lesson 3
what is sustainability
Living on Earth in a way that allows humans to use its resources without depriving future generations of those resources
what is scientific methods
An objective method to explore the natural world, draw inferences from it, and predict the outcome of certain events, processes, or changes
Independent Variable
A variable that is not dependent on other factors
Disseminating Findings
A hypothesis is never confirmed by a single experiment
Science involves ongoing experimentation and and discussion
If a hypothesis has been tested repeatedly, confirmed by multiple groups of researchers, and is widely accepted, it becomes a theory.
Observing and Questioning
What are some problems that exist in a local scale?
What are some problems that exist on a regional scale?
How can we solve these problems?
How can we find the cause of these problems?
Impacts of Consumption
Developed vs. Underdeveloped Countries
Consumption is higher in developed countries
Populations higher in underdeveloped countries
Multiple examples of overexploitation
Fisheries
Forests
Qualitative Observations
non-numerical terms to describe a situation
Dependent Variable
A variable that is dependent on other factors
Interpreting Results
Can include a variety of techniques like graphs, charts, diagrams, and summaries
Scientists use this to interpret their results
Can include one of two types of reasonings
what is The Scientific Method
Scientists must do research in a way that is methodical
Scientific Method: An objective method to explore the natural world, draw inferences from it, and predict the outcome of certain events, processes, or changes
Quantitative Observations
numerical terms to measure or count something
Inductive Reasoning
Making a general statement from specific facts or data
Collecting Data
Scientists take sets of data by repeating the steps of their experiment in a process called replication
The number of times an experiment is the sample size
Ensures that data is both accurate and precise
hypothesis
is a testable, conjecture about how something works
Deductive Reasoning:
Making a general statement to specific facts or data
Forming Hypotheses
In each case, we are measuring variables (categories, conditions, traits, or factors that differ in the natural world or in experimental situations.