California CAA · Science · Grades 5, 8, and High School

California CAA Science Practice Test: Grades 5, 8, and High School

Build science readiness with five focused 10-question practice sets covering living systems, physical science, Earth and space, environmental resources, and scientific practices.

CAA Science practice sets

This California CAA Science Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets offer supplemental practice for Grades 5, 8, and high school across life science, physical science, Earth and space science, environmental systems, and scientific investigation.

Science skills covered

  • Living things, food and nutrients, plant roots, cells, populations, relationships, heredity, food chains, biodiversity, and reproduction
  • States and properties of matter, friction, energy, conductors, thermal transfer, forces, chemical change, circuits, and light absorption
  • Day and night, solar energy, runoff, erosion, shadows, the Moon, volcanoes, precipitation, fossils, and planetary orbits
  • Clean water, waste reduction, fish populations, forests, renewable resources, invasive species, trees, electricity, sediment, and pollinators
  • Investigation planning, tools, controlled variables, observations, graphs, repeated measurements, variables, models, reliability, and evidence

How to use this page

Complete one 10-question set at a time. Identify the observable evidence, choose the best-supported answer, and review every explanation before moving to the next set.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current California Department of Education guidance, official CAA materials, accessibility supports, or testing policies.

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

1. Test

California CAA Science Practice Questions

A 10-question California CAA Science practice set on life science and living systems, with answers and explanations.

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

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

Which feature shows that a plant is living?

Please select an answer first.

Correct answer: A

The correct answer is It grows and needs water..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Growth and the need for water are signs of a living organism.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Growth and the need for water are signs of a living organism.

2. QuestionMultiple choice

What do animals need to get from food?

Please select an answer first.

Correct answer: B

The correct answer is Energy and nutrients..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Food provides energy and nutrients animals need to live and grow.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Food provides energy and nutrients animals need to live and grow.

3. QuestionMultiple choice

Why do many plants have roots?

Please select an answer first.

Correct answer: C

The correct answer is Roots absorb water and help anchor the plant..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Roots take in water and help hold the plant in place.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Roots take in water and help hold the plant in place.

4. QuestionMultiple choice

What is one role of a cell membrane?

Please select an answer first.

Correct answer: D

The correct answer is It controls what enters and leaves a cell..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: The cell membrane helps regulate movement of materials into and out of the cell.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

The cell membrane helps regulate movement of materials into and out of the cell.

5. QuestionMultiple choice

A population of rabbits has less food during a drought. What may happen?

Please select an answer first.

Correct answer: A

The correct answer is Fewer rabbits may survive and reproduce..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Limited food can reduce survival and reproduction in a population.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Limited food can reduce survival and reproduction in a population.

6. QuestionMultiple choice

Which relationship helps both organisms?

Please select an answer first.

Correct answer: B

The correct answer is Bees get nectar while flowers are pollinated..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Both bees and flowering plants can benefit from pollination.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Both bees and flowering plants can benefit from pollination.

7. QuestionMultiple choice

Why are offspring similar to their parents?

Please select an answer first.

Correct answer: C

The correct answer is They inherit genetic information..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Inherited genetic information contributes to traits in offspring.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Inherited genetic information contributes to traits in offspring.

8. QuestionMultiple choice

What happens to energy as it moves through a food chain?

Please select an answer first.

Correct answer: D

The correct answer is Some energy is transferred and less is available at higher levels..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Energy is transferred between organisms, with less available at higher trophic levels.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Energy is transferred between organisms, with less available at higher trophic levels.

9. QuestionMultiple choice

Which action can help protect biodiversity?

Please select an answer first.

Correct answer: A

The correct answer is Protecting different habitats and native species..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Protecting habitats supports a wider variety of living things.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Protecting habitats supports a wider variety of living things.

10. QuestionMultiple choice

Why do organisms reproduce?

Please select an answer first.

Correct answer: B

The correct answer is To produce new organisms of the same kind..

  1. Identify the science idea: Read the situation and identify the observable science concept.
  2. Use the evidence: Reproduction allows a species to continue over generations.
  3. Check the choice: Choose the answer that best matches the evidence in the task.

Reproduction allows a species to continue over generations.

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Frequently asked questions about California CAA Science Practice Test

Which Science skills are covered?

The page covers supplemental living systems, physical science, Earth and space science, environmental resources, and scientific investigation practice for Grades 5, 8, and high school.

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 CAA Science questions?

No. These are original supplemental practice questions. Check the latest California Department of Education information for official materials, accessibility supports, standards, and policies.