Free Practice Questions for DC CAPE 2.0 Science Grade 8

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Exam Review

Key Facts: DC CAPE 2.0 Science Grade 8 Exam

Grade 8

Official DC CAPE 2.0 tested grade/course (OSSE FAQ Q4)

osse.dc.gov CAPE 2.0 FAQ

58 items

Items per science form: two units of 29; 40 operational items / 58 points

DC CAPE 2.0 Science Blueprint

Free

No student exam fee for standard school administration

OSSE Assessments policy

SY 2026–27

First DC CAPE 2.0 administration (spring 2027)

OSSE CAPE 2.0 page / FAQ

OSSE

State education agency administering DC CAPE 2.0

osse.dc.gov

Pearson

Administration platforms ADAM / TestNav; science content vendor

OSSE CAPE 2.0 FAQ Q3

NGSS

Content standards alignment

OSSE CAPE 2.0 FAQ Q5

4 levels

Performance levels; Level 3 = met expectations

OSSE CAPE 2.0 page

Untimed

Official tests designed as untimed with estimated session lengths

OSSE System Overview Feb 2026

DC CAPE 2.0 Science Grade 8 is DC's free OSSE CAPE 2.0 statewide science summative for Grade 8 (first admin spring 2027); practice here is English MCQ study only.

Sample DC CAPE 2.0 Science Grade 8 Practice Questions

Try these sample questions to review concepts for the DC CAPE 2.0 Science Grade 8 exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 111+ question experience with AI tutoring.

1A microscope shows a thin plant leaf cell with a green organelle packed along the cell edges. Which process is this organelle specialized to carry out?

A.Filtering wastes from the plant’s blood

B.Photosynthesis using light energy to build sugars

C.Producing sound waves for communication

D.Contracting to move the whole plant

Explanation: Chloroplasts contain chlorophyll and carry out photosynthesis, converting light energy into chemical energy stored in sugars. Middle school life science expects students to connect cell structures to functions.

2Which statement best describes a cell as the basic unit of life?

A.All living things are made of one or more cells that carry out life processes

B.Cells are energy waves that leave no mass when measured

C.Only animals have cells; plants are built only of nonliving minerals

D.A cell is any rock fragment smaller than one millimeter

Explanation: Cell theory states that all organisms are made of one or more cells and that cells carry out the processes of life. Rocks and energy waves are not living cells.

3A student models a cell membrane with a plastic bag that lets water and small sugar molecules pass but keeps large starch clumps inside. What property of the real membrane is this model meant to represent?

A.A permanent seal so the cell can never exchange materials

B.Rigid hardness that never allows any substance to cross

C.The ability of membranes to produce their own light

D.Selective permeability that controls what enters and leaves the cell

Explanation: Cell membranes are selectively permeable: some substances cross more easily than others. The bag model highlights controlled passage, not absolute blockage or light production.

4Mitochondria are more numerous in muscle cells that do a lot of work than in skin cells that do less work. What does this difference best support?

A.Cells that need more usable energy contain more mitochondria to release energy from food molecules

B.Mitochondria store genetic instructions instead of releasing energy

C.Skin cells do not need any energy at all

D.Mitochondria only appear in nonliving cells

Explanation: Mitochondria are the sites of cellular respiration that release usable energy from food molecules. Active muscle cells have high energy demand, so more mitochondria support that function.

5During cellular respiration, cells break down sugar molecules. Which statement best describes what happens to the energy?

A.Energy is created from nothing when the cell wishes to move

B.The sugar’s mass is destroyed completely and no products remain

C.The cell converts sugar directly into new atoms of iron

D.Chemical energy in sugar is released in a form the cell can use for life processes

Explanation: Cellular respiration releases chemical energy stored in sugar so cells can power activities. Matter is rearranged into products such as carbon dioxide and water; energy is transferred, not created from nothing.

6A food web shows grass → grasshopper → frog → snake. If a disease kills most grasshoppers, which outcome is most reasonable to predict first?

