Observation, Using your five senses (sight, smell, touch, taste, hearing) to gather information about something., Question/Problem, The specific question you want to answer or the problem you want to solve during your investigation., Hypothesis, An educated guess or a possible, testable answer to your question, often written as an "If...then..." statement., Experiment, A planned test using controlled conditions to see if your hypothesis is correct., Data, The facts, measurements, and other evidence gathered during an experiment, Conclusion, A final summary that explains whether your data supported your original hypothesis and what you learned from the experiment., Independent Variable, The one thing the scientist changes on purpose in an experiment (the "cause")., Dependent Variable, The factor that is measured or observed; it changes because of the independent variable (the "effect")., Inference, A logical explanation or guess based on your observations and prior knowledge., Control Group, A group in the experiment that does not receive the special treatment (the independent variable) and is used for comparison., Analysis, o look closely at your data and results to find patterns and figure out what they mean., Procedure, The detailed, step-by-step directions you follow during an experiment to make sure it is a fair test and can be repeated by others., Qualitative Data, Descriptions using words (e.g., "The liquid turned red")., Quantitative Data, Information involving numbers and measurements (e.g., "The plant grew 5 cm")., Variable, Any factor or condition in an experiment that can change..

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