Unformatted text preview: What Is Science?
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Goals Investigate and understand nature
Explain events in nature
Make useful predictions
Never stop questioning Definition of Science
Definition An organized way of using evidence to learn about the natural world. The body of knowledge that scientists have built up after years of testing proposed explanations. Observations
Observations The first step to “doing” science
Involves using one or more of the senses Sight
Observations Will raise a question. Observations
Observations To gather… Information
Inference Follows an observation
A logical interpretation based on prior knowledge and experience
Uses what you know to figure something out Inference
Inference Observation or Inference?
The dogsdogisfriends.little inbeds.
There are are ishappy. bigbed. chair.
big dog stoleathe dogdog’s bed.
little a twonot thebig bed. the
is chair old.
mad. Observation or Inference?
Can we make the same assumptions (Inferences based on observations) about this picture as we did the last one? Observations
Observation: Owl perched in tree
Owls live in trees
The owl has wings,
Owls can fly
Hypothesis A tentative statement that proposes a possible explanation to some phenomenon or event Attempts to explain a set of observations
May arise from logical inferences Hypothesis
Hypothesis Uses prior knowledge
Is an educated guess or a trial answer
Is a testable statement which may include a prediction Importance of Science
Importance Science helps us to understand the world around us and to appreciate it's complexities
It underlies our health, our work, our communications, our entertainment and our transport
It permeates our lives and informs our actions
Science is a way of thinking, fun, dynamic, constantly changing Importance of Science
Importance Science contributes to our understanding of health and disease and enables medical progress
It shows us our impact on the environment and our world
It empowers us to make technological advancements
As scientific knowledge grows, so does our understanding of the universe What Science Isn’t
What Scientific knowledge is not the absolute truth
It is based only on available evidence
It is subject to modification in light of new evidence and new ways of thinking
Science is limited to the study of the natural world and cannot study or explain supernatural events A Unique Endeavor
Unique What three things make science different from other human endeavors? It deals only with the natural world
Scientists collect and organize information in a careful, orderly way, looking for patterns and connections between events
Scientists propose explanations that can be tested by examining evidence A Good Scientist:
Good What qualities make for a good scientist? Curious
Skeptical Patient and careful Recognize limitations of science
Believe in cause and effect
Concern for mankind ...
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