Class 6 Science Chapter 10 Temperature and its Measurement

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Class 6 Science Chapter 10 Temperature and its Measurement

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Temperature and its Measurement

Chapter: 10

PART – II

EXERCISE

Darken the circle of correct answer.

1. What is the reading of the thermometer in the given figure.

(a) 15.0°C.

(b) 36.0°C.

(c) 25.0°C.

(d) 32.0°C.

Ans: (a) 15.0°C.

2. The range of a clinical thermometer is ________.

(a) 35°C to 42°C

(b) 32°C to 45°C

(c) -10°C to 110°C

(d) 10°C to 100°C

Ans: (a) 35°C to 42°C

3. The normal temperature of a human body is ________.

(a) 98.6°C

(b) 34.0°C

(c) 37.0°C

(d) 37.0°F

Ans: (c) 37.0°C

4. Fill in the blanks.

(a) The hotness of an object is determined by its ____________.

Ans: Temperature.

(b) Temperature of boiling water cannot be measured by a  __________ thermometer.

Ans: Clinical.

(c) Temperature is measured in degree _____________.

Ans: Celsius.

5. Match the following.

Part A	Part B
(i) Sl unit of temperature	(a) 100°C
(ii) Normal temperature of human body	(b) -10°C to 110°C
(iii) Range of laboratory thermometer	(c) 37°C or 98.6″F
(iv) Temperature of boiling water	(d) Kelvin

Ans: 

Part A	Part B
(i) Sl unit of temperature	(d) Kelvin
(ii) Normal temperature of human body	(c) 37°C or 98.6″F
(iii) Range of laboratory thermometer	(b) -10°C to 110°C
(iv) Temperature of boiling water	(a) 100°C

6. Mention the similarities and differences between the laboratory thermometer and the clinical thermometer.

Ans: Similarities:

(i) Both measure temperature using mercury expansion.

(ii) Both have a bulb containing mercury.

(iii) Both use Celsius scale.

Differences:

(i) Clinical thermometer measures body temperature (35°C to 42°C), laboratory thermometer measures a wider range (-10°C to 110°C).

(ii) Clinical thermometer has a kink to hold mercury column; laboratory thermometer does not.

(iii) Laboratory thermometers are generally longer and used for scientific measurements.

7. Why can’t we use a laboratory thermometer to measure the temperature of our body? Give reason.

Ans: Because the range of a laboratory thermometer (-10°C to 110°C) is too broad and not precise enough for body temperature, and it lacks the kink that prevents mercury from falling, making it difficult to record body temperature accurately.

8. Mark the mercury level on the sketches of thermometers as per the temperature reading shown below near each thermometer.

Ans: