Slate is a very hard but brittle sedimentary rock. It is mainly used as roofing tiles.
No slate is very hard and brittle.
Slate is a metamorphic rock that occurs naturally. It is hard enough to scratch glass and steel. It varies in color, red, grey-blue, green, black, and yellow-brown.
soft
hard
I believe its soft
Slate is a hard and brittle rock.
No slate is very hard and brittle.
Slate is a metamorphic rock that occurs naturally. It is hard enough to scratch glass and steel. It varies in color, red, grey-blue, green, black, and yellow-brown.
slate
Frank Eliscu has written: 'Slate and soft stone sculpture' -- subject(s): Sculpture, Slate sculpture 'Slate and soft stone sculpture' -- subject(s): Sculpture, Slate sculpture 'Direct wax sculpture' -- subject(s): Wax-modeling 'Sculpture, Techniques in Clay, Wax, Slate' -- subject(s): Modeling, Sculpture, Technique
At school it was normal to write with a slate penicil on a piece of slate (the slate pencil could be make of clay, soft slate, soapstone or chalk). The main advantage of slate was that it the marks could be erased and the slate could be reused.
You can write with a soft stone on a harder stone; writing with chalk on slate is a familiar example.You can also write with a hard stone on a softer stone, using the harder stone as an engraving tool. There are a lot of examples of this on paleolithic artifacts.
Hard
Soft information refers to qualitative data that is subjective and difficult to quantify, such as customer satisfaction or market trends. Hard information, on the other hand, refers to quantitative data that is objective and can be easily measured, like financial statements or production numbers. Soft information is typically more open to interpretation compared to hard information.
slate
it is hard and sometimes soft
hard