What is Science? 1.1

What is Science? : Science is an organized way of gathering and analyzing evidence about the natural world

Goals of Science

• To provide natural explanations for events in the natural world
• To use those explanations to understand patterns in nature and to make useful predictions about natural events
• To provide solutions to problems

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Scientific Methodology

Scientific methodology involves observing and asking questions, making inferences and forming hypotheses, conducting controlled experiments, collecting and analyzing data, and drawing conclusions.

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The scientific method

Initial observation > Hypothesis > experiment > observation and analysis of data > Interpretation > final hypothesis supported

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Variables

Independent variable : The thing you change

Dependent variable : The data you collect

Control Variable : The thing you keep the same

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Living things

What are the characteristics of life?

Living things:

• evolve and adapt
• have homeostasis
• grow and develop
• have DNA
• Made up of cells
• React to stimuli
• reproduce

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Key Terminology

Biotic : Living things

Abiotic : Non-living things

DNA: Deoxyribonucleic acid (Universal Genetic Code)

Homeostasis : a self-regulating process by which biological systems maintain stability while adjusting to changing external conditions.

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