A.Grass populations will decrease because grasshoppers no longer keep them healthy

B.Snake populations will rise immediately because frogs are easier to catch

C.The grasshoppers' loss will affect only the grass, since the two are directly linked

D.Frog populations may decline because a main food source is reduced

Explanation: Frogs feed directly on grasshoppers in this web, so a sharp drop in grasshoppers removes the frogs' main energy source first. Effects on snakes further up the web follow later.

7Which process moves carbon from the atmosphere into living plants?

A.Combustion of wood, which only adds carbon to the air

B.Animal digestion that never involves carbon compounds

C.Photosynthesis, when plants take in carbon dioxide to build sugars

D.Melting of pure ice that contains no carbon compounds

Explanation: Photosynthesis incorporates atmospheric carbon dioxide into organic molecules. Combustion returns carbon to the air; ice melt does not move carbon into plants.

8In an energy pyramid, producers form the base and top predators form the tip. Why is there usually less energy available at higher levels?

A.Predators create unlimited new energy that never decreases

B.Much energy is used for life processes or lost as heat at each transfer, so less remains for the next level

C.Energy disappears completely between levels with no usable remainder ever

D.Producers destroy all energy before it can move up the pyramid

Explanation: Energy transfers in ecosystems are inefficient. Organisms use energy for growth, movement, and maintenance, and some is lost as heat, so less chemical energy reaches higher trophic levels.

9Two species of birds eat seeds of different sizes with differently shaped beaks. Over many generations, each species becomes better at using its preferred seed type. What process best explains this pattern?

A.Random weather alone guaranteeing that all birds have the same diet forever

B.Birds choosing to redesign their DNA each morning before feeding

C.Sudden creation of identical beaks in every bird overnight with no variation

D.Natural selection favoring traits that improve survival and reproduction in each niche

Explanation: Natural selection acts on heritable variation: birds with beak traits that better match available food tend to survive and reproduce more, so those traits become more common over generations.

10A population of insects includes individuals with different shell colors. Birds more easily spot and eat light-colored insects on dark tree bark. After several years, dark-colored insects are more common. Which claim is best supported?

A.The environment has no influence on which traits become common

B.All color differences are learned behaviors that never involve inheritance

C.Birds teach insects to change color at will each season

D.Traits that help individuals avoid predators can become more common through natural selection

Explanation: When predation removes more light-colored insects, dark-colored survivors leave more offspring if color is heritable, increasing the dark trait’s frequency—classic natural selection.

About the DC CAPE 2.0 Science Grade 8 Exam

District of Columbia Comprehensive Assessments of Progress in Education (DC CAPE) 2.0 Science — Grade 8 is the District of Columbia's grade/course-level DC CAPE 2.0 statewide summative assessment administered by OSSE beginning SY 2026–27 (first operational window spring 2027). It is aligned to the Next Generation Science Standards (NGSS) adopted by DC; science content is provided by Pearson with a redesigned two-section cluster/standalone design. Students test on Pearson TestNav (ADAM management). Official forms mix selected-response, technology-enabled, and constructed-response/performance tasks. OpenExamPrep free practice is an English-language four-option MCQ study adaptation covering topics from public OSSE/Smarter Balanced/NGSS frameworks—not official secure items, not a full TE/CR/PT simulation, and not a substitute for classroom instruction or the official assessment.

Exam sponsor: District of Columbia Office of the State Superintendent of Education (OSSE); ELA and math content from the Smarter Balanced Assessment Consortium; science content and ADAM/TestNav administration platforms via Pearson. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

58 questions

Time Limit

Official unit timing for DC CAPE 2.0 science was listed as forthcoming in OSSE System Overview materials (Feb 2026); the redesigned science form has two sections with reduced constructed-response load (OSSE FAQ Q6). Do not treat local practice session length as official timing.

Passing Score

DC CAPE 2.0 reports four performance levels for ELA, math, and science; Level 3 indicates the student met grade-level (or course-level) expectations (OSSE CAPE 2.0 page). After the first 2026–27 administration, OSSE will conduct a summer 2027 standard-setting event for high school ELA and math end-of-course assessments and redesigned science assessments before cut scores are finalized for those forms (OSSE CAPE 2.0 FAQ, Dec 2025).

Exam / Certification Fees

Free for District of Columbia public and public charter school students; DC CAPE 2.0 is the required statewide summative assessment administered through LEAs at no student exam fee (OSSE Assessments Participation & Performance Policy; OSSE CAPE 2.0 materials).

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

35%-45% of Grade 8 items (DC CAPE 2.0 Science Blueprint reporting domain)

Life Science

Cells and body systems, matter and energy in organisms and ecosystems, interdependence, heredity and variation of traits, and natural selection and adaptation across the middle-school grade band.

30%-40% of Grade 8 items (DC CAPE 2.0 Science Blueprint reporting domain)

Physical Science

Structure and properties of matter, chemical reactions and conservation of mass, forces and motion, types of interactions, energy, and waves and their applications in information transfer.

20%-30% of Grade 8 items (DC CAPE 2.0 Science Blueprint reporting domain)

Earth and Space Science

Space systems, Earth's place in the universe, plate tectonics and Earth's systems, weather and climate, and human impacts on Earth systems.

Preparing for the DC CAPE 2.0 Science Grade 8 Exam

What You Need to Know

Passing score: DC CAPE 2.0 reports four performance levels for ELA, math, and science; Level 3 indicates the student met grade-level (or course-level) expectations (OSSE CAPE 2.0 page). After the first 2026–27 administration, OSSE will conduct a summer 2027 standard-setting event for high school ELA and math end-of-course assessments and redesigned science assessments before cut scores are finalized for those forms (OSSE CAPE 2.0 FAQ, Dec 2025).
Exam length: 58 questions
Time limit: Official unit timing for DC CAPE 2.0 science was listed as forthcoming in OSSE System Overview materials (Feb 2026); the redesigned science form has two sections with reduced constructed-response load (OSSE FAQ Q6). Do not treat local practice session length as official timing.
Exam / certification fees: Free for District of Columbia public and public charter school students; DC CAPE 2.0 is the required statewide summative assessment administered through LEAs at no student exam fee (OSSE Assessments Participation & Performance Policy; OSSE CAPE 2.0 materials). Official sources

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DC CAPE 2.0 Science Grade 8: Suggested Study Strategy

1Use OSSE-linked practice/sample resources and Smarter Balanced sample items so students learn digital tools and item interactions.

2Align review to grade-level Common Core (ELA/math) or NGSS (science) expectations named in OSSE CAPE 2.0 materials—not only generic worksheets.

3Review wrong answers by claim or science domain (reading/writing/research; concepts/procedures; life/physical/Earth) to target instruction.

4Use short, frequent practice sessions across the year rather than cramming only in the spring window.

5For performance-task and constructed-response skills, practice evidence selection, planning, modeling, and revision even when using MCQ study items.

Frequently Asked Questions

What is the DC CAPE 2.0 Science Grade 8 assessment?

DC CAPE 2.0 Science Grade 8 is part of the District of Columbia Comprehensive Assessments of Progress in Education (DC CAPE) 2.0 general statewide assessment system administered by OSSE beginning in school year 2026–27 (first spring 2027 administration). It measures student progress relative to DC educational standards (NGSS).

Is DC CAPE 2.0 free for students?

Yes. DC CAPE 2.0 is the District’s required statewide summative assessment for eligible public and public charter school students and is administered through LEAs without a student exam fee.

How long is the official test?

What item types appear on the official assessment?

Official science forms use phenomena-based item clusters, selected-response, technology-enabled, and constructed-response items in a redesigned two-section design (OSSE FAQ). OpenExamPrep provides English four-option MCQ study adaptations only—not an official-format simulation.

How are results reported?

Are these practice questions official OSSE or Smarter Balanced items?

No. These free practice questions are original study aids covering topics from DC standards and publicly described CAPE 2.0 / Smarter Balanced / NGSS frameworks. They are not secure official items and do not replace OSSE/Pearson practice resources, classroom instruction, or the official spring assessment.

Does this bank replace constructed-response or performance tasks?

No. Official DC CAPE 2.0 includes performance tasks and (for science) constructed-response items. This bank adapts the underlying knowledge and judgment into multiple-choice study items only.

Free Practice Questions for DC CAPE 2.0 Science Grade 8

DC CAPE 2.0 Science — Grade 8

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