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.
The meaning of CHALK is a soft white, gray, or buff limestone composed chiefly of the shells of foraminifers. How to use chalk in a sentence.
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.
What Is Chalk? Chalk is a variety of limestone composed mainly of calcium carbonate derived from the shells of tiny marine animals known as foraminifera and from the calcareous remains of marine algae known as coccoliths. Chalk is usually white or light gray in color. It is extremely porous, permeable, soft and friable.
Feb 23, 2021 · O n the British Geological Survey’s map, chalk is represented by a swathe of pale, limey green that begins on the east coast of Yorkshire and curves in a sinuous green sweep down the east coast,...
Jun 8, 2018 · Earth and the Environment. Geology and Oceanography. chalk. Chalk. views 2,041,871 updated Jun 08 2018. Chalk. Background. Chalk used in school classrooms comes in slender sticks approximately .35 of an inch (nine millimeters) in diameter and 3.15 inches (80 millimeters) long.
