Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
--------
Question: Question: The distance between two crests of a wave of light is referred to as what, which is related to the color of light? Answer: wavelength

Answer: wavelength : The distance between two crests of a wave of light. The color of light is related to its wavelength. This is inversely proportional to frequency.

Question: Question: The joints of the carpal bones in the wrist are examples of what type of joints? Answer: planar joints

Answer: Figure 38.27 The joints of the carpal bones in the wrist are examples of planar joints. (credit: modification of work by Brian C. Goss).

Question: Question: Alkenes react with what to form dihalides? Answer: halogens

Answer:
Alkenes can react with halogens to form dihalides.