Hypotesis
What is a hypothesis?
A testable statement predicting the outcome of a scientific investigation.
What is an experiment?
A procedure carried out to test a hypothesis
What is a variable?
Any factor that can change in an experiment.
What is bias in research?
A tendency to favor one outcome over another, which can skew results.
What is a scientific theory?
An explanation based on a body of evidence that has stood up to repeated testing
How do you formulate a hypothesis?
By making an educated guess based on observations and existing knowledge
Why are experiments important?
They allow scientists to investigate and understand phenomena
What is an independent variable?
The factor that is deliberately changed in an experiment.
How can bias affect results?
It can lead to inaccurate conclusions and misinterpretation of data.
What is a scientific law?
A statement that describes an observable phenomenon, often expressed mathematically.
Give an example of a hypothesis
If plants receive more sunlight, then they will grow taller.
What is a control in an experiment?
A standard for comparison that remains unchanged during the experiment
What is a dependent variable?
The factor that is measured in response to changes in the independent variable.
Give an example of bias in an experiment.
A researcher only selecting data that supports their hypothesis.
How do theories differ from laws?
A theory explains why something happens, while a law describes what happens
What is the role of a hypothesis in the scientific method?
It provides a basis for experimentation and guides the research process
Describe a well-designed experiment.
It includes clear variables, controls, and a systematic procedure for data
Why are constants important?
They ensure that the experiment remains fair and valid by controlling other variables.
What steps can minimize bias?
Using random sampling, blinding, and peer review.
Give an example of a scientific law.
Newton's Law of Universal Gravitation
How can a hypothesis be tested?
By conducting experiments and collecting data to support or refute it
How do you analyze experimental data?
By using statistical methods and comparing results to determine significance
How do you identify variables in an experiment?
By examining the purpose and design of the experiment to see what factors are tested.
How does bias differ from objectivity?
Bias is influenced by personal feelings, while objectivity is based on facts and evidence.
How are theories developed in science?
Through extensive research, experimentation, and validation of hypotheses over time.