EQ: How do scientists explore the world?

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EQ How do scientists explore the world?

• Identify some of the unsafe activities occuring
  in this lab. What Lab Safety Procedures should
  be in place?

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Cornell NotesTo help me organize notes.

• Divide the paper into three sections.
• Draw a dark horizontal line about 5 or 6 lines
  from the bottom.
• Draw a dark vertical line about 2 inches from the
  left side of the paper from the top to the
  horizontal line.

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Cornell NotesTo help me organize notes.

• Write Notes
• The box on left is for key points.
• The large box to the right is for writing notes
  about the key points.
• Skip a line between ideas and topics
• Bottom section is for you to rewrite and
  summarize the main points in your own words.

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The Nature of Science

• Science is a way of learning more about the
  natural world.

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Science Skills

• Some of these skills include thinking, observing,
  predicting, investigating, researching, modeling,
  measuring, analyzing, and inferring.

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Observation vs Inference

• Observation- when all 5 sense are used to gather
  information. What you see is what you get- no
  assumptions.
•  
• Inference- to understand or interpret from an
  observation. Not a fact, but a suggestion as to
  what might be true.

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Scientific Statements

• Qualitative explains with words what is seen or
  observed. It is subjective due to it being open
  to interpretation.
• Quantitative stated using some sort of
  mathematical equation or notation. Describes the
  amount of what is observed.

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Scientific Law

• A rule that describes a pattern in nature is a
  scientific law.
• For an observation to become a scientific law, it
  must be observed repeatedly.
• A law does not attempt to explain why something
  happens. It simply describes a pattern.

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Scientific Theory

• An attempt to explain a pattern observed
  repeatedly in the natural world is called a
  scientific theory
• Theories in science must be supported by
  observations and results from many
  investigations.
• Theories can change. As new data become
  available, scientists evaluate how the new data
  fit the theory

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Scientific Method

• Identify the question/state the problem
• Make observations then form a hypothesis . A
  hypothesis is a reasonable and educated possible
  answer based on what you know and what you
  observe.
• Set up an experiment to test the hypothesis and
  collect data based on your observations.
• Analyze the data
• Draw conclusions based on your data

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Forming a Hypothesis

• Prediction- an educated guess as to what will
  happen based on prior knowledge or experience a
  forecast.
• A hypothesis is a reasonable and educated
  possible answer based on what you know and what
  you observe

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Variables

• Variables are factors that can be changed in an
  experiment.
• Two types
• Independent Variable The variable that is
  changed in an experiment . You control this
  variable. Ex. The amount of sunlight a plant
  gets during each day. You can move the plant
  from the sun and control the amount it gets.
• Dependent variable The change that occurs
  because of the independent variable. Ex. The
  plant without sunlight will not grow. The lack
  of growth is the dependent variable caused by the
  independent variable the amount of sunlight the
  plant gets.

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Variables contd

• Constant Something that is the same throughout
  the experiment. Ex. The plants are given the
  same amount of water each day.
• Control A standard used for comparison in an
  experiment. Ex. A plant of the same type is left
  in the sun as normal and its growth is monitored.

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Parts of an Experiment

• Title
• Problem
• Hypothesis
• Materials
• Procedure
• Data and observations
• Questions and conclusions