ACT Final Review

Front

What is a dependent variable?

Back

A dependent variable is the variable that is measured in an experiment. It is affected by changes in the independent variable.

Front

On which axis is the dependent variable placed in a graph?

Back

The dependent variable is placed on the Y-axis.

Front

What does concision mean in writing?

Back

Concision refers to the quality of being clear and brief in writing, avoiding unnecessary words.

Front

What is the importance of checking the shortest answer choice in multiple-choice questions?

Back

The shortest answer choice is often the correct one because it tends to be more concise and direct.

Front

What is the significance of the triangular snowflake in scientific studies?

Back

The triangular snowflake confounded scientists because it appeared to defy basic laws of chemistry, prompting further investigation.

Front

What happens to water vapor molecules during the descent of a snowflake?

Back

Water vapor molecules bump into the hexagonal structure of the snowflake, affecting its formation.

Front

What type of data does a graph showing temperature changes over time represent?

Back

It represents the change in temperature of a liquid over time in different containers.

Front

What are phase changes in materials?

Back

Phase changes refer to the transitions between solid, liquid, and gas states of a material due to temperature or pressure changes.

Front

What is the role of independent variables in experiments?

Back

Independent variables are the factors that are changed or controlled in an experiment to test their effects on the dependent variable.

Front

How can temperature affect the molecules in a material?

Back

Temperature changes can cause molecules to move faster or slower, leading to changes in the state or properties of the material.