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Nature of Science Notes con’t. From Graphing through tools. GRAPHING - An Important Skill. The 3 we’ll use most are: Line, Bar, Pie What’s the difference?. When constructing graphs, keep the following in mind:. Use line graphs to show changes over time frames
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Nature of ScienceNotes con’t From Graphing through tools
GRAPHING - An Important Skill • The 3 we’ll use most are: • Line, Bar, Pie • What’s the difference?
When constructing graphs, keep the following in mind: • Use line graphs to show changes over time frames DRY MIX is an excellent way to remember where to put the info on the x and y axes… • Use bar graphs to show comparisons at ONE point in time • Use pie charts to divide into percentages • ALWAYS give graphs a title, and label axes where appropriate
Theories vs. Laws • Theory – a well-tested explanation that unifies a broad range of observations in the natural world and is mainly supported by qualitative research • Law – describes what nature doesorwill do as long as certain conditions are met – it is mainly supported by quantitative research. • REMEMBER – you always start with a hypothesis!
Aristotle (384 –322 BC) • Proposed the theory of spontaneous generation • Idea that living things can arise from nonliving matter • Idea lasted almost 2000 years • Why did people believe this?
Figure 1-11 Pasteur’s Experiment Section 1-2 Broth is boiled. Broth is free of microorganisms for a year. Curved neck is removed. Broth is teeming with microorganisms. ?When did the microorganisms begin to grow in Pasteur’s experiment? Go to Section:
Theory of Biogenesis • Life begets life – only living things reproduce like living things • Replaced Theory of Spontaneous Generation • Only after work of countless scientists and many years did this change
What is Life? • Characteristics of Living Things In your group come up with a list of 8 characteristics all living things must share.
Characteristics of Living Things(must have ALL 8 to be considered living…) 1. Made up of units called cells - organized 2. Reproduce like organisms 3. Have DNA 4. Grow and develop 5. Homeostasis 6. Obtain and use materials and energy 7. Respond to stimulus/environment 8. Evolve
Technology • The making, modification, usage, and knowledge of tools, machines, techniques, crafts, systems, or methods of organization in order to solve a problem, improve a preexisting solution to a problem, achieve a goal or perform a specific function.
Tools used in Biology • There are MULTIPLE pieces of equipment that are used for various functions….see your handout of pictures, and match the picture letters to the defintions/descriptions!