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I. Observations

I. Observations. The 1st step in science. What is observation?. Observations are made in science. They are made by using: Senses Tools increase accuracy & precision Facts not opinions. B. Two types of Observation. Qua l itative Qua n titative. C. Qualitative Observations.

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I. Observations

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  1. I.Observations The 1st step in science

  2. What is observation? • Observations are made in science. They are made by using: • Senses • Tools • increase accuracy & precision • Facts not opinions.

  3. B. Two types of Observation • Qualitative • Quantitative

  4. C. Qualitative Observations • Difficult to measure • Describes the qualities of something • Color • Taste • Sound • Texture Not opinions!!!

  5. D. Quantitative Observations • Can be expressed in numbers • Can be counted or measured • Amounts • Temperature • Mass • Length • Volume • Allow us to communicate specifics • Tools are used to communicate data • Observations are collected in data tables

  6. Inference • Drawing a conclusion based on data and observation • The process of drawing a conclusion from given evidence. Practice: • Observations: • I hear people screaming • I smell cotton candy, popcorn, and hamburgers • I see a lot of people • Inference = ?

  7. Observation Inference • That plant is wilted. • There are 20 mg of fluid • There were 10 elk • That plant is wilted due to a lack of water. • The clear fluid is water. • The elk are looking for food.

  8. Observation or Inference • There is a representation of a face on one side of the coin. • The coin is valuable • The date 1722 is printed on one side of the coin. • The coin was made in 1722. • The face on the coin is a representation of the nation's president.

  9. References • www.middleschoolscience.com/...Observation_Inference-isn.ppt • www.learnnc.org/lp/pages/998 • www.nps.gov/.../upload/Questioning_Artifacts-Observation_worksheet.pdf

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