Asked in Earth Sciences
What happens to the slate if these conditions increase?
The slate or slate changes into schist
Asked in History, Politics & Society
What did Victorian children write with?
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. ...