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Published byReynard Fletcher Modified over 9 years ago
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Chapter 1
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Length: Measured in Meters, Centimeters, and Millimeters Mass: Measured in Grams and Kilograms Volume: Measured in Liters and Milliliters Temperature: Celsius
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Give me your definition
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Observing, Organizing and Analyzing experiments to gain evidence and recognize patterns
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Learning and understanding the NATURAL world only
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A process that is constantly changing – Open-minded – Skepticism “The only certainty in science is uncertainty”
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Based on curiosity and leads to discovery
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To help explain our world To help predict what is to come To make our lives better with the help of technology
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Scientific Methodology (or “Scientific Method”) – A series of “steps” that test a scientific question about an event
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Noticing and describing events in a careful way Ask questions that nobody else has
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Before a hypothesis we have inferences – A logical interpretation based on what you know This can lead to a hypothesis – Scientific explanation for a set of observations that CAN BE TESTED! – In the form of an “If/Then” Statement
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Best definition: Testable prediction Statement: Caffeine may cause sleeplessness in students Hypothesis: IF sleeplessness in students is related to caffeine, THEN students who intake a high amount of caffeine will have a higher chance to not fall asleep.
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Chlorophyll may be important for food production in plants. Environmental temp. may affect animal metabolism. Chocolate may cause pimples
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An experiment involves changing variables, or something that changes. An experiment where you change one variable is known as a controlled experiment Why would we want to change one thing?
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Independent Variable – The variable that you specifically change Dependent Variable – The variable that you observe and record data off of Control Group – The part of the experiment that gets the independent variable
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Any records of the experiment or observations made in the experiment is known as Data You need the right tools to do the job Look out for possible errors
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The evidence from the experiment is used to support, refute, or revise the hypothesis. – It does not prove it Usually, a new experiment is created to help strengthen the results After multiple tests, a valid conclusion can be draw
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The interactions between species and the environment
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The study of cell structure and function
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The study of DNA and how it is passed from generation to generation
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The study of microscopic organisms and their infectious diseases
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The study of plants
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The study of animals
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The study of structure and function of an organism’s body
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Technology is the use of science to make our lives easier and increase our knowledge of the natural world Advances in science lead to advances in technology and vice-versa
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Vital to modern science Scientists share their findings through articles – This allows peer review to happen where others can test and evaluate the findings This can then spark others to build upon the original experiment
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People want answers and that’s where science comes into play To use science involves understanding the limitations and how it affects society Science only explains natural matters and does not use ethical or moral viewpoints
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A particular preference or point of view that is personal, rather than scientific
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“I’ve got a theory” or “That’s just a theory” It is not a scientific theory This common theory is more like a hypothesis
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Well-tested explanation that brings together a board range of observations Can help make accurate predictions about new situations Theories are not proof just well explained and is the dominant view with scientists
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Cell Theory – Statements about all cells (Broad/General) – All living things are made out of cells – Prediction: If something is living, then you assume you would find it to be made out of cells
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A phenomenon which is always true Very Narrow Well-established Theories do not become laws but rather explain laws
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Law: Everything that has mass also has gravity Theory: Explains the movement of objects in the universe
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Personal beliefs as a result of interpreting the facts A truth known by actual experience or observation in nature
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See handout for vocabulary
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This class is known as Biology – It means study of life So what makes things living and nonliving? No one characteristic can solve this but we have a list of common characteristics that can help us decide
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All life is based on a universal genetic code This code is called DNA – Contains the information needed to live, grow, and reproduce
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Every organism has a pattern of growth and development
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Organisms detect and respond to stimuli from the environment Stimulus: Signal to which an organism responds
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They produce new organisms Sexual Reproduction – Cells from two parents unite and form the first cell of a new organism Asexual Reproduction – Single organism produces offspring identical to itself
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The inner body environment is constant even though the outside may not be This is known as Homeostasis
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All organisms need materials and energy to grow and develop The build up and break down of the energy in the body is known as metabolism
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Organisms are composed of one or more cells
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Over generations, groups of organisms change over time Evidence from comes from the fossil record, to the features of proteins to sequences in the DNA
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