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Chalk is used because it is cheap, it shows up well on blackboards and is easy to erase.
Wiki User
∙ 9y ago
Wiki User
∙ 14y agoit cause some alergy .
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Differences of white boards and black boards?
White boards use Dry Erase Markers. Black boards use Chalk.
What do you mean by operation black board?
A black board is what some teachers have and some very lucky people have some too. They are a little bit like white boards but you need to write on white boards with white board pens and on black boards you need to use chork. You can use any length or any colour chork.
When do you use a black softball?
i dont think you would ever use a black softball
Why the black board is black if it is green?
because they are not called black boards they are called chalkboards
What is Fazer from NDUBZ's catch phrase?
No Dont Use Black Zebras
Why should you always be careful when using electricity?
dont touch with wety hand,dont use loose boards of electricity and also be used when reparing any cable also used gloves of electricity.
What kind eraser to use on white boards?
same eraser both on white boards and chalk boards?
When circuit boards are static how do you make them antistatic?
Dont understand the question! You mean that your circuit boards are charged with static electricity? If so, direct a flow of ionized air over the boards from an Ionizer suitable for use on electronics to neutralize the static electricity. To avoid the boards becoming charged again handle them on static dissipative working surface and wear an antistatic wriststrap. Carlos Neffe
What color background did general grant's shoulder boards have?
They were black. All General officer's shoulder boards were black until 1877 when the branch of service color could be worn instead.
Why are manufactured boards environmentally?
You use less numbers of trees for the same amount of manufactured boards than would have been needed for cut boards.
How do you properly contact a family member with ouija?
Ouija boards dont work
Where are all the electric bulliten boards in Pokemon black?
The electric bulletin boards are found in those things between routes and towns.
