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Arizona ACT Aspire · Grade 9 · Science

Arizona ACT Aspire Science Practice Test: Grade 9

Build Grade 9 Arizona ACT Aspire Science readiness with five focused 10-question practice sets covering physical science, life science, Earth and space science, data, investigation, and engineering.

Arizona ACT Aspire Science Grade 9 practice sets

This Arizona ACT Aspire Science Practice Test: Grade 9 page provides five short practice sets with 10 original multiple-choice questions each. The sets support supplemental review across physical science, life science, Earth and space science, scientific investigation, data, and engineering evidence.

Skills covered

  • Chemical reactions, thermal energy, elements, circuits, forces, potential energy, density, conservation of mass, and waves
  • Cell structures, inherited traits, natural selection, decomposers, food chains, carrying capacity, biodiversity, and photosynthesis
  • Earth rotation, weather and climate, water cycle, plate tectonics, greenhouse gases, renewable energy, Moon phases, erosion, ice cores, and rocks
  • Variables, controls, graphs, repeated trials, association and causation, conclusions, outliers, source reliability, models, and testable claims
  • Engineering criteria and constraints, filters, stormwater, earthquake design, reaction data, solar panels, drought, invasive species, and scientific explanations

How to use this page

Complete one 10-question set at a time. Record evidence and units when needed, review each explanation, and distinguish a measured result from an assumption.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Arizona Department of Education or ACT Aspire guidance, official blueprints, accommodations, or testing schedules.

For the broader Arizona assessment hub, visit Arizona State Assessments.

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Arizona ACT Aspire Science Grade 9 Practice Questions

A 10-question Arizona ACT Aspire Science Grade 9 practice set on engineering and integrated science, with answers and explanations.

Read each science scenario carefully, choose one answer, and review the explanation after responding.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What should engineers identify before designing a solution?

Please select an answer first.

Correct answer: A

The correct answer is The problem, criteria, and constraints.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: Criteria describe success and constraints describe limits on the design.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

Criteria describe success and constraints describe limits on the design.

2. QuestionMultiple choice

A prototype water filter removes large particles but not dissolved salt. What should the team conclude?

Please select an answer first.

Correct answer: B

The correct answer is The filter meets one goal but needs another method for salt.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: The result identifies the filter's successful function and its limitation.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

The result identifies the filter's successful function and its limitation.

3. QuestionMultiple choice

Which design would best reduce stormwater runoff at a school?

Please select an answer first.

Correct answer: C

The correct answer is A rain garden that allows water to soak into soil.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: A rain garden captures water and increases infiltration.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

A rain garden captures water and increases infiltration.

4. QuestionMultiple choice

Why can flexible building materials help in an earthquake?

Please select an answer first.

Correct answer: D

The correct answer is They can move with some shaking instead of breaking suddenly.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: Flexibility can reduce damage caused by sudden ground motion.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

Flexibility can reduce damage caused by sudden ground motion.

5. QuestionMultiple choice

A graph shows that a reaction rate rises with temperature and then falls. What does the peak suggest?

Please select an answer first.

Correct answer: A

The correct answer is The reaction has an optimal temperature.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: The maximum point indicates the temperature where the measured rate is greatest.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

The maximum point indicates the temperature where the measured rate is greatest.

6. QuestionMultiple choice

Which evidence best supports that a solar panel powers a motor?

Please select an answer first.

Correct answer: B

The correct answer is The motor turns when light reaches the panel and stops when the panel is covered.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: The controlled observation connects light exposure with motor motion.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

The controlled observation connects light exposure with motor motion.

7. QuestionMultiple choice

A drought reduces plant cover in a grassland. What is a likely ecosystem effect?

Please select an answer first.

Correct answer: C

The correct answer is Plant-eating animals may decrease because less food is available.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: Less plant growth reduces the food supply for herbivores.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

Less plant growth reduces the food supply for herbivores.

8. QuestionMultiple choice

An invasive species has no natural predators in a new habitat. What may happen?

Please select an answer first.

Correct answer: D

The correct answer is Its population may grow and compete with native species.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: Without predators, the invasive population may use resources needed by native organisms.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

Without predators, the invasive population may use resources needed by native organisms.

9. QuestionMultiple choice

Which feature makes a design criterion useful?

Please select an answer first.

Correct answer: A

The correct answer is It can be measured to determine whether the design meets the goal.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: Measurable criteria allow engineers to compare a design with the intended goal.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

Measurable criteria allow engineers to compare a design with the intended goal.

10. QuestionMultiple choice

What makes a scientific explanation strong?

Please select an answer first.

Correct answer: B

The correct answer is It connects a claim to relevant evidence and scientific reasoning.

  1. Identify the evidence: Read the scenario, model, or data and identify the scientific evidence provided.
  2. Apply the science idea: Evidence and reasoning show why the claim follows from the observations.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and matches the question.

Evidence and reasoning show why the claim follows from the observations.

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Frequently asked questions about Arizona ACT Aspire Science Practice Test: Grade 9

Which Science skills are covered?

The page covers physical science, life science, Earth and space science, energy, ecosystems, data analysis, investigation, source evaluation, and engineering.

How many questions are included?

There are five practice sets with 10 questions each, for 50 questions in total. Each set can be completed separately.

Are these official ACT Aspire questions?

No. These are original supplemental practice questions. Check the latest Arizona Department of Education and ACT information for official materials, standards, accommodations, and policies.