Question

2. Fill in the blanks.
a) On cooling, the temperature of an object ________
b) The unit of measurement of temperature is degree __________
or degree ___________
c) Most substances __________
on heating and __________
on cooling
d) If a hot iron spoon is put in water at room temperature, heat flows from the ______________
to __________ . As a result, the temperature of ____________
increases while the
temperature of ___________
decreases.​

Answer 1

Answers of the given blanks:

• a) On cooling, the temperature of an object decreases.
• b) The unit of measurement of temperature is degree Celcius or degree Fahrenheit
• c) Most substances expand on heating and contract on cooling.
• d) If a hot iron spoon is put in water at room temperature, heat flows from the iron to water. As a result, the temperature of water increases while the temperature of iron decreases$.$

Cooling means the dropping of temperature of any body. This occurs when the object is left for some time or the heat is conducted to any other body. Temperature is measured by Degree Celsius or Fahrenheit, and also Kelvin. Heat mostly expands an object and decreases it size and contracts while cooling.

When two objects are placed with unequal temperature, the heat is conducted from one to another, till thermal equilibrium is achieved. Like in the above case, Heat is transferred from hot body to cold body.

Explore more !!

Actually, ☀️Heat energy is the total internal energy of all molecules and atoms of any substance. A hot body has more internal energy as compared to the cold body. So, Here are some basic informations related to heat:

• The Internal energy flows from a hot body to a cold body when they are kept in contact. But it can also take place in the absence of medium.
• Measuring heat is also known as Calorimetry.
• S.I. unit of heat is Joule(J) and other used unit is Calorie(cal). 1 cal = 4.2 J
• Temperature helps in knowing about the thermal state of a body, or degree of hotness and coldness of the body.

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Answer 2

Answer

a) On cooling, the temperature of an object decreases.

b) The unit of measurement of temperature is degree Celsius.(The S.I unit of temperature is Kelvin)

or degree Farenheit

c) Most substances expand

on heating and contract

on cooling

d) If a hot iron spoon is put in water at room temperature, heat flows from the iron to water. As a result, the temperature of water increases while the temperature of iron decreases.​

Explanation:

Hope this helps you my friend:)