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Science In Our World Chapter 1

Science In Our World Chapter 1. Knowledge obtained by observing the natural world in order to discover facts Observe Get the Facts Test Ideas Formulate Laws. Science begins by … asking a question. Why is the sky blue?. Science. Why is the sky blue?.

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Science In Our World Chapter 1

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  1. Science In Our World Chapter 1

  2. Knowledge obtained by observing the natural world in order to discover facts Observe Get the Facts Test Ideas Formulate Laws Science begins by … asking a question. Why is the sky blue? Science

  3. Why is the sky blue? • A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light.  When we look towards the sun at sunset, we see red and orange colors because the blue light has been scattered out and away from the line of sight. • Remember light is a mixture of all colors of the rainbow.

  4. How can you find the answer? Research (Encyclopedias, Internet, Experts) Observation (Go to the source, watch carefully) Experimentation (Test your ideas) When a question is asked…

  5. Physical (3D) Mathematical Conceptual Volcanoes, Skyscraper (Graphical---Maps/Charts) Equations, numbers Classification of animal behaviors Models

  6. AFDAC = Scientific Method • Ask a question • F orm a hypothesis • D esign an experiment • A nalyze the Results • C onclude

  7. Theories are used to explain observations and predict what may happen Theory: explanation that ties together many related observations, facts, and tested hypotheses What happens when a theory and its models correctly predict the results of many experiments? Law: summary of many experimental results and observations, tells how things work Scientific Knowledge (Theories/Laws)

  8. Hypothesis = Educated Guess Theory = Possible explanation through tested hypothesis Law = Proven……… for now Hypothesis vs. Theory vs. Law

  9. Peer Review • Experts in a given field examine the results and conclusions of an experiment before it can be accepted for publication

  10. Measurement and Tools • Stopwatch = Time • Graduated Cylinder = Volume • Thermometer = Temperature • Triple Beam Balance = Mass • Spring Scale = Weight • Meter Stick = Distance

  11. Measurement and Units • Time = seconds • Volume = ml or cm3 • Temperature = degrees° • Mass = grams

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