1.
The softest graphite in your pencil case
2.
The Hardest Graphite in your pencil case
3.
Light bouncing on to the shadow side of an object
4.
area on an object closest to the light source
5.
the division between light and shadow on an object
6.
the shadow created by one object blocking light on another
7.
the darkest area on the shadow side, getting no reflected light
8.
a surface that is neither in direct light nor direct shadow
9.
parallel markings used to create tone
10.
perpendicular markings used to make tone
11.
using tightly overlapping markings to create a smooth tone
12.
using a tortillion qtip or other tool to smudge tones
