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1.)What is Science?

1.)What is Science?. 1. The goal of science is to: investigate and understand nature, to explain events in nature, and to use those explanations to make useful predictions. 2. Science is an organized way of using evidence to learn about the natural world.

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1.)What is Science?

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  1. 1.)What is Science? • 1. The goal of science is to: investigate and understand nature, to explain events in nature, and to use those explanations to make useful predictions. • 2. Science is an organized way of using evidence to learn about the natural world. • 3. Science also refers to the body of knowledge that scientists have built up after years of using this process.

  2. 2.)SONAR • SOundNAvigationRanging

  3. 2.)Sonar Images • Titanic

  4. 2.)Sonar Images • 1

  5. 3.)ROV • Remotely Operated Vehicle • Used to investigate areas that are too dangerous for humans or places we can’t travel yet.

  6. 4.)Scientists and Explorers • Curiosity about the unknown • Organized method of exploration • Both use the technology of their times. • Both experiment in their own way.

  7. 5.)Scientific Method/Purpose • Scientists/Explorers need an organized, approach to solve a problem • There must be a way to collect and share dependable and repeatable data. • The scientific method keeps everyone “on the same page”.

  8. 6.)Hypothesis • After RECOGNIZING A PROBLEM in your world a HYPOTHESIS is used as an educated guess…a prediction about how a problem can be TESTED and what the outcome of that testing may be. • CAUSE AND EFFECT statements written in IF and THEN statements • IF the gum is chewed, THEN it will be easier to blow bubbles

  9. 7.)Theory • An explanation to a PROBLEM that is supported by extensive experimentation and tests. • THEORY of RELATIVITY E=mc2

  10. 8.)Law • A law is a well tested answer to how something in nature works. It must be true 100% of the time or it is not considered to be a LAW. • The scientific COMMUNITY must agree on the outcome to be a LAW. • NEWTON’S LAWS

  11. 9.)Hypothesis, Theory, Law • HYPOTHESIS-educated guess based on observations of a problem that needs to be investigated. • THEORY-well tested hypothesis…acceptable ideas but have not are cannot be PROVEN to be correct ALL THE TIME. • Law-theory that has been tested extensively worldwide and whose outcome happens EVERY TIME.

  12. 10.)Control • In an experiment a CONTROL is something you can compare what you are testing to. You must have an “ORIGINAL” to refer to.

  13. 11.)Dependent Variable • Located on the Y axis • It’s outcome is “dependent on the independent variable • It is usually a MEASURE of what happens in an experiment • It is the measured EFFECT of a CAUSE in an experiment

  14. 11.) Independent Variable • Located on the X axis • It causes an outcome that is measured • This is what is changed or manipulated in an experiment • It is the CAUSE in the cause and effect of an experiment

  15. CONSTANT • Something in an experiment that stays the same. • The amount of sunlight, water, fertilizer…etc.

  16. 12.)Observational Study vs. Controlled Experiment • Observational Studies are not influenced in any way by the scientist performing the experiment. Observe and record. • Controlled Experiments have a variable that is controlled by the scientist…the independent variable is determined by the person performing the experiment and the outcome measured (dependent variable)

  17. Observational Study vs. Controlled Experiment

  18. 13.) Graph • A graph represents information gained from a data table. • It is a way to “show what is known”

  19. Data Tables • Data must be recorded or it will be difficult to analyze the outcome of an experiment. • Data must be kept in an organized and understandable manner…DATA TABLES.

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