In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Question: What property is the result of the force of gravity being opposed by the normal force? Answer: weight
Weight is the result of the force of gravity being opposed by the normal force.

Question: What type of energy travels through matter in wave form? Answer: sound
Sound energy travels through matter in wave form.

Question: What is the electrode at which reduction occurs called? Answer: cathode

The electrode at which reduction occurs is called the cathode.