
Measuring Jar.

Question 2.
mm (millimeter)

Question 3.
Milk: volume; vegetables?
mass

V. Match the following :

VI. Complete the given table

VII. Arrange in increasing order of unit.

Question 1.
1 Metre, 1 centimetre, 1 kilometre, and 1 millimetre.
1 millimetre < 1 centimetre < 1 Metre < 1 kilometre.

VIII. Find the answer for the following questions within the grid.

1. 10-3 is one _____
2. SI Unit of time _____
4. _____ is the one what a clock reads.
5. _____ is the amount of substance present in an object
6. _____ can be taken to get the final reading of the recordings of different of students for a single measurement.
7. _____ is a fundamental quantity.
8. _____ shows the distance covered by an automobile.
9. A tailor use _____ to take measurements to stitch a cloth.
10. Liquids are measured with this physical quantity.

1. Millimetre
2. second
3. error
4. Time
5. Mass
6. Average
7. Length
8. Odometer
9. Tape
10. Litre

IX. Answer in a word or two.

Question 1.
What is the full form of the SI system?
International System of Units.

Question 2.
Name any one instrument used for measuring mass.
Beam balance.

Question 3.
Find the odd one out: Kilogram, millimetre, centimetre, nanometre.
Kilogram

Question 4.
What is the SI Unit of mass?
Kilogram.

Question 5.
What are the two parts present in a measurement?
A number and the units.

X. Answer in a sentence or two.

Question 1.
Define measurement.
The comparison of unknown quantities with some known quantities is known as measurement.

Question 2,
Define mass?
Mass is the measure of the amount of matter in an object.

Question 3.
The distance between the two places is 43.65 km. Convert it into metre and cm.
43.65 km is 43650 m [1 km = 1000 m]
43.65 km is 4365000 cm [1 m = 100 cm]

Question 4.
What are the rules to be followed to make an accurate measurement with scale?

1. To avoid the parallax error.
2. Your eye must be exactly in front of vertically above the point where the measurement has to be taken.

XI. Solve the following.

Question 1.
The distance between your school and your house is 2250 m. Express this distance in kilometre.
1 km = 1000 m
Distance between school and house is 2250 m = 2.250 km.

Question 2.
While measuring the length of a sharpened pencil, the reading of the scale at one end is 2.0 cm and at the other end is 12.1 cm. What is the length of the pencil?
The difference between the two readings is the length of the pencil.
= 12.1 cm – 2.0 cm
= 10.1 cm or 10 cm and 1 mm.

XII. Write in detail.

Question 1.
Explain two methods that you can use to measure the length of a curved line.
Method 1:

1. Take a string and place it along the curved line.
2. Mark the points where the curved line begins and ends on the string.
3. Stretch the string along the length of a meter scale and measure the distance between the two markings of the string.
4. This will give you the length of a curved line.

Method 2:

1. Take a divider separating the legs of the divider by 0.5 cm (or) 1 cm using a ruler.
2. Place it on the curved line starting from one end.
3. Mark the position of the other end.
4. Move it along the line again and again cutting the line into numbers and segments of equal lengths.
5. The remaining parts of the line can be measured using a scale.
6. The Length of the line = (number of segments × length of each segment) + Length of the leftover part.

Question 2.
Fill in the following chart.

Samacheer Kalvi 6th Science Measurements Additional Questions

Question 1.
In which SI unit, you can measure your height?
(a) Kilogram
(b) Litre
(c) Metre
(d) Second
(c) Metre

Question 2.
What is the unit of electric current in the SI system?
(a) Kelvin
(b) Ampere
(c) seconds
(d) Volt.
(b) Ampere

Question 3.
_____ is used to measure the accurate time of the activity.
(a) Clock
(b) Watch
(c) Stop clock
(d) Sundial
(c) Stop dock

Question 4.
These are the measurements used in measuring the volume of liquid.
(a) cylinder
(b) pipettes
(c) burettes
(d) All.
(d) All

Question 5.
S.I unit for Volume is _____
(a) m2
(b) m
(c) m3
(d) none
(c) m3

Question 6.
Twenty decimetre is equal to _____
(a) 2 km
(b) 20 cm
(c) 2 metre
(d) 200 mm
(c) 2 metre

Question 7.
_____ is used to measure mass.
(a) Stop clock
(b) Beam balance
(c) Sundial
(b) Beam balance

Question 8.
The metric system of units was created by the _____ in 1790.
(a) Greek
(b) Australians
(c) Russians
(d) French
(d) French

Question 9.
The moon’s gravitational pull is one _____ of the earth’s pull.
(a) seventh
(b) sixth
(c) fifth
(d) fourth
(b) Sixth

II. Find whether the following sentences are true or false. If false Correct the statement.

Question 1.
Kerosene is measured with the help of the graduated cylinder.
True.

Question 2.
Length is a fundamental quantity.
True.

Question 3.
On the moon, the gravitational force is greater than on earth.
False. On the moon, the gravitational force is lesser than on earth.

Question 4.
An electronic balance is a device used to find accurate mass.
True.

Question 5.
A speedometer is a device used for indicating distance travelled by an automobile.
False. Odometer js a device used for indicating distance travelled by automobile.

Question 6.
A ruler or scale used nowadays to measure length was invented by William Bedwell.
True.

Question 7.
Length, mass, and time are some of the derived quantities.
False. Length, mass, and time are some of the fundamental quantities.

Question 8.
Leaves and pieces of paper are heavier things.
False. Leaves and pieces of paper are lighter things.

Question 9.
The national physical laboratory is located in Delhi.
True.

III. Analogy.

Question 1.
Potatoes : Kilogram; Water?
Litre.

Question 2.
Stop clock : accurate time; _______ : accurate weight
Electronic balance.

Question 3.
Mass : Balance; Length?
measuring tape.

Question 4
Amount of matter: mass; Gravitational Pull?
Weight.

IV. Answer the following questions in one or two words.

Question 1
What are the materials needed to find the length of a banana?
A meter scale, a string or thread, sketch pen.

Question 2.
What formula is used to measure the area of your classroom?
My classroom area = Length × Breadth

Question 3.
Give an example of a device used to find the accurate measurement of weight.
Electronic balance.

Question 4.
In earlier days, which instruments are used to measure time?
Sand clock and Sundial.

Question 5.
What are the clocks used to measure a smaller duration of time?
Electronic clock, Stopwatch.

Question 6.
Who invented a ruler or scale?
William Bedwell.

Question 7.
Which alloy is used to make the standard metre rod?
An alloy of platinum and iridium.

V. Match the following

a. ii
b. iii
c. iv
d. i

VI. Answer the following In one or two sentences:

Question 1.
What is the international system of units or SI units?
For the sake of uniformity all over the world, we have adopted a common set of units to express measurements that are called an international system of units or SI units.

Question 2.
Give some examples of larger length measures.

1. Height of the building,
2. Length of a banner,
3. Height of lamp post.

Question 3.
What is the unit of measurements of very small lengths?

1. Millimetre
2. centimetre.

Question 4.
What is meant by parallax?
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight.

Question 5.
What is the clock used by ancient people to measure daytime?

1. sand clock
2. sun clock.

Question 6.
Where are the electronic balances used?
Electronic balances are used in grocery shops and jewellery.

Question 7.
What is an odometer?