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Iowa State Assessments · Grade 8 Science

Iowa ISASP Grade 8 Science Practice Test

Build Grade 8 Iowa science readiness with five focused 10-question practice sets covering forces, energy, matter, cells, genetics, Earth systems, data, and engineering.

Iowa ISASP Grade 8 Science practice sets

This Iowa ISASP Grade 8 Science Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets cover physical science, life science, genetics, Earth and space systems, investigation design, data, models, evidence, and engineering.

Skills covered

  • Net force, speed, kinetic and potential energy, density, chemical reactions, atoms, circuits, thermal energy, and energy transformations
  • Cells, photosynthesis, cellular respiration, genes, natural selection, carrying capacity, food webs, body systems, reproduction, and biodiversity
  • Plate tectonics, rock cycles, greenhouse gases, weather fronts, Moon phases, seasons, ocean currents, groundwater, resources, and climate evidence
  • Variables, controls, repeated trials, associations, models, design constraints, measurement error, credible sources, claims, and graphs
  • Integrated Grade 8 reasoning with calculations, conservation, populations, climate data, circuits, genetics, plate boundaries, energy flow, and design criteria

How to use this page

Complete one 10-question set at a time. Identify the system, use the evidence in the question, apply the relevant scientific principle, and check the conclusion.

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

For the broader Iowa assessment hub, visit Iowa State Test Practice or explore Elementary School Tests, Middle School Tests, and High School Tests.

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

1. Test

Iowa ISASP Grade 8 Science Practice Questions

A 10-question Iowa ISASP Grade 8 Science practice set on physical science, with answers and explanations.

Read each scenario, equation, model, data description, or claim 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 happens when the net force on an object is not zero?

Please select an answer first.

Correct answer: A

The correct answer is The object accelerates..

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: An unbalanced net force changes an objects speed or direction.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

An unbalanced net force changes an objects speed or direction.

2. QuestionMultiple choice

A cyclist travels 150 meters in 30 seconds. What is the average speed?

Please select an answer first.

Correct answer: B

The correct answer is 5 meters per second.

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: Average speed is distance divided by time: 150 ÷ 30 = 5 meters per second.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

Average speed is distance divided by time: 150 ÷ 30 = 5 meters per second.

3. QuestionMultiple choice

Which change would increase the kinetic energy of a moving object?

Please select an answer first.

Correct answer: C

The correct answer is Increasing its speed.

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: Kinetic energy increases when the speed of an object increases.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

Kinetic energy increases when the speed of an object increases.

4. QuestionMultiple choice

A roller coaster car is at the top of a hill before moving downward. What energy is greatest?

Please select an answer first.

Correct answer: D

The correct answer is Gravitational potential energy.

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: The car has stored gravitational energy because of its height.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

The car has stored gravitational energy because of its height.

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 system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: Density equals mass divided by volume: 20 ÷ 5 = 4 grams per cubic centimeter.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

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

6. QuestionMultiple choice

Which observation is strongest evidence that a chemical reaction occurred?

Please select an answer first.

Correct answer: B

The correct answer is A gas forms and a new color appears..

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: Gas formation and a new color can indicate that new substances formed.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

Gas formation and a new color can indicate that new substances formed.

7. QuestionMultiple choice

Which statement best distinguishes an element from a compound?

Please select an answer first.

Correct answer: C

The correct answer is An element contains one kind of atom, while a compound contains bonded elements..

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: Elements contain one type of atom; compounds contain two or more elements bonded together.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

Elements contain one type of atom; compounds contain two or more elements bonded together.

8. QuestionMultiple choice

In a simple circuit, what happens when the switch is opened?

Please select an answer first.

Correct answer: D

The correct answer is The current path is broken..

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: An open switch interrupts the path, so current cannot flow through the complete circuit.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

An open switch interrupts the path, so current cannot flow through the complete circuit.

9. QuestionMultiple choice

Which material is generally the best conductor of thermal energy?

Please select an answer first.

Correct answer: A

The correct answer is Copper.

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: Copper transfers thermal energy more easily than the insulating materials listed.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

Copper transfers thermal energy more easily than the insulating materials listed.

10. QuestionMultiple choice

What energy transformation occurs in a flashlight when it is turned on?

Please select an answer first.

Correct answer: B

The correct answer is Chemical energy becomes electrical energy and then light energy..

  1. Identify the system: Determine whether the question involves forces, matter, cells, Earth systems, data, or an engineering design.
  2. Use the evidence: The battery stores chemical energy that is converted to electrical and light energy.
  3. Check the model: Confirm that the selected answer follows from the data, equation, diagram, or scientific principle.

The battery stores chemical energy that is converted to electrical and light energy.

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Frequently asked questions about Iowa ISASP Grade 8 Science Practice

What does Grade 8 Iowa ISASP Science practice include?

Grade 8 Iowa Science assessment practice includes forces, energy, matter, cells, genetics, ecosystems, Earth systems, data, models, engineering, and evidence-based reasoning.

Is Grade 8 included in Iowa Science assessment information?

Current Iowa Department of Education information lists Science for Grades 5, 8, and 11. Check the official Iowa page for current assessment updates and implementation details.

Are these official Iowa ISASP questions?

No. These are original supplemental practice questions. Use the official Iowa Department of Education pages for current blueprints, released materials, accommodations, policies, and testing procedures.