Hypothesis vs. TheoryHypothesis vs. Theory

Learning Goal 2Learning Goal 2

HypothesisHypothesis

Educated guessEducated guess Imaginative explanationImaginative explanation Logical inferenceLogical inference Best explanationBest explanation a scientist can a scientist can

provide provide at the at the beginning of an beginning of an experimentexperiment Usually found to be inaccurateUsually found to be inaccurate

Write a HypothesisWrite a Hypothesis

1.1. Does hot chocolate effect child Does hot chocolate effect child growth?growth?

2.2. Does sunlight effect mold growth?Does sunlight effect mold growth?

3.3. Can lemonade damage your Can lemonade damage your stomach?stomach?

TheoryTheory

Model of realityModel of reality Explanation Explanation supported by evidencesupported by evidence Unifying theme supported by many Unifying theme supported by many

experimentsexperiments Theories Theories may be supported, rejected, may be supported, rejected,

or modifiedor modified based on new evidence based on new evidence

Theory or Hypothesis?Theory or Hypothesis?

1.1. If I use miracle grow my plants will If I use miracle grow my plants will grow more quickly than if I use grow more quickly than if I use normal water.normal water.

Theory or Hypothesis?Theory or Hypothesis?

2.2. Plants and animals evolve slowly Plants and animals evolve slowly over millions of years. This is over millions of years. This is supported by the fossil record as supported by the fossil record as well as the living record.well as the living record.

Theory or Hypothesis?Theory or Hypothesis?

3.3. If there are not enough animals to If there are not enough animals to hunt, Wild dogs will scavenge for hunt, Wild dogs will scavenge for food.food.

Theory or Hypothesis?Theory or Hypothesis?

4.4. When I leave cells in a nutrient bath When I leave cells in a nutrient bath they will grow and divide faster they will grow and divide faster than they would in water.than they would in water.

Theory or Hypothesis?Theory or Hypothesis?

5.5. Light travels at a constant speed Light travels at a constant speed and nothing can travel faster than and nothing can travel faster than light. This is defined by Einstein’s light. This is defined by Einstein’s equations of relativity.equations of relativity.

Quick WriteQuick Write

1.1. What is a hypothesis?What is a hypothesis?

2.2. What is a theory?What is a theory?

3.3. What is the metric system?What is the metric system?

Closure QuizClosure Quiz

1.1. What metric unit is used for length? What metric unit is used for length? Volume? Mass/weight?Volume? Mass/weight?

2.2. What is a testable statement written What is a testable statement written before an experiment?before an experiment?

3.3. What is a model of reality supported What is a model of reality supported by evidence?by evidence?