Nature of Science Practice State Test - 2 answers

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

How does the density of water change with temperature?

Back

The density of water increases as the temperature decreases until it reaches 4°C, then it decreases as the temperature continues to drop.

Front

What is an independent variable in an experiment?

Back

An 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 dependent variable in an experiment?

Back

A dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

Why is repetition important in scientific experiments?

Back

Repetition is important to ensure that results are reliable and to minimize the impact of errors or anomalies.

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 hypothesis?

Back

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

Front

What is the purpose of a control group in an experiment?

Back

A control group is used as a benchmark to compare the effects of the independent variable, ensuring that the results are due to the variable being tested.

Front

What is the role of data in scientific research?

Back

Data is collected to provide evidence that supports or refutes a hypothesis, helping scientists draw conclusions.

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.