Science Basics and Measurements

Front

What is the National Academy of Sciences' definition of science?

Back

Use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process.

Front

Why does science have limitations?

Back

Some questions are outside the realm of science because they deal with phenomena that are not scientifically testable.

Front

What are hypotheses in science?

Back

Tentative and testable statements that must be capable of being supported or not supported by observational evidence.

Front

What are scientific theories?

Back

Well-established and highly reliable explanations of scientific phenomena that are capable of being tested by multiple independent researchers.

Front

Define precision in scientific measurements.

Back

The closeness of two or more measurements to each other.

Front

Define accuracy in scientific measurements.

Back

The closeness of a measured value to a standard or known value.

Front

How many trials should be performed in experiments and why?

Back

Always perform 3 trials for accuracy and precision.

Front

How do you come to a conclusion in labs?

Back

Look at all of the data and form an educated opinion as to the goal or hypothesis.

Front

What are some ways that conclusions can be expressed?

Back

They can be written out or represented using a table, chart, or graph.

Front

What is the SI unit for length?

Back

Meter (m).