Food Science

1. Food Science What is Science?

2. What is Science? 1A sci·ence/ˈsaɪəns/ Show Spelled[sahy-uhns] Show IPA noun a branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws: the mathematical sciences. systematic knowledge of the physical or material world gained through observation and experimentation. any of the branches of natural or physical science. systematized knowledge in general. knowledge, as of facts or principles; knowledge gained by systematic study.

3. Hypothesis 1B Hypothesis: tentative statements that must be capable of being supported or not supported by observational evidence. Hypotheses of durable explanatory power which have been tested over a wide ariety of conditions are incorporated into theories

4. Scientific Theories 1C Scientific theories are base on natural and physical phenomena and are capable of being tested by multiple independent researchers. Unlike hypotheses, scientific theories are well-established and highly reliable explanations, but they may be subject to change as new areas of science and technologies are developed

5. Hypothesis vs. Theories 1D What is the difference between a hypothesis and a theory? by Matt Slick A hypothesis is an attempt to explain phenomena.  It is a proposal, a guess used to explain something.  A theory is the result of testing a hypothesis and developing an explanation that is taken to be true about a phenomena.  A theory replaces the hypothesis. So, a person might make an observation and immediately form a hypothesis about why something happens the way it does.  He or she then tests the hypothesis and eventually develops a theory.  A hypothesis can be right or wrong, but a theory is supposed to be true based upon the scientific method.  So, when a hypothesis has been verified to be true, it becomes a theory.

6. Data 1F Qualitative Data: Data that approximates or characterizes but does not measure the attributes, characteristics, properties, etc., of a thing or phenomenon. Quantitative Data: Data that can be quantified and verified, and is amenable to statistical manipulation. What is difference? Qualitative data describes whereas quantitative data defines.

7. Key Terms 1G Analyze: to examine carefully and in detail so as to identify causes, key factors, possible results, etc. Evaluate: to judge or determine the significance, worth, or quality of; Assess: to evaluate the results of an experiment. Inference: to derive by reasoning; conclude or judge from premises or evidence; to guess; speculate; surmise; to hint; imply; suggest. Predict: to declare or tell in advance; prophesy; foretell: to predict the weather Trends: the general course or prevailing tendency Data: a body of facts; information

8. Scientific Method • Identify the Problem • Form of a Question • Gather Information • Research • Form a Hypothesis • Educated Guess • Test the Hypothesis • Experiment • Draw Conclusions • Hypothesis was Correct or Incorrect **These steps must be in order**

9. Parts of an Experiment • When performing an experiment, one must use safety precautions and plan well. • Experiments must contain a control and a variable. • The dependent variable “depends” on the independent variable • Example: Plant Growth & Fertilizer

10. THEORY • When a hypothesis is supported by a large body of scientific evidence, it become a(n) _________________. • Theory 