As in the figure, the piece of solid wax sinks in the molten wax. In contact with hot molten wax, the solid wax melts very fast. The density of solid wax is higher than the density of liquid wax.
Answer the following questions:
Whether the volume increases or decreases when liquid wax became solid wax?
Whether the volume increases or decreases when liquid wax became solid wax?
Important Questions on Physical Environment
In the figure, the piece of ice floats on water. The density of the solid ice is less than the density of water.
Answer the following question:
Whether the volume of water increases or decreases when it freezes to ice?
Write in the following table.
| Name of the cooking utensil | Material used to make it a good conductor of heat. | Bad conductor used to hold the utensil when it is hot. |
| Saucepan | ||
| Wooden spatula | ||
| Kettle | ||
| Frypan | ||
| Spider |
Watch the picture and fill in the blanks with the words given below.
[Refracted ray, angle of incidence, normal, line representing the surface of separation between the media, angle of refraction, incident ray]
AO = _____, OB = _____, AOC = _____, BOD = _____, EOF = _____, COD = _____
