Write 10 lines on importance of pencil.
Answers
Answer:
Pencil is a very important learning tool for children.
They learn to write and draw with it.
Pencils are made of wood, plastic, or metal.
There are many types of pencils such as pencils with thick lead and thin lead.
There are many companies that make pencils in India.
I hope it is useful for you.
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Explanation:
Pencils create marks by physical abrasion, leaving a trail of solid core material that adheres to a sheet of paper or other surface. They are distinct from pens, which dispense liquid or gel ink onto the marked surface.
Most pencil cores are made of graphite powder mixed with a clay binder. Graphite pencils (traditionally known as 'lead pencils') produce grey or black marks that are easily erased, but otherwise resistant to moisture, most chemicals, ultraviolet radiation and natural aging. Other types of pencil cores, such as those of charcoal, are mainly used for drawing and sketching. Coloured pencils are sometimes used by teachers or editors to correct submitted texts, but are typically regarded as art supplies—especially those with waxy core binders that tend to smear when erasers are applied to them. Grease pencils have a softer, crayon-like waxy core that can leave marks on smooth surfaces such as glass or porcelain.
The most common pencil casing is thin wood, usually hexagonal in section but sometimes cylindrical or triangular, permanently bonded to the core. Casings may be of other materials, such as plastic or paper. To use the pencil, the casing must be carved or peeled off to expose the working end of the core as a sharp point. Mechanical pencils have more elaborate casings which are not bonded to the core; instead, they support separate, mobile pigment cores that can be extended or retracted through the casing's tip as needed. These casings can be reloaded with new cores (usually graphite) as the previous ones are exhausted.
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