For each of the following, indicate whether the item is a run-on or a comma splice by choosing RO or CS.
For help with this exercise, see Chapter 17.
example
Many of the helpful tools we use every day have long histories, the umbrella was invented in China in the fourth century c.e.
a. RO
b. CS
Lead pencils don’t really contain any lead they’re made out of graphite.
| A. |
| B. |
Lead hasn’t been used in pencils since the sixteenth century, it’s a good thing because lead is poisonous.
| A. |
| B. |
The ancient Egyptians, Greeks, and Romans used small lead discs to make lines on sheets of papyrus, then they wrote on the papyrus with ink and a brush.
| A. |
| B. |
During the fourteenth century European artists made drawings using rods of lead, zinc, or silver the technique was called silverpoint.
| A. |
| B. |
Wood-encased writing rods were used during the fifteenth century, they were the earliest pencils.
| A. |
| B. |
The modern pencil was developed in 1564 that’s when graphite was discovered in Borrowdale, England.
| A. |
| B. |
Graphite is a form of carbon it’s greasy and soft with a metallic luster.
| A. |
| B. |
Pencil “lead” is made by mixing graphite with clay and water, then the mixture is fed into a thin cylinder to create sticks.
| A. |
| B. |
More graphite in the mixture makes the pencil softer and blacker, more clay makes it harder and paler.
| A. |
| B. |
The sticks are cut into pencil-sized lengths then they are fired in a kiln at a temperature of about 2,200°F (1,200°C).
| A. |
| B. |