David Bamber
Eric Slatt
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Cast
Episode Guide
- 1. Suzy Arrives Feb 20, 1997
- One of the staffers dies.
- 2. The Interview Feb 27, 1997
- Eric Slatt interviews to be headmaster.
- 3. The Staff Meeting Mar 6, 1997
- The school gets unwanted media coverage.
Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor.
1. a. : a soft white, gray, or buff limestone composed chiefly of the shells of foraminifers. b. : a prepared form of chalk or a material resembling chalk especially when used (as for writing on blackboards) as a crayon. 2. a. : a mark made with chalk. b. British : a point scored in a game. chalky. ˈchȯ-kē. adjective. chalk. 2 of 2. verb.
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Oct 10, 2023 · Chalk is white or pale gray, fine-grained, and soft, with a powdery texture. It has a high calcium carbonate content, is chemically reactive, and can effervesce in contact with acids. Chalk is historically used in education and art, and its softness makes it ideal for rock climbing and gymnastics.
Chalk, soft, fine-grained, easily pulverized, white-to-grayish variety of limestone. Chalk is composed of the shells of such minute marine organisms as foraminifera, coccoliths, and rhabdoliths. The purest varieties contain up to 99 percent calcium carbonate in the form of the mineral calcite.
- The Editors of Encyclopaedia Britannica
chalk. / chôk /. A soft, white, gray, or yellow limestone consisting mainly of calcium carbonate and formed primarily from the accumulation of fossil microorganisms such as foraminifera and calcareous algae. Chalk is used in making lime, cement, and fertilizers, and as a whitening pigment in ceramics, paints, and cosmetics.
noun [ C/U ] us / tʃɔk /. Add to word list. Add to word list. a type of soft, white rock, or a similar substance, esp. in the shape of a stick and sometimes colored, used for writing or drawing. (Definition of chalk from the Cambridge Academic Content Dictionary © Cambridge University Press)
