Arizona AzSCI · Grade 8 · Science

Arizona Grade 8 AzSCI Science Practice Test

Build Grade 8 Arizona AzSCI readiness with five focused 10-question practice sets covering cells, genetics, ecosystems, matter, energy, Earth systems, engineering, and scientific evidence.

Arizona Grade 8 AzSCI practice sets

This Arizona Grade 8 AzSCI Science Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets support supplemental review across life science, physical science, Earth and space science, engineering, investigation, data, and scientific explanation.

Skills covered

  • Cell structures, cell division, genes, chromosomes, dominant traits, natural selection, fossils, competition, and biodiversity
  • Elements, chemical reactions, conservation of mass, particles, density, thermal energy, potential energy, circuits, forces, and waves
  • Tectonic plates, rocks, climate, greenhouse gases, carbon and water cycles, seasons, Moon phases, renewable energy, and Earth history
  • Variables, controls, association and causation, models, graphs, repeated measurements, precision, engineering constraints, prototypes, and CER responses
  • Integrated Grade 8 science practice with algae blooms, insulation, earthquake design, genotype and phenotype, climate data, energy transformations, filters, and invasive species

How to use this page

Complete one 10-question set at a time. Record the evidence that supports each answer, review the explanation, and revisit any model or data interpretation that caused an error.

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

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

2. Test

Arizona Grade 8 AzSCI Science Practice Questions

A 10-question Arizona Grade 8 AzSCI science practice set on matter, energy, forces, and waves, 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 is an element?

Please select an answer first.

Correct answer: A

The correct answer is A substance made of one type of atom.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: An element contains only one kind of atom.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

An element contains only one kind of atom.

2. QuestionMultiple choice

Which observation is evidence that a chemical reaction occurred?

Please select an answer first.

Correct answer: B

The correct answer is A gas forms when two substances are mixed.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: The formation of a gas can indicate that new substances formed.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

The formation of a gas can indicate that new substances formed.

3. QuestionMultiple choice

In a closed system, what happens to total mass during a chemical reaction?

Please select an answer first.

Correct answer: C

The correct answer is It remains constant.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: Atoms are rearranged, but matter is conserved in a closed system.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

Atoms are rearranged, but matter is conserved in a closed system.

4. QuestionMultiple choice

How do particles in a gas compare with particles in a liquid?

Please select an answer first.

Correct answer: D

The correct answer is Gas particles are generally farther apart and move more freely.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: The particle model describes gases as spread out and liquids as closer together.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

The particle model describes gases as spread out and liquids as closer together.

5. QuestionMultiple choice

An object has a mass of 20 grams and a volume of 5 cubic centimeters. What is its density?

Please select an answer first.

Correct answer: A

The correct answer is 4 grams per cubic centimeter.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: Density equals mass divided by volume: 20 / 5 = 4 grams per cubic centimeter.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

Density equals mass divided by volume: 20 / 5 = 4 grams per cubic centimeter.

6. QuestionMultiple choice

Thermal energy naturally moves from which object to which object?

Please select an answer first.

Correct answer: B

The correct answer is From the warmer object to the cooler object.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: Thermal energy transfers because of a temperature difference.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

Thermal energy transfers because of a temperature difference.

7. QuestionMultiple choice

Which object has the greatest gravitational potential energy?

Please select an answer first.

Correct answer: C

The correct answer is A ball held highest above the ground.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: Gravitational potential energy increases with height and mass.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

Gravitational potential energy increases with height and mass.

8. QuestionMultiple choice

Why does a bulb light when a switch closes a circuit?

Please select an answer first.

Correct answer: D

The correct answer is The closed path allows electric current to flow.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: A complete conducting path allows charge to move through the bulb.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

A complete conducting path allows charge to move through the bulb.

9. QuestionMultiple choice

What happens when the net force on an object increases while its mass stays the same?

Please select an answer first.

Correct answer: A

The correct answer is Its acceleration increases.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: For the same mass, a greater net force produces greater acceleration.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

For the same mass, a greater net force produces greater acceleration.

10. QuestionMultiple choice

What does wave amplitude describe?

Please select an answer first.

Correct answer: B

The correct answer is The maximum distance a wave moves from its rest position.

  1. Identify the evidence: Read the model, observation, or scenario and identify the scientific evidence provided.
  2. Apply the science idea: Amplitude measures the size of a disturbance and is related to energy carried by many waves.
  3. Check the conclusion: Make sure the conclusion is supported by the evidence and answers the question.

Amplitude measures the size of a disturbance and is related to energy carried by many waves.

Choose your next study path

Frequently asked questions about Arizona Grade 8 AzSCI Science Practice Test

Which Grade 8 science skills are covered?

The page covers cells, genetics, ecosystems, matter, energy, forces, waves, Earth systems, climate, engineering, data, and scientific evidence.

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 AzSCI questions?

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