Free online practice test
ACT Reading Natural Science Mock Test 1
Enhanced ACT
Focus on Natural Science with 4 original questions in one dedicated practice session.
Syllabus-checked original practice
Mapped to the official Reading syllabus and answer-checked on 15 August 2026.
View official pattern sourceTest-day essentials
Know before you start
- The timer starts as soon as you click "Start test" and the test auto-submits when time runs out.
- Mark questions for review and return to them while their section or timing group is still open.
- Your answers and timer deadline are saved on this device, so a refresh can resume safely.
- After submitting, review section and topic scores, explanations, and source links.
About this ACT Natural Science sectional test
This sectional test isolates Natural Science from the ACT Reading pattern, so you can drill it on its own instead of only meeting it inside the full mock. It draws 4 original practice questions across 3 distinct topics, syllabus-checked the same as our full mocks.
Topics covered
Detail
2 questions
Inference
1 question
Main Idea
1 question
Scoring and result analysis
Correct answers earn 1 mark and wrong answers deduct 0 marks. Unattempted questions score zero. This section's 4 questions are difficulty-tagged: 1 easy, 2 medium, 1 hard. After submitting, you receive topic-wise accuracy, time spent, answer explanations, and source links.
Frequently asked questions
Is this an official ACT question paper?
No. It's an independent practice test with original Natural Science questions, mapped to the official ACT Reading syllabus and answer-checked on 15 August 2026.
How many questions are in this Natural Science sectional test, and how long is it?
4 questions in 4 minutes.
Which topics does this test focus on?
It spans 3 topics, with the heaviest coverage on Detail, Inference, and Main Idea.
Is there negative marking in this test?
No. This section carries no negative marking, so a wrong answer costs nothing beyond the mark you missed.
More ACT practice
15 other reviewed tests are published for this exam, and these are the nearest 6. The rest of this Reading stage comes first, then the other stages.
- Reading Full Mock Test 1 · 18 questions
- Rhetorical Skills Sectional Test 1 · 12 questions · English
- Pre-Algebra and Elementary Algebra Sectional Test 1 · 10 questions · Math
- Usage and Mechanics Sectional Test 1 · 13 questions · English
- Math Full Mock Test 1 · 24 questions · Math
- Science Full Mock Test 1 · 18 questions · Science