how science works

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How Science Works

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How Science Works. Observing the World:. If you are a thinker, you question things that you observe. You try to find an answer. There are many ways to find these answers. If you are a scientific thinker you find your answer using the scientific method. Examples: - PowerPoint PPT Presentation

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Page 1: How Science Works

How Science Works

Page 2: How Science Works

Observing the World:

If you are a thinker, you question things that you observe. You try to find an answer.

There are many ways to find these answers. If you are a scientific thinker you find your answer using the scientific method.

Examples:Why is the sky blue? How did life come to be?How do plants grow taller? How do we grow

taller?

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Why is the Sky Blue?

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Good Scientists...• are skeptics: They question existing ideas

and new hypotheses.• are open-minded: They are always willing to

consider new ideas when evidence demands it• repeat experiment • keep up with new knowledge gained

through research*Many questions you have now or will have in the

future involve science. You must understand science to make intelligent decisions about such issues.

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How is Science Done?Scientists use the scientific method or

process. When scientists have a question about something in the world they use this method to find an answer:

»State the Problem or Question »Research»State a hypothesis»Design an experiment with a

control group, constants and variables»Analyze data/ results»Conclusion or Summary

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Important Skills used When Doing Science:

Observing- process of gathering information using your senses in a careful, orderly way

Inferencing- making a logical interpretation based on prior knowledge or experience

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Observing and Inferencing

For each picture write 3 observations.

Then write one inference.

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A Controlled Experiment– Control Group: Part of your experiment that is

not varied in anyway. You can compare your test groups to this set standard group.

– Independent variable- The change/difference you make in the experiment (the thing you are testing). Also called manipulated variable

– Dependent variable- The differences that result from the experiment, the resulting effect. Also called responding variable.

– Constants- Things in the experiment that do not change, kept exactly the same for each test group so they do not affect the results.

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Scientific Research has Debunked many common beliefs throughout time.

Some examples:

– Spontaneous Generation– The 4 Humors– Geocentrism

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What are some recent Scientific Discoveries?

• Skin cells into stem cells (2008)• The Hadron Collider and the discovery of the

“god particle” (2012)

Your Challenge:Find one new scientific discovery, preferably in your “field”, in the last 8 years.

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Let’s do a Controlled

Experiment!