A type of test is an assessment used to measure a person's knowledge, skills, aptitude, or physical fitness. ENDURANCE is a type of test that measures a person's ability to sustain physical activity over a long period of time. ORAL tests are assessments that involve speaking and listening, such as interviews or presentations. LITMUS tests are tests used to determine the acidity or alkalinity of a solution. ACID tests are tests used to measure the acidity of a substance. ROAD tests are tests used to evaluate a person's driving skills. BETA tests are tests used to evaluate the performance of a product before it is released to the public. ESSAY tests are tests that require a person to write an ESSAY in response to a prompt. FINAL tests are tests given at the end of a course or program to assess a student's knowledge. TASTE tests are tests used to evaluate the flavor of a food or beverage. Openbook tests are tests that allow a person to use reference materials while taking the test.