Which of the following statements is true about the strength of graphite?
Graphite is a very strong material.
Graphite is a very weak material.
The strength of graphite depends on the direction in which it is measured.
The strength of graphite is not affected by the direction in which it is measured.
Graphite is a highly anisotropic material, which means that its properties depend on the direction in which they are measured. The strength of graphite is much higher in the direction perpendicular to the layers than it is in the direction parallel to the layers.