Network
Characteristics
1.Some materials, such as metal, feel cold when you touch them because they draw the heat from your hand. They are said to be good thermal conductors.
2.Other materials, such as wood, feel warm to the touch.
3.They do not draw heat from your hand and are said to be good thermal insulators.
Functions: We use all these materials to build our homes and to make the things we use every day.
2.Sponge
MAIN IDEA
Class
