Science - Chap 1

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Science - Chap 1
2012-09-26 19:07:16
life science

chapter 1 Prentice hall life science
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  1. science
    a way of learning about the natural world
  2. observing
    using one or more of your senses to gather information
  3. quantitative observation
    deal with numbers or an amount
  4. qualitative observations
    deal with descriptions that cannot be expressed in numbers
  5. inferring
    when you explain or inerpret the things you observe
  6. predicting
    making a forecast of what will happen in the future
  7. classifying
    the process of grouping things together that are alike in some way
  8. making models
    involves creating representations of complex objects or processes
  9. Life Science
    the study of living things
  10. Name five skills that are important in scientific thinking
    observing, inferring, predicting, classifying, and making models
  11. How do observations differ from inferrences?
    In observations you tell what you saw, in inferring you explain what you saw.
  12. scientific inquiry
    the diverse ways in which scientists study the natural world and propose explanations based on the evidence they gather
  13. hypothesis a possible explanation for a set of observations or answer to a scientific question.  Must be testable.
  14. variable
    a factor in an experiment that can change
  15. controlled experiment
    an experiment in which only one variable is manipulated at a time
  16. manipulated variable
    the one factor that a scientist changes driving an experiment; also called the independent variable
  17. responding variable
    the factor that changes as a result of the changes to the manipulated variable or independent variable; also called the dependent variable
  18. operational definition
    a statement that describes how to measure a particular variable or how to define a particular term
  19. data
    facts, figures, and other evidence gathered through observations
  20. communicating
    the process of sharing ideas with others through writing and speaking
  21. technology
    how people modify the world around themto meet their needs or to solve practical problems
  22. engineer
    a person who is trained to use both technological and scientific knowledge to solve practical problems
  23. Name the steps of scientific inquiry
    pose a question, form a hypothesis, design an experiment, collect and interpret data, draw conclusions, communicate
  24. What is meant by saying that a hypothesis must be testable?
    this means researchers must be able to carry out investigations and gather evidence that will either support of disprove the hypothesis
  25. What attitudes help scientists succeed at their work?
    curiosity, honesty, open-mindedness and skepticism, creativity
  26. What is the goal of technology?
    to imporve the way people live
  27. Why is good preparation important in lab investigations?
    Good preparation helps you stay safe when doing science activities.
  28. Identify two steps you should take to prepare for a lab.
    Read the procedure carefully and make sure you understand all the directions.  You should also review safety guidleines for the specific equipment you will be using.
  29. What should you do immediately after any lab accident?
    tell the teacher and follow any instructions they give you quickly
  30. What is the difference between science and technology?
    Science is the study of the natural world and technology modifies or changes the natural world to meet the needs of humans or solve problems.
  31. Is technology always good?
    No.  Technology can have both positive and negative effects on the world.