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100+ Free MCAS Grade 8 Science Practice Questions

Pass your MCAS Grade 8 Science and Technology/Engineering Test exam on the first try — instant access, no signup required.

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Many flowering plants depend on bees to carry pollen from flower to flower, which lets the plants reproduce. In return, the bees gather nectar from the flowers for food. What type of relationship is this?

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Key Facts: MCAS Grade 8 Science Exam

The MCAS Grade 8 STE test is Massachusetts's free, NGSS-based state assessment that measures eighth-grade mastery of the 2016 STE standards across earth and space science, life science, physical science, and technology/engineering, using phenomenon-based selected-response and constructed-response items, with results reported as scaled scores in four achievement levels.

Sample MCAS Grade 8 Science Practice Questions

Try these sample questions to test your MCAS Grade 8 Science exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Two transverse waves travel through the same medium. Wave X has a much larger amplitude than Wave Y, but both waves have the same wavelength. How does the energy of Wave X compare to the energy of Wave Y?
A.Wave X carries more energy because it has a larger amplitude.
B.Wave X carries less energy because amplitude does not affect energy.
C.Both waves carry the same energy because they share the same wavelength.
D.Both waves carry the same energy because amplitude does not matter.
Explanation: For a wave of a given wavelength, energy increases as amplitude increases. A larger amplitude means the medium's particles move farther from rest, so Wave X transfers more energy than Wave Y.
2A region was covered by a shallow sea millions of years ago, where huge numbers of tiny marine organisms lived, died, and were buried under sediment. Today this region has large deposits of oil and natural gas. Which best explains this?
A.The buried remains of marine organisms were transformed into fossil fuels by heat and pressure over millions of years.
B.The shallow sea evaporated and left behind oil and natural gas as minerals.
C.Volcanic activity beneath the sea produced the oil and natural gas directly.
D.The ocean water itself slowly turned into oil and natural gas as it cooled.
Explanation: Fossil fuels such as oil and natural gas form from the buried remains of ancient organisms, mostly marine plankton, that were compressed and heated under layers of sediment over millions of years. Regions once covered by life-rich seas therefore tend to hold these deposits.
3Students designed several sets of stairs, all 100 cm tall, to help a small dog climb onto a sofa. The most important purpose is that the dog can safely climb each step. Which criterion is MOST important for evaluating the designs?
A.having a small enough height between steps for the dog to climb
B.being made from the lightest possible material
C.being able to hold the greatest possible mass
D.being built from the strongest available material
Explanation: In the engineering design process, criteria are judged against the problem's main goal. Since the goal is to let a small dog climb up, the height between steps is the criterion most directly tied to success.
4A cold, dry air mass moves toward a warm, moist air mass over a city. As the dense cold air pushes under the warm air, the warm air is forced upward. What will most likely happen to the weather in the city?
A.The air will become cooler and the skies will become cloudy as the lifted warm air condenses.
B.The air will become warmer and the skies will become clear.
C.The air will become cooler and the skies will become clear.
D.The air will become warmer and the skies will become cloudy.
Explanation: At a cold front, dense cold air wedges under warmer, moister air and forces it to rise. The rising warm air cools, its water vapor condenses into clouds, and the cold air mass moving in lowers the temperature.
