Unit 1 Lesson 2 Scientific Knowledge Copyright © Houghton Mifflin Harcourt Publishing Company.
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Transcript of Unit 1 Lesson 2 Scientific Knowledge Copyright © Houghton Mifflin Harcourt Publishing Company.
Unit 1 Lesson 2 Scientific Knowledge
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 1 Lesson 2 Scientific Knowledge
Florida Benchmarks
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• SC.6.N.2.2 Explain that scientific knowledge is durable because it is open to change as new evidence or interpretations are encountered.
• SC.6.N.3.1 Recognize and explain that a scientific theory is a well-supported and widely accepted explanation of nature and is not simply a claim posed by an individual. Thus, the use of the term theory in science is very different than how it is used in everyday life.
Unit 1 Lesson 2 Scientific Knowledge
Florida Benchmarks
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• SC.6.N.3.2 Recognize and explain that a scientific law is a description of a specific relationship under given conditions in the natural world. Thus, scientific laws are different from societal laws.
• SC.6.N.3.3 Give several examples of scientific laws.
• LA.6.4.2.2 The student will record information (e.g., observations, notes, lists, charts, legends) related to a topic, including visual aids to organize and record information and include a list of sources used.
Explain That!
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What are some types of scientific explanations?• Examples of scientific explanations are theories, models, and laws.
• A scientific theory is a well-supported explanation about the natural world.
• Explain observations scientists have made
• Undergo lots of testing• Based on Evidence
• Plate tectonics is an example of a scientific theory.
• Theories change over time
Unit 1 Lesson 2 Scientific Knowledge
What are some types of scientific explanations?• A scientific model is a representation of something in the natural world.
• Help scientists study things that may be to large or small to study otherwise
• Models can be computer programs, mathematical equations, physical representations, and maps.
• Scientists use models to help them understand past present and future events
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Unit 1 Lesson 2 Scientific Knowledge
What are some types of scientific explanations?• How does a model of Earth help scientists to visualize past events, such as the breakup of Pangaea?
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Unit 1 Lesson 2 Scientific Knowledge
What are some types of scientific explanations?• A scientific law is a basic principle of nature that always occurs under certain conditions.
• Laws tell scientists what to expect. They are eternal and unavoidable.
• Laws can be stated in many ways, including as equations or descriptions.
• Charles Law states as the temperature of a gas increase its volume increases
• Charles Law V1/T1 = V2/T2 or V1T2 = V2T1,
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Unit 1 Lesson 2 Scientific Knowledge
Unit 1 Lesson 2 Scientific Knowledge
Bending the Law
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• The law of gravity states that the attraction between two masses gets greater the larger the masses are and the closer they are.
• Albert Einstein proposed that large objects can bend space. Gravity is the result of smaller objects “falling” down this warped space.
Consider the Source
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What makes good scientific knowledge?
• The best scientific theories and models are those that can adapt to explain new observations.
• Scientific knowledge often is incomplete. As new evidence is presented, theories change.
• The goal of science is to explain as much as possible and be open to change.
Unit 1 Lesson 2 Scientific Knowledge
What makes good scientific knowledge?
• How did new scientific knowledge change the theory of light?
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Unit 1 Lesson 2 Scientific Knowledge
What makes a good source?
• Government, university, and nationally recognized research institutions usually are reliable sources.
• Publications that are more than a few years old are unreliable sources of information.
• Information made by those trying to sell a product often is unreliable.
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Unit 1 Lesson 2 Scientific Knowledge