Physical Science Unit 1 Study Guide 8th Grade

An "If/Then" statement is also known as what in the steps of the scientific method?

• Conclusion

• Hypothesis

• Summary

• Procedure

Answer explanation

An "If/Then" statement is a prediction that can be tested, making it a hypothesis in the scientific method. It proposes a relationship between variables, which is essential for experimentation.

The variable that is referred to as "DRY" is the ---- variable.

• Dependent

• Independent

Answer explanation

The variable referred to as "DRY" is the Dependent variable. In research, the dependent variable is the one that is measured and is affected by changes in the independent variable.

When conducting an experiment, you may change ---- variable.

• Two

• Four

• One

• None

Answer explanation

In an experiment, you can only change one variable at a time to isolate its effects. This is crucial for determining cause and effect, making 'One' the correct choice.

The --- variable is found on the y-axis.

• Dependent

• Independent

Answer explanation

The dependent variable is plotted on the y-axis in a graph, representing the outcome that changes in response to the independent variable, which is plotted on the x-axis.

The factors that remain the same in an experiment are known as -----.

• Variables

• Controls

• Constants

• Trials

Answer explanation

In an experiment, the factors that remain unchanged are called constants. They are essential for ensuring that the results are due to the variable being tested, rather than other influences. Thus, the correct answer is constants.

In a data table, the ---- variable is usually found in the left column.

• Independent

• Dependent

Answer explanation

In a data table, the independent variable is typically placed in the left column, as it is the variable that is manipulated or controlled to observe its effect on the dependent variable, which is usually found in the right column.

The term "MIX" refers to the --- variable.

• Dependent

• Independent

Answer explanation

The term 'MIX' refers to the independent variable because it is the variable that is manipulated or changed in an experiment to observe its effect on the dependent variable.

The title of an experiment and/or graph should contain both the ----- and ----.

• Independent variable and Summary

• Conclusion and Summary

• Dependent variable and Independent variable

• Dependent variable and Conclusion

Answer explanation

The title of an experiment or graph should include both the dependent variable and independent variable to clearly convey what is being tested and measured. This helps in understanding the relationship being analyzed.

The --- variable is located on the x-axis.

• Independent

• Dependent

Answer explanation

The independent variable is plotted on the x-axis in a graph. It is the variable that is manipulated or changed to observe its effect on the dependent variable, which is plotted on the y-axis.

This type of graph displays data as unconnected points that show a relationship between two sets of data.

• Histogram

• Circle graph

• Frequency Table

• Scatterplot

Answer explanation

A scatterplot displays data as unconnected points, illustrating the relationship between two variables. Unlike histograms or circle graphs, it focuses on individual data points rather than aggregated data.