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Alaska Science Assessment · Grade 8

Alaska Grade 8 Science Assessment Practice Test

Build Grade 8 Alaska science assessment readiness with five focused 10-question practice sets covering energy, ecosystems, Earth systems, engineering, data, and Alaska applications.

Alaska Grade 8 Science Assessment practice sets

This Alaska Grade 8 Science Assessment Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets support Grade 8 review across matter, energy, forces, cells, genetics, ecosystems, Earth systems, climate, engineering, data, and Alaska-related phenomena.

Skills covered

  • Chemical reactions, conservation of matter, density, energy, forces, waves, circuits, insulation, and magnetic fields
  • Cell functions, mitosis, alleles, food webs, carrying capacity, natural selection, homeostasis, and biodiversity
  • Plate movement, rocks, seasons, tides, weather fronts, greenhouse gases, groundwater, stars, eclipses, and Alaska earthquakes
  • Variables, correlation, control groups, models, optimization, peer review, uncertainty, fair tests, graphs, and evidence-based claims
  • Permafrost, salmon life cycles, sea ice, volcano monitoring, data interpretation, water quality, invasive species, and bridge testing

How to use this page

Complete one 10-question set at a time. Identify the evidence, connect it to the scientific model, and check whether the conclusion is supported by the data. Review each explanation after responding.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Alaska Department of Education and Early Development guidance, official assessment materials, accommodations, or testing schedules.

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

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Alaska Grade 8 Science Assessment Practice Questions

A 10-question Alaska Grade 8 Science Assessment practice set on earth, space, and climate systems, with answers and explanations.

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

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

What process inside Earth can help drive movement of tectonic plates?

Please select an answer first.

Correct answer: A

The correct answer is Convection caused by heat movement in the mantle.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: Heat-driven convection in the mantle contributes to the movement of tectonic plates.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

Heat-driven convection in the mantle contributes to the movement of tectonic plates.

2. QuestionMultiple choice

How can metamorphic rock form?

Please select an answer first.

Correct answer: B

The correct answer is Existing rock changes under heat and pressure without fully melting.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: Heat and pressure can change the minerals and texture of existing rock to form metamorphic rock.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

Heat and pressure can change the minerals and texture of existing rock to form metamorphic rock.

3. QuestionMultiple choice

Why does the amount of daylight change during the year?

Please select an answer first.

Correct answer: C

The correct answer is Earth axis tilt changes the angle and duration of sunlight during its orbit.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: Earth tilt causes each hemisphere to receive different amounts and angles of sunlight during the orbit.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

Earth tilt causes each hemisphere to receive different amounts and angles of sunlight during the orbit.

4. QuestionMultiple choice

What mainly causes ocean tides?

Please select an answer first.

Correct answer: D

The correct answer is Gravitational forces from the Moon and the Sun.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: The gravity of the Moon and Sun affects ocean water and contributes to the repeating pattern of tides.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

The gravity of the Moon and Sun affects ocean water and contributes to the repeating pattern of tides.

5. QuestionMultiple choice

What is a weather front?

Please select an answer first.

Correct answer: A

The correct answer is A boundary between air masses with different properties.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: A front forms where air masses with different temperatures or moisture meet and can produce changing weather.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

A front forms where air masses with different temperatures or moisture meet and can produce changing weather.

6. QuestionMultiple choice

How can increasing greenhouse gas concentration affect Earth energy balance?

Please select an answer first.

Correct answer: B

The correct answer is More outgoing heat can be absorbed and re-emitted in the atmosphere.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: Greenhouse gases interact with outgoing infrared energy and can increase the energy retained in the climate system.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

Greenhouse gases interact with outgoing infrared energy and can increase the energy retained in the climate system.

7. QuestionMultiple choice

How does precipitation become groundwater?

Please select an answer first.

Correct answer: C

The correct answer is Water infiltrates into soil and rock below the surface.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: Some precipitation soaks into the ground and moves through pores and cracks in soil and rock.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

Some precipitation soaks into the ground and moves through pores and cracks in soil and rock.

8. QuestionMultiple choice

What does the color of a star most directly indicate?

Please select an answer first.

Correct answer: D

The correct answer is Its surface temperature.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: Star color is related to surface temperature, with hotter stars appearing bluer and cooler stars appearing redder.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

Star color is related to surface temperature, with hotter stars appearing bluer and cooler stars appearing redder.

9. QuestionMultiple choice

What causes a solar eclipse?

Please select an answer first.

Correct answer: A

The correct answer is The Moon moves between the Sun and Earth.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: A solar eclipse occurs when the Moon alignment blocks some or all sunlight from reaching part of Earth.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

A solar eclipse occurs when the Moon alignment blocks some or all sunlight from reaching part of Earth.

10. QuestionMultiple choice

Why is the Aleutian region of Alaska prone to earthquakes?

Please select an answer first.

Correct answer: B

The correct answer is Active interactions between tectonic plates occur along the region.

  1. Identify the evidence: Read the data, model, or system described in the question.
  2. Apply the science idea: Plate interactions and subduction zones in the Aleutian region create stress and frequent earthquake activity.
  3. Check the conclusion: Confirm that the answer is consistent with the evidence and the Grade 8 science relationship.

Plate interactions and subduction zones in the Aleutian region create stress and frequent earthquake activity.

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Frequently asked questions about Alaska Grade 8 Science Assessment Practice Test

Which science skills are covered?

The page covers matter, energy, forces, cells, genetics, ecosystems, Earth systems, climate, engineering, data, and Alaska-related science applications.

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 Alaska assessment questions?

No. These are original supplemental practice questions. Check the latest Alaska Department of Education and Early Development information for official assessment dates, materials, accommodations, and policies.