variables
in a controlled experiment, this is the factor that is intentionally changed by the scientist to test a hypothesis.
What is the independent variable?
When a scientist performs multiple trials of their own experiment.
What is repetition?
A representation of an object or process that is too large or too small to study directly.
What is a model?
This term describes scientific knowledge that is long-lasting and unlikely to change, but not "absolute truth."
What is durable?
A well-supported explanation of why or how something happens in the natural world.
What is a scientific theory?
This variable is the factor that is observed or measured to see if it changes in response to the experimenter's actions.
What is the dependent variable (or outcome variable)?
When a different scientist follows your procedures to see if they get the same results.
What is replication?
A globe or a plastic skeleton are examples of this specific type of model.
What is a physical model?
Scientific knowledge is open to change when this is discovered.
What is new evidence?
A description of what happens in nature under certain conditions, often using a mathematical formula.
What is a scientific law?
These are the factors in an experiment that must be kept exactly the same in every trial to ensure the test is fair.
What are controlled variables? (or constants)
This is the main reason scientists replicate each other’s work.
What is to ensure the reliability/validity of results?
This is a major limitation of all scientific models.
What is they are not exactly like the real thing/lack certain details?
This process involves experts in the same field checking a scientist's work before it is published.
What is peer review?
This is a common misconception: that a theory will eventually become one of these if it is proven enough.
What is a law?
This group in an experiment is kept under "normal" conditions and is used as a baseline to compare against the experimental group.
What is the control group?
If a scientist's results cannot be replicated by others, the original results are considered this
What is invalid or unreliable?
A weather map showing a hurricane's predicted path is this type of model.
What is a mathematical/computer model?
Science is durable because it is based on this, which is gathered through observation and experimentation.
What is empirical evidence?
The Kinetic Theory of Matter is a theory because it explains this about atoms.
What is their motion/how they move?
To maintain scientific validity, a standard experiment should only have this many independent variables at one time.
what is one?
To allow for successful replication, a scientist must keep these types of detailed, step-by-step records.
What are procedural notes/logs?
Scientists do this to a model when new evidence or better data becomes available.
What is modify or change the model?
Even though theories can change, they are rarely discarded entirely; instead, they are usually this.
What is refined or updated?
This is the main difference between a theory and a law.
What is a law describes a pattern, while a theory explains the cause?