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California State Test · CAASPP · Smarter Balanced · CAST

California State Test Practice

Build California assessment readiness with five focused 10-question practice sets covering reading, ELA, math, CAST science, data interpretation, models, and test reasoning.

California State Test practice sets

This California State Test Practice page provides five short practice sets with 10 original multiple-choice questions each. The sets support supplemental review connected to California CAASPP, Smarter Balanced ELA and Math, and CAST Science skills.

Assessment skills covered

  • Main idea, inference, text structure, vocabulary, evidence, summaries, metaphors, reliable sources, and data tables
  • ELA punctuation, precise revision, transitions, sentence combining, arguments, possessives, verb tense, relevance, thesis statements, and conclusions
  • Percent, equations, area, slope, mean, right triangles, probability, sequences, circumference, and rates
  • Photosynthesis, food webs, chemical changes, variables, fossils, energy flow, circuits, natural selection, habitats, and scientific graphs
  • Data associations, multi-step reasoning, models, graph scales, experimental evidence, measurement units, and reviewing explanations

How to use this page

Complete one 10-question set at a time. Mark uncertain questions, use evidence from the passage or data, and review the explanation for every missed or guessed answer.

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

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

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5 Tests
1. Test2. Test3. Test4. Test5. Test

4. Test

California State Test Practice Questions

A 10-question California state test practice set on cast science concepts and models, with answers and explanations.

Read each question 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 process allows green plants to use light energy to make food?

Please select an answer first.

Correct answer: A

The correct answer is Photosynthesis.

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: Photosynthesis uses light energy to help plants make food.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

Photosynthesis uses light energy to help plants make food.

2. QuestionMultiple choice

A food web shows grass eaten by rabbits and rabbits eaten by foxes. What role does grass play?

Please select an answer first.

Correct answer: B

The correct answer is Producer.

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: Grass makes its own food and provides energy to organisms that eat it, so it is a producer.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

Grass makes its own food and provides energy to organisms that eat it, so it is a producer.

3. QuestionMultiple choice

Which observation is evidence of a chemical change?

Please select an answer first.

Correct answer: C

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

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: Formation of a new gas can indicate that a new substance was produced.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

Formation of a new gas can indicate that a new substance was produced.

4. QuestionMultiple choice

A student tests whether sunlight affects plant growth. Which variable should remain the same for all plants?

Please select an answer first.

Correct answer: D

The correct answer is The amount of water each plant receives.

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: Keeping water constant makes it easier to identify the effect of sunlight.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

Keeping water constant makes it easier to identify the effect of sunlight.

5. QuestionMultiple choice

A rock layer contains a fossil of a marine animal in a desert. What can the fossil suggest?

Please select an answer first.

Correct answer: A

The correct answer is The area may once have been covered by water..

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: A marine fossil can indicate that the area once had a water environment.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

A marine fossil can indicate that the area once had a water environment.

6. QuestionMultiple choice

What happens to most of the energy in a food chain as it moves from one level to the next?

Please select an answer first.

Correct answer: B

The correct answer is Much of it is used for life processes and released as heat..

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: Organisms use energy for life processes, and much of that energy is released as heat.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

Organisms use energy for life processes, and much of that energy is released as heat.

7. QuestionMultiple choice

A circuit has a battery, wire, bulb, and open switch. Why is the bulb off?

Please select an answer first.

Correct answer: C

The correct answer is The circuit is not a complete path for current..

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: An open switch breaks the conducting path, so current cannot flow through the bulb.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

An open switch breaks the conducting path, so current cannot flow through the bulb.

8. QuestionMultiple choice

A population of insects becomes more resistant to a pesticide over generations. What process best explains this change?

Please select an answer first.

Correct answer: D

The correct answer is Natural selection.

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: Inherited variation can cause resistant insects to survive and reproduce more successfully.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

Inherited variation can cause resistant insects to survive and reproduce more successfully.

9. QuestionMultiple choice

Which observation best supports the claim that a habitat is becoming drier?

Please select an answer first.

Correct answer: A

The correct answer is A stream has less water and drought-tolerant plants are increasing..

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: Less stream water and drought-tolerant plants are evidence of drier conditions.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

Less stream water and drought-tolerant plants are evidence of drier conditions.

10. QuestionMultiple choice

A graph shows that enzyme activity is highest at 37 degrees Celsius and lower above or below that temperature. What does the peak represent?

Please select an answer first.

Correct answer: B

The correct answer is The temperature at which activity is greatest under the tested conditions.

  1. Identify the task: Determine whether the question asks for a detail, relationship, calculation, model, evidence, or revision.
  2. Use the evidence: The highest point of the graph represents the maximum measured activity.
  3. Check the answer: Choose the option that directly answers the question and is supported by the text, data, model, or stated conditions.

The highest point of the graph represents the maximum measured activity.

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Frequently asked questions about California State Test Practice

Which California assessment skills are covered?

The page covers CAASPP and Smarter Balanced reading, ELA, math, CAST science, data interpretation, models, evidence, and test reasoning.

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 California assessment questions?

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