Skip to content

ACT Science Section: Comparing and Contrasting Information

The ACT Science section is a crucial part of the ACT exam, and it often poses a challenge for many test-takers. This section requires students to analyze and interpret scientific information presented in various formats, such as graphs, tables, and passages. One of the key skills tested in this section is the ability to compare and contrast information effectively. In this article, we will explore strategies and techniques to excel in the ACT Science section by mastering the art of comparing and contrasting information.

Understanding the ACT Science Section

Before delving into the specifics of comparing and contrasting information in the ACT Science section, it is essential to have a clear understanding of the section itself. The ACT Science section consists of 40 multiple-choice questions that need to be answered within a time limit of 35 minutes. The questions in this section are designed to assess a student’s scientific reasoning skills rather than their knowledge of specific scientific concepts.

The ACT Science section typically includes passages related to biology, chemistry, physics, and earth/space sciences. These passages are accompanied by data representation in the form of graphs, tables, and charts. The questions require students to analyze the given information, draw conclusions, make predictions, and evaluate experimental designs.

Importance of Comparing and Contrasting Information

Comparing and contrasting information is a crucial skill in the ACT Science section because it allows students to identify patterns, relationships, and trends within the given data. By comparing and contrasting different pieces of information, students can make connections and draw conclusions that may not be immediately apparent.

See also  ACT English and Writing: Punctuation and Style Tips

Additionally, comparing and contrasting information helps students to differentiate between relevant and irrelevant data. In the ACT Science section, there is often an abundance of information provided, and being able to compare and contrast allows students to focus on the most important details and disregard the rest.

Strategies for Comparing and Contrasting Information

Now that we understand the importance of comparing and contrasting information in the ACT Science section, let’s explore some strategies that can help students excel in this skill:

1. Identify Key Variables

When analyzing scientific data, it is essential to identify the key variables involved. Variables are the factors that can change or be manipulated in an experiment. By identifying the key variables, students can compare and contrast how changes in one variable affect another.

For example, if a graph shows the relationship between temperature and enzyme activity, the temperature would be the key variable. By comparing different temperature values and their corresponding enzyme activity levels, students can identify patterns and draw conclusions about the relationship between temperature and enzyme activity.

Patterns and trends are often present in scientific data, and identifying them can provide valuable insights. When comparing and contrasting information, students should look for recurring patterns or trends that emerge from the data.

For instance, if a table shows the growth rate of different plant species over time, students can compare the growth rates of each species and identify any patterns. They may notice that certain species have a higher growth rate initially but plateau over time, while others show a steady increase throughout the observation period.

See also  SAT and ACT Math: Tips and Tricks for High Scores

3. Pay Attention to Units and Scales

Units and scales play a crucial role in interpreting scientific data accurately. When comparing and contrasting information, students should pay close attention to the units and scales used in the graphs, tables, or passages.

For example, if a graph shows the relationship between distance and time, students need to ensure that they are comparing distances and times that are measured in the same units. Comparing distances in kilometers to times in minutes would yield inaccurate conclusions.

4. Use Comparative Language

Using comparative language is an effective way to compare and contrast information in the ACT Science section. Students should use words and phrases such as “compared to,” “in contrast,” “similarly,” and “on the other hand” to highlight similarities and differences between different pieces of information.

For instance, when comparing two graphs that show the growth rates of different plant species, students can use comparative language to describe how one species had a higher growth rate compared to another species during a specific time period.

5. Practice with Sample Questions

Lastly, the best way to improve the skill of comparing and contrasting information is through practice. Students should regularly practice with sample questions from the ACT Science section to familiarize themselves with the types of comparisons and contrasts that are commonly tested.

By practicing with sample questions, students can develop a better understanding of how to approach different types of data representation and how to effectively compare and contrast information within the given time constraints.


The ability to compare and contrast information is a crucial skill for success in the ACT Science section. By mastering this skill, students can analyze scientific data more effectively, identify patterns and trends, and draw accurate conclusions. The strategies discussed in this article, such as identifying key variables, looking for patterns, paying attention to units and scales, using comparative language, and practicing with sample questions, can help students improve their ability to compare and contrast information. With consistent practice and a solid understanding of these strategies, students can approach the ACT Science section with confidence and achieve their desired scores.

Leave a Reply

Your email address will not be published. Required fields are marked *