Q1 of 16 Page 35

When an object is heated, the molecules that make up the object

When any object is heated the molecules gain kinetic energy and starts moving faster and the number of collisions between the molecules increases.

More from this chapter

All 16 →
1

The temperature of a body is an indicator of

 1

A and B are two objects. The temperature of A is greater than that of B. This means that

 2

Fill in the blanks with suitable words:

1. The degree of hotness of a body is called_______ (heat/ temperature)


2. Temperature is expressed in_______(degree centigrade/joule)


3. A substance changes from liquid to gas at constant temperature.


It is called _______(condensation/boiling point)


4. The temperature of boiling water in the Celsius scale of temperature is ________°C (100/373/212/32)


5. The SI unit of heat is _________(Joule/Celsius)

 3

State whether the following statements are true or false:

1. Liquids expand on heating.


2. The unit of heat and temperature are the same.


3. A bimetallic strip is used in fans.