1.)What is Science?
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Transcript of 1.)What is Science?
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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.
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2.)SONAR
• SOund NAvigation Ranging
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2.)Sonar Images
• Titanic
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2.)Sonar Images
• 1
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3.)ROV
• Remotely Operated Vehicle• Used to investigate areas that are too
dangerous for humans or places we can’t travel yet.
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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.
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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”.
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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
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7.)Theory• An explanation to a PROBLEM that is
supported by extensive experimentation and tests.
• THEORY of RELATIVITY E=mc2
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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
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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.
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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.
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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
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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
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CONSTANT
• Something in an experiment that stays the same.
• The amount of sunlight, water, fertilizer…etc.
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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)
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Observational Study vs. Controlled Experiment
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13.) Graph
• A graph represents information gained from a data table.
• It is a way to “show what is known”
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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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