Observation and Inference

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Topic 1

• Observation and Inference

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Topic 1 Observation and Inference

• Observation The use of one or more of the senses
  on a part of the environment.
• If you didnt see it, smell it, taste it, touch
  it or hear it, then there was no observation!
• Instruments Man made devices to enhance or
  extend ones senses.
• Ex rulers, scales, microscopes, telescopes.

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Observation and Measurement

• Inference An interpretation of one or more
  observations.
• An inference is an educated guess based on
  observations that you have made.
• INFERENCES CAN BE WRONG!!!!

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Observation and Measurement

• Classification The grouping together of similar
  objects, or properties, to make a study more
  meaningful.
• You can group things together by similar size,
  shape, and color, etc.

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Observation and Measurement

• Measurement A way of expressing an observation
  with greater accuracy.
• When we measure something, we assign a numerical
  value to that object or event.
• Length The distance between 2 points.
• Mass The amount of MATTER in an object.
• Matter Anything that has mass and occupies
  space.
• Volume The amount of space an object takes up.