What are the advantages of chalk?

Answer 1

The biggest advantage of a chalkboard is that it provides a fairly inexpensive way to write on the wall of a classroom to be seen by all students. Chalkboards have many disadvantages however, including the terrible sounds they make when scratched or touched by some things and the lack of flexibility and interaction offered by a dry-erase board or a SMART board.

Answer 2

Chalk has a great many uses. It's hard to describe specific advantages without having something to compare it to, however.

Chalk is a fine, powdered substance that can act as a drying agent (such as for billiards players and gymnasts), particularly for the hands, allowing the user to reduce friction (such as with a pool cue or uneven bars) and better control movement. Pool players also use chalk on the tips of their cue sticks where it has the opposite effect; the chalk helps the tip gently grip the cue ball as it's struck, allowing a greater degree of spin control while also reducing the occurrence of miscues.

It is also used to write or draw on chalkboards (usually made of slate) because of the ease of erasure, though this practice is gradually being replaced with dry-erase and wet-erase markers (because of the dust that chalk makes). Chalk has the advantage of being easier to see in a large classroom because of its color contrast with the slate.

Chalk is also used in construction to draw guidelines; there is even a device called a chalk line that resembles the housing of measuring tape, but has a yarn-like string inside that acts as a carrier for chalk, when is then pulled taut and plucked to create a straight chalk line on a piece of lumber or drywall.

It is non-toxic when ingested, though it can be hazardous when the dust is inhaled. Chalk is also relatively cheap, particularly when purchased in bulk, so used or broken pieces are of little concern.

Answer 3

daaa, if your wearing your best black dress it won't get ruined:D