ACT Science: The Conflicting Viewpoints Passage
Master the ACT Science conflicting viewpoints passage — tracking each scientist's hypothesis, comparing their reasoning, and answering agreement and disagreement questions — with worked examples.
The Short Version
- The conflicting viewpoints passage presents two or more scientists with competing explanations.
- It's the most reading-heavy ACT Science passage — usually with few or no figures.
- Summarize each scientist's main claim in a sentence before comparing.
- Questions test agreement, disagreement, and how one scientist would respond to another. ACT only.
Most ACT Science passages are about data. One is about ideas. The conflicting viewpoints passage presents two or more scientists (often "Scientist 1" and "Scientist 2," or competing "Hypotheses") who explain the same phenomenon differently. There's little or no data to read — instead it's dense argument, much like a dual reading passage. The method is the same: master each view on its own, then map where they agree and clash.
This guide gives you a workflow for the conflicting viewpoints passage, with worked and practice examples matched to the real ACT at Northside Tutoring.
Why This Passage Is Different
The conflicting viewpoints passage is the most reading-intensive part of the ACT Science section and the one least about charts. Students who treat it like the data passages struggle; students who treat it like a comparative reading passage thrive. Since the SAT has no science section, this is a uniquely ACT challenge.
How It's Built
You'll get an introduction describing a phenomenon, then two or more competing explanations — each a few paragraphs from a different scientist or hypothesis. The viewpoints usually agree on the basic facts but disagree on the cause or mechanism.
Pin Down Each Viewpoint
After reading each scientist's section, summarize their core claim in one sentence: "Scientist 1: the craters were formed by volcanoes; Scientist 2: they were formed by meteor impacts." This short summary is the tool you'll use for every question.
Compare the Claims
Map where the viewpoints align and where they diverge. They often share starting facts (the craters exist, the data is real) but split on interpretation (what caused them). Pinpointing the exact point of disagreement is the heart of the passage.
Agree on facts, disagree on cause
Competing scientists usually accept the same observations but explain them differently. Many questions hinge on this: what would both accept, versus the one mechanism they argue about.
The Question Types
Expect three kinds: questions about one viewpoint (answer from that scientist's section), questions comparing both (use your summaries), and questions asking how new evidence would support or weaken a viewpoint (does it fit that scientist's claim?).
A Reliable Strategy
- Read the intro to understand the phenomenon.
- Read one viewpoint fully and summarize its claim before the next.
- Answer single-viewpoint questions from the relevant section.
- For comparison questions, use your one-sentence summaries and find the precise point of disagreement.
Where You'll See This — Test by Test
This is an ACT-only passage type — no SAT science section, and the SSAT doesn't test it. The comparison skill overlaps with reading dual passages.
ACT Science
The conflicting viewpoints passage is reading-heavy: track each scientist's claim and compare them.
Explore ACT Tutoring → College AdmissionsSAT
No SAT science section; this is an ACT-specific challenge among admissions tests.
Explore SAT Tutoring → K-12 CurriculumSchool Science
Evaluating competing explanations is central to scientific thinking in school.
Explore Science Tutoring → College AdmissionsACT
A distinct ACT Science passage that rewards a comparative-reading method.
Explore ACT Tutoring →Watch the Lesson
Sometimes a diagram needs a voice. In the short video below, one of our Northside tutors walks through the core idea and works through test-style problems in real time.
Conflicting Viewpoints — In Plain English
A live walkthrough from our tutoring team.
— Featuring a Northside Tutoring instructor
Worked Example Problems
These problems are calibrated to the difficulty you'll actually see on test day. Try each one before opening the solution.
Two scientists agree craters exist but disagree on their cause (volcanoes vs. impacts). What do they share?
Show solution
They agree on the observation (the craters exist); they disagree on the cause.
Scientist 1 says a phenomenon is caused by X. New evidence directly supports X. Whose view is strengthened?
Show solution
Scientist 1's — evidence consistent with their proposed cause supports their viewpoint.
What's the best first step on a conflicting viewpoints passage?
Show solution
Read the intro, then read and summarize one viewpoint fully before moving to the next.
A question asks how Scientist 2 would respond to a claim by Scientist 1. How do you answer?
Show solution
Apply Scientist 2's established position to that specific claim — use your summary of their view.
Why is treating this like a data passage a mistake?
Show solution
It has little or no data; it's argument-based. The skill is comparative reading, not figure reading.
Common Mistakes to Avoid
Three traps that catch students every year
- Blending the viewpoints. Read and summarize one fully before the next, or you'll attribute a claim to the wrong scientist.
- Treating it like a data passage. It's argument-heavy; use comparative-reading skills, not figure reading.
- Missing the precise disagreement. The scientists usually share the facts and differ only on cause — locate that exact split.
Practice Problems — You Try
Three problems below. Work each before checking the solution.
Two hypotheses explain the same fossil record differently. Where is their disagreement?
Show solution
In the interpretation/mechanism — not the fossils themselves, which both accept.
What tool makes comparison questions fast?
Show solution
A one-sentence summary of each viewpoint, written after reading each section.
New data contradicts a key prediction of Scientist 1 but fits Scientist 2. What is the effect on each view?
Show solution
It weakens Scientist 1's viewpoint (a failed prediction) and strengthens Scientist 2's (consistent evidence) — evidence cuts both ways at once.
The Northside Method — How We Teach This 1-on-1
Reading a blog is a great starting point. But there's a meaningful gap between understanding a concept and reflexively applying it under timed conditions. That gap is exactly what our tutors close.
Every Northside student works through a four-step framework:
- Assessment. We diagnose which specific skills are slowing your student down — not just whether they "get it" in the abstract.
- Perfect-match coach. We pair them with an elite tutor (we accept only the top 1% of applicants) whose teaching style fits how your student actually learns.
- Bespoke plan. A roadmap built around your student's target score, target timeline, and current pacing data.
- Data-driven adjustment. Every session ends with a check on whether the student's accuracy and speed are moving in the right direction.
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