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Which is true of graphite pencils? Select all that apply. (4 points) Responses They are made of a soft, natural material. They are made of a soft, natural material. They are rated according to how dark of a mark they make. They are rated according to how dark of a mark they make. The less clay there is in the pencil, the darker the mark it makes. The less clay there is in the pencil, the darker the mark it makes. The higher number of H (hardness) in a pencil rating, the more clay there is in the pencil. The higher number of H (hardness) in a pencil rating, the more clay there is in the pencil.

1 answer

The following statements about graphite pencils are true:

  1. They are rated according to how dark of a mark they make.
  2. The less clay there is in the pencil, the darker the mark it makes.
  3. The higher number of H (hardness) in a pencil rating, the more clay there is in the pencil.

The first statement, "They are made of a soft, natural material," is somewhat misleading. While graphite is a natural material, pencils also contain clay which is added to adjust hardness and darkness. Therefore, this statement can be seen as partially true but not wholly representative of the composition of pencils.

So the true statements without any ambiguity are the second and third ones.