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

The unit of heat is

One litre of water at 30^o C is mixed with one litre of water at 50^o C. The temperature of the mixture will be

An iron ball at 50°C is dropped in a mug containing water at 50^o C. The heat will

Heat flows from a ____________ body to a ____________ body.

The hotness of the object is determined by its_________.

The SI unit of temperature is ________.

Solids_________ on heating and______ on cooling.

Two bodies are said to be in the state of thermal________ if there is no transfer of heat taking place.

Heat is a kind of energy that flows from a hot body to a cold body.

Steam is formed when heat is released from water.

Thermal expansion is always a nuisance.

Borosilicate glass do not expand much on being heated.

The unit of heat and temperature are the same.

An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.

Rivet is heated before fixing in hole to join two metal plates.

Make a list of electrical equipments at home which we get heat from.

What is temperature?

What is thermal expansion?

What do you understand by thermal equilibrium?

What difference do you think heating the solid will make in their molecules ?

Distinguish between heat and temperature.

Explain thermal expansion with suitable examples.

When a window is accidentally left open on a winter night, will you feel uncomfortable because the cold is getting in, or because the heat is escaping from the room?

Suppose your normal body temperature were lower than what it is. How would the sensation of hot and cold change?

If you heat a circular disk with a hole, what change do you expect in the diameter of the hole? Remember that the effect of heating increases the separation between any pair of particles.