A quiz is a form of game or mind sport, in which the players (as individuals or in teams) attempt to answer questions correctly. ... In some countries, a quiz is also a brief assessment used in education and similar fields to measure growth in knowledge, abilities, and/or skills.
A quiz is usually a short test, and often doesn't have a huge impact on your grades as a test has. Some teachers may even not use the quiz grade at all to determine your course grade. Quizzes are often several times given by teachers throughout a course