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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