This printable Earth science worksheet contains a set of carefully selected, quality, lesson-specific multiple-choice questions on Observation, Measurements, and Density. A great assessment resource to assign to your students for homework, classwork, practice, or review for a quiz, test, or exam. The 31 multiple choice questions in this worksheet focus on: Direct and Indirect relationshipsClassification, Inference, Measurement, ObservationLength, Mass, DensityPercent deviation / Percent