What Is Science? Vocabulary: Science- according to your textbook, Science is a way to organize and gather information about the natural world. Observation- to use one or more senses, to get information about your surroundings. Infer- to apply reason, in order to explain an observation. Estimate- to make a careful guess. Measure- an exact description of an observation compared to a standard unit. Predict-stating what you think might happen in the future. Classify- to group things together based on how they are alike, or similar. Analyze- to look for trends or patterns in data.