Answer the following question in 3-4 complete sentences. Answer the following questions about pencil drawing:

- When were pencils first used?
- What is graphite?
- What is an HB pencil?
- What happens when the H# is increased?

-Pencil where first used in 1795.

-A soft black lustrous form of carbon that conducts electricity and use as lead in a pencil and electrolyte anodes, as a lubricant, and as a moderator in nuclear reaction.

- HB pencil is a types of pencil where h stands for hard and B stands for black which

means hard black pencil .

-When h# is increased the pencil will be harder.

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