PSSA Review - Nature of Science

Front

What is an independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.

Front

What does it mean to accept or reject a hypothesis?

Back

Accepting a hypothesis means that the evidence supports it, while rejecting it means that the evidence does not support it.

Front

What is a natural event that occurs in a pattern?

Back

Examples include the lunar cycle, bird migration, and cell mitosis.

Front

What is the purpose of a microscope?

Back

Microscopes are used to make small objects appear large, allowing for detailed observation.

Front

What is the volume measurement in milliliters (mL)?

Back

Milliliters (mL) are a unit of volume in the metric system, commonly used to measure liquids.

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is a controlled variable?

Back

A controlled variable is a factor that is kept constant during an experiment to ensure that the results are valid.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics or qualities, while quantitative data involves numerical measurements.

Front

What is a scientific theory?

Back

A scientific theory is a well-substantiated explanation of an aspect of the natural world that is based on a body of evidence.