Get ahead with a $300 test prep scholarship
| Enter to win by Tuesday 9/24
Chem- Scientific Method
Terms in this set (28)
a process that involves a logical, but flexible, approach to problem solving.
the process by which n individual approaches a scientific question.
includes all facts, evidence, explanations, and theories that are supported by scientific investigations
a proposed answer to a scientific question based on existing information such as observation, background knowledge and logic.
a set of explanations from multiple experiments that covers a broad topic in science
a testable, falsifiable, and may be modified or rejected based on new evidence or ideas
the one factor that is changed b the person doing the experiment
the result of changing the manipulated (independent) variable
Normally called controlled variables, are variables that remain constant throughout an experiment, though other variables may change.
things, such as facts and measurements, that are gathered by making observations during the experiment.
How is scientific knowledge collected?
by doing scientific investigation
Why do scientists publish true results?
so they can collaborate with other scientists
What does a scientist's credibility depend on?
the accuracy and sharing the results
Can scientific theories be overturned?
he can be over turned by other theories or new evidence to prove it.
What is the difference between a hypothesis and a conjecture?
hypothesis- predictions about what will happen in an upcoming experiment
conjecture- a guess that might seem correct, but is not based on any observations or research, and i has never beem proven true
Compare a scientific explanation and a theory?
Theory- a set of explanations from multiple experiments that covers a broad topic in science
explanation- more than just plausible explanations; they are developed by analyzing the results of experiments and observations and are able to lead to accurate predictions
How are scientific theories and scientific laws similar?
they both are testable, falsifiable, and may be modified or rejected based on new evidence or ideas.
How are manipulated and responding variables different?
manipulated variable- factor that is changed by the person doing the experiment
responding variable- the result of changing the manipulated variable
Why are results more reliable with multiple trials?
t reduces the impact of resylts that vary the norm
How can the data be organized to make the observations clear and easy to understand?
the can be organized in tables, charts, and graphs so it is easier to see patterns and any relationship of one variable to another
use of the factors that surround a situation to determine that information
thing that are sensed or measured directly
data that can't be measured
data expressing a certain quantity, amount or range
How do Scientists simply the analysis of data?
they collect data through observations
List three types of graphs used in data analysis.
bar graphs, line graphs, circle graph
On a lie graph, what axis do we usually find the independent variable.
Using a school desk as an example, give 3 examples of quantitative data and 3 examples of qualitative data.
quantitative- number of legs, height, width
qualitative- wooden, metal, brown color