5In a Canadian forest food web, both the Canada lynx and the red fox hunt and eat the snowshoe hare. Which best describes the relationship between the lynx and the fox?
A.competition, because they use the same food resource
B.predation, because one feeds on the other
C.mutualism, because both benefit from the relationship
D.parasitism, because one lives off the other
Explanation: When two species depend on the same limited resource, such as the snowshoe hare, they are in competition. The lynx and fox do not eat each other, so the interaction is competitive, not predatory.
6In a forest food web, white spruce uses sunlight to make food, the snowshoe hare eats the white spruce, and the Canada lynx eats the snowshoe hare. What are the correct ecological roles of these three organisms?
A.white spruce: producer; snowshoe hare: primary consumer; Canada lynx: secondary consumer
B.white spruce: producer; snowshoe hare: secondary consumer; Canada lynx: primary consumer
C.white spruce: primary consumer; snowshoe hare: producer; Canada lynx: secondary consumer
D.white spruce: secondary consumer; snowshoe hare: producer; Canada lynx: primary consumer
Explanation: Producers like white spruce make their own food through photosynthesis. The snowshoe hare eats the producer, making it a primary consumer, and the lynx eats the hare, making it a secondary consumer.
7A graph shows the population of Canada lynx rising and falling in regular cycles that peak about every ten years. These peaks are most likely caused by changes in the population of which organism?
A.the snowshoe hare, the lynx's main prey
B.the great horned owl, a predator of small animals
C.the grasses that grow on the forest floor
D.the white spruce trees in the forest
Explanation: Predator populations rise and fall with the populations of their prey. When snowshoe hares are abundant, lynx have plenty of food and increase; when hares decline, lynx soon decline too, producing matching cycles.
8Snowshoe hares have white fur in winter and brown fur in summer, helping them blend in with their surroundings. How does this camouflage most likely help the hares survive?
A.It makes them harder for predators to see, so more hares avoid being eaten.
B.It keeps their bodies warmer during the cold winter months.
C.It allows them to find food more easily in deep snow.
D.It lets them run faster than the predators chasing them.
Explanation: Blending into the background makes prey harder for predators to spot. Hares that are well camouflaged are less likely to be caught and eaten, so they survive and reproduce more successfully.
9Climate change is expected to reduce the number of days with snow on the ground in spring. Snowshoe hares that turn from white to brown earlier in spring will match the snowless ground sooner. Over many generations, what will most likely happen to the hare population?
A.More hares will change fur color early, because early-changing hares are better camouflaged and survive to reproduce.
B.Fewer hares will change color early, because predators prefer brown hares.
C.All hares will stop changing fur color, because the trait is no longer needed.
D.The hares will immediately learn to change color earlier within their own lifetimes.
Explanation: This is natural selection. With less spring snow, brown-early hares blend in better, avoid predators, and survive to reproduce more often. They pass on the early-change trait, so over generations more hares will change color early.
10A student pushes three identical blocks with different masses using the same force for the same time. Block Z, the heaviest at 1.8 kg, does not move at all (its speed stays 0 m/s). Which best explains why Block Z does not move?
A.A friction force equal in size and opposite in direction to the push balances it, giving zero net force.
B.There are no forces acting on Block Z at all.
C.The push force on Block Z is in the same direction as friction.
D.Gravity pulls Block Z backward, canceling the push.
Explanation: An object stays at rest when the forces on it are balanced. Friction acts opposite to the push and is equal in size for the heaviest block, so the net horizontal force is zero and the block does not move.

About the MCAS Grade 8 Science Exam

The MCAS Grade 8 Science and Technology/Engineering (STE) test is a Massachusetts state summative assessment that measures how well eighth graders have learned the 2016 Massachusetts STE Curriculum Framework, which is based on the Next Generation Science Standards (NGSS). It covers science and technology/engineering taught across grades 6 through 8 and is built around real-world phenomena and the application of science and engineering practices rather than simple recall. The test is given in two sessions, mostly on computer with a paper-based option as an accommodation, and uses multiple-choice, multiple-select, technology-enhanced, and constructed-response items. Questions are organized under four reporting categories that match the framework's content strands: Earth and Space Science, Life Science, Physical Science, and Technology/Engineering. Results are reported as scaled scores from 440 to 560 across four achievement levels, and the test is free to students.

Questions

100 scored questions

Time Limit

Untimed and given in two test sessions; students may take as much time as they reasonably need to finish.

Passing Score

Results are reported as a scaled score from 440 to 560 in four achievement levels; Meeting Expectations (a score of 500 or higher) or above indicates the student is on track in grade 8 science.

Exam Fee

Free for students; the assessment is funded by Massachusetts and administered through public school districts. (Massachusetts Department of Elementary and Secondary Education (DESE))

MCAS Grade 8 Science Exam Content Outline

One of four strands

Earth and Space Science

The solar system and Earth's place in space, plate tectonics, the rock cycle, Earth's systems and the water cycle, weather and climate, and Earth's resources and human impacts (MS-ESS1 through MS-ESS3).

One of four strands

Life Science

Cell structure and function, photosynthesis and cellular respiration, inheritance and variation of traits, ecosystem interactions and energy flow, and natural selection and evolution (MS-LS1 through MS-LS4).

One of four strands

Physical Science

Properties of matter, chemical reactions and conservation of mass, forces and motion, energy and its transformations, and waves including light and sound (MS-PS1 through MS-PS4).

One of four strands

Technology/Engineering

The engineering design process, criteria and constraints, prototypes and testing, evaluating competing design solutions, and the use of materials, tools, and technological systems.

How to Pass the MCAS Grade 8 Science Exam

What You Need to Know

  • Passing score: Results are reported as a scaled score from 440 to 560 in four achievement levels; Meeting Expectations (a score of 500 or higher) or above indicates the student is on track in grade 8 science.
  • Exam length: 100 questions
  • Time limit: Untimed and given in two test sessions; students may take as much time as they reasonably need to finish.
  • Exam fee: Free for students; the assessment is funded by Massachusetts and administered through public school districts.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

MCAS Grade 8 Science Study Tips from Top Performers

1Study all four content strands, earth and space science, life science, physical science, and technology/engineering, since each is a separate reporting category on the test.
2Practice applying concepts to new, real-world phenomena rather than just memorizing facts, because most items are built around scenarios you may not have seen before.
3Master core physical science ideas such as conservation of mass in reactions, forces and motion, energy transformations, and how waves carry energy.
4Review key life science ideas including cell structure, photosynthesis and respiration, inheritance and variation of traits, ecosystem energy flow, and natural selection.
5Learn earth and space science topics like plate tectonics, the rock cycle, the water cycle, weather and climate, and the motions of Earth, the Moon, and the solar system.
6Practice the engineering design process by identifying criteria and constraints, evaluating competing solutions with data tables, and reading models, graphs, and diagrams carefully.

Frequently Asked Questions

What is the MCAS Grade 8 Science and Technology/Engineering test?

It is Massachusetts's state summative science assessment for eighth graders, designed to measure mastery of the 2016 Massachusetts STE Curriculum Framework. It is given mostly on computer in two sessions and covers science and technology/engineering taught across grades 6 through 8.

What topics are on the MCAS Grade 8 STE test?

The test covers four content strands: earth and space science (plate tectonics, weather and climate, the water cycle, and astronomy), life science (cells, genetics, ecosystems, and evolution), physical science (matter, chemical reactions, forces, energy, and waves), and technology/engineering (the engineering design process).

How is the MCAS Grade 8 STE test scored?

Results are reported as a scaled score from 440 to 560 placed into one of four achievement levels: Not Meeting, Partially Meeting, Meeting, or Exceeding Expectations. A score of 500 or higher (Meeting Expectations or above) indicates the student is on track in grade 8 science.

How is the test structured and how long is it?

The grade 8 STE test is made up of two separate test sessions, each including selected-response questions (multiple-choice and multiple-select) and constructed-response questions. All MCAS test sessions are untimed, so students may take the time they reasonably need.

Is the MCAS Grade 8 STE test aligned to the NGSS?

Yes. The test is aligned to the 2016 Massachusetts Science and Technology/Engineering Curriculum Framework, which is based on the Next Generation Science Standards (NGSS). It emphasizes applying science and engineering practices and crosscutting concepts to real-world phenomena rather than simple recall.

Is the MCAS Grade 8 Science test free?

Yes. The test is free to students because it is funded by Massachusetts and administered through public school districts as part of the Massachusetts Comprehensive Assessment System (MCAS).