0
What else can I help you with?
Why is it possible to write on a blackboard with chalk?
Chalk is made of calcium carbonate, a soft mineral that leaves a visible mark when drawn on a rough surface like a blackboard. When drawn on the blackboard, chalk particles rub off and stick to the surface due to friction, creating a visible line.
What is the difference between a chalkboard and a blackboard?
There is no difference between a chalkboard and a blackboard; they are two different terms used interchangeably to refer to a smooth, dark surface on which you can write with chalk.
What is a white stick used for writing on a blackboard?
A chalk stick is used for writing on a blackboard.
Unit of measure of width of a blackboard?
Meter is used in finding the width of the blackboard.
What is a black board used for?
A black board is used as an instructional tool at the front of a classroom. A teacher uses a blackboard to write information about the subject they are teaching to a classroom.
What is blackboard used for?
it is used for chipping, cutting and filing on.
What exactly is a Cardiff Blackboard used for?
Blackboard is a program used at Cardiff University that helps students and professors connect. On Blackboard professors can post information such as readings, assignments, notices and due dates and students can have discussions and submit assignments there.
How often should you clean blackboard?
Everyday. The old traditional blackboard gets chalk dust build up on it as it is used.
Where can one purchase a used CMU blackboard?
One can purchase a used CMU blackboard from the website. CMU stands for Carnegie Mellon and the website has information on installing the blackboard course as well as any relevant updates to the material. Module one provides an insight into the program and how it is used.
What is electronic blackboard?
An electronic blackboard is a device used in virtual teaching. When a teacher uses this all students can see the information written on the board.
Why can you use chalk to write on the blackboard but not granite?
Chalk is softer than the slate (real or artificial) used on blackboards, so it will flake off as you write. Granite is harder than slate and will not flake, but rather cut into or mark the slate permanently.
Why does the blackboard seems black?
A blackboard appears black because it reflects very little light, absorbing most of the light that hits it. The dark color of the board helps to contrast with the white chalk used to write on it, making the writing clearly visible.
