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100+ Free GA Milestones Science Grade 8 Practice Questions

Pass your Georgia Milestones Grade 8 Science (End-of-Grade) exam on the first try — instant access, no signup required.

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Which statement BEST describes the difference between electromagnetic waves and mechanical waves?

A
B
C
D
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Key Facts: GA Milestones Science Grade 8 Exam

Georgia Milestones Grade 8 Science is Georgia's free End-of-Grade test of the Science Georgia Standards of Excellence, focused on physical science across three domains - Structure of Matter, Force and Motion, and Energy and Its Transformation - with Energy weighted most heavily and Proficient Learner as the on-grade-level mark.

Sample GA Milestones Science Grade 8 Practice Questions

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

1Which statement BEST describes an atom?
A.It is the smallest particle of an element that still has the properties of that element.
B.It is a particle made by bonding two or more molecules together.
C.It always carries an overall positive electric charge.
D.It is a mixture of two or more pure substances combined physically.
Explanation: An atom is the smallest particle of an element that retains that element's chemical properties. Although atoms contain subatomic particles, those particles alone do not display the element's properties.
2A sample of pure water is made of only one kind of molecule. How should water be classified?
A.A compound
B.An element
C.A heterogeneous mixture
D.A homogeneous mixture
Explanation: Water is a compound because it is a pure substance made of two or more elements (hydrogen and oxygen) chemically bonded in a fixed ratio. A compound cannot be separated by physical means.
3Sand mixed with iron filings can be separated by passing a magnet over the mixture. This shows that the combination is
A.a heterogeneous mixture, because its parts keep their own properties
B.a compound, because the parts are chemically bonded
C.an element, because it cannot be broken down
D.a homogeneous mixture, because it looks the same throughout
Explanation: Sand and iron filings form a heterogeneous mixture because the components are not chemically combined and keep their individual properties, such as iron being magnetic. Because they are only physically mixed, a magnet can separate them.
4As thermal energy is added to a block of ice, the particles begin to move faster and the ice melts into liquid water. This change in state happens because the added energy
A.increases the motion of the particles so they can slide past one another
B.creates new water particles that did not exist before
C.removes particles from the sample until it becomes a liquid
D.changes the water molecules into a different chemical substance
Explanation: Adding thermal energy increases the kinetic energy of the particles, making them vibrate and move faster. In a solid the particles are locked in place; with enough energy they move enough to slide past one another, producing a liquid.
5In which state of matter are the particles spaced far apart, moving rapidly, and able to fill any container they are placed in?
A.Gas
B.Solid
C.Liquid
D.Plasma found only in metals
Explanation: In a gas, particles are far apart and move quickly in all directions, so a gas spreads out to fill the entire volume of its container. This contrasts with solids and liquids, whose particles are closer together.
6A student observes a substance and records that it has a fixed melting point of 0 degrees Celsius and a density of 0.92 grams per cubic centimeter. These are examples of
A.physical properties, because they can be measured without forming a new substance
B.chemical properties, because they describe how the substance reacts
C.evidence that a chemical change has taken place
D.properties that only apply to mixtures
Explanation: Melting point and density are physical properties because they can be observed or measured without changing the identity of the substance. Chemical properties, in contrast, describe how a substance forms new substances.
7Which observation is the BEST evidence that a chemical change has occurred rather than a physical change?
A.A new gas is produced and the temperature rises as two liquids are mixed
B.An ice cube melts into a puddle of water on a warm day
C.Salt dissolves and disappears into a glass of warm water
D.A copper wire is bent into the shape of a circle
Explanation: Production of a new gas along with a change in energy (temperature rising) is strong evidence of a chemical change, because new substances with new properties are forming. Physical changes alter form but not the substance's identity.
8The element carbon has 6 protons. In a neutral carbon atom, how many electrons are present?
A.6
B.0
C.12
D.3
Explanation: In a neutral atom, the number of electrons equals the number of protons so that the positive and negative charges cancel out. Since carbon has 6 protons, a neutral carbon atom has 6 electrons.
9Subatomic particles that have no electric charge and are located in the nucleus of an atom are called
A.neutrons
B.electrons
C.protons
D.ions
Explanation: Neutrons are neutral particles found in the nucleus along with protons. They have no charge, which is reflected in their name. Protons are positive and electrons are negative.
10On the periodic table, elements are arranged in order of increasing
A.atomic number (number of protons)
B.number of neutrons only
C.the date each element was discovered
D.how common the element is on Earth
Explanation: The periodic table is organized by increasing atomic number, which is the number of protons in an atom's nucleus. This arrangement causes elements with similar properties to fall into the same columns, called groups.

About the GA Milestones Science Grade 8 Exam

The Georgia Milestones Grade 8 Science End-of-Grade (EOG) assessment is part of the Georgia Milestones Assessment System (GMAS) and measures how well eighth graders have mastered the Science Georgia Standards of Excellence (GSE). At grade 8 the science standards focus on physical science, giving students a foundation for high school courses. The test is given online and uses selected-response (multiple-choice) items. Its standards are organized into three reporting domains: Structure of Matter (about 30%), Force and Motion (about 30%), and Energy and Its Transformation (about 40%). The criterion-referenced portion contributes 55 items worth 55 points, and the full form also includes norm-referenced and field-test items for roughly 75 items in total. The test is administered in two sections on the same day, with up to 70 minutes per section. Results are reported in four achievement levels - Beginning, Developing, Proficient, and Distinguished Learner - where Proficient indicates on-grade-level performance, along with a result for each domain.

Questions

100 scored questions

Time Limit

Administered in two sections on the same day with up to 70 minutes per section; total testing time is about 100 to 140 minutes, and extended time is allowed for students who need it.

Passing Score

Four achievement levels on a 180-830 scale: Beginning, Developing, Proficient, and Distinguished Learner. Proficient Learner is the on-grade-level expectation for Grade 8 Science.

Exam Fee

Free for Georgia public-school students; the Georgia Milestones EOG is funded by the state with no family registration cost. (Georgia Department of Education, Assessment and Accountability Division)

GA Milestones Science Grade 8 Exam Content Outline

30%

Structure of Matter

Elements, compounds, and mixtures; pure substances; particle motion in states of matter; physical versus chemical properties and changes; atomic structure and the periodic table; and conservation of matter in reactions (S8P1).

30%

Force and Motion

Motion graphs of speed, distance, and acceleration; balanced and unbalanced forces and Newton's laws; inertia and the force-mass-acceleration relationship; friction; and gravity, electricity, and magnetism as forces acting at a distance (S8