NCERT Question 3 - Chapter 4 Class 7 - Heat

Fill in the blanks :

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

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

_____________ thermometer.

(c) Temperature is measured in degree ______________.

(d) No medium is required for transfer of heat by the process of

__________.

(e) A cold steel spoon is dipped in a cup of hot milk. Heat is transferred

to its other end by the process of ______________.

(f ) Clothes of ______________ colours absorb more heat better than

clothes of light colours.

Answer:

1. The hotness of an object is determined by its temperature.
2. Temperature of boiling water cannot be measured by a clinical thermometer.
3. Temperature is measured in degree celsius or fahrenheit.  
4. No medium is required for transfer of heat by the process of radiation.
5. A cold steel spoon is dipped in a cup of hot milk. Heat is transferred to its other end by the process of conduction.
6. Clothes of dark colours absorb more heat better than clothes of light colours.