27-10-2012, 04:03 PM
WORLD OF MATTER
Matter is made up of tiny particles. All objects are made up of
matter, anything that has mass and occupies space is called matter. It is a
physical quantity which expresses the amount of matter in a body. The
space that is inside the container, which has been occupied by matter is
said to be its Volume. Density is the ratio of Mass to Volume.
Evaporation:
Evaporation causes cooling and converts liquid into gaseous state.
Gaseous state on cooling forms liquid drops by the process of
Condensation.
Heat energy is absorbed by an object and warms it. Different
colours respond to the absorption of heat differently, that is why in summer
we wear light coloured clothes as they reflect the heat and in winter dark
coloured clothes as they absorb the heat.
Matter is made up of tiny particles. All objects are made up of
matter, anything that has mass and occupies space is called matter. It is a
physical quantity which expresses the amount of matter in a body. The
space that is inside the container, which has been occupied by matter is
said to be its Volume. Density is the ratio of Mass to Volume.
Evaporation:
Evaporation causes cooling and converts liquid into gaseous state.
Gaseous state on cooling forms liquid drops by the process of
Condensation.
Heat energy is absorbed by an object and warms it. Different
colours respond to the absorption of heat differently, that is why in summer
we wear light coloured clothes as they reflect the heat and in winter dark
coloured clothes as they absorb the heat.