Lesson 8 of 10
The big picture
Show on a big screenSeven ideas. Each one is a way to look at a material.
| Idea | Remember | Example |
|---|---|---|
| Object or material | The thing, and what it is made of. | Steel spoon, wooden spoon |
| Hard or soft | A hard material is hard to press in or scratch. | A steel file scratches glass |
| See-through | Transparent: clear. Translucent: a glow. Opaque: nothing. | Glass, butter paper, wood |
| Float or sink | Heavy for its size sinks. Light for its size floats. | A bowl floats. A nail sinks. |
| Dissolve | Not gone. Spread too small to see. | Sugar in tea |
| Right material | Pick the property the job needs. | Glass for a window |
| Shiny or dull | A shiny material has lustre. A dull material has no lustre. | Foil is shiny. An eraser is dull. |
Now open Chapter 6, Materials Around Us, in your NCERT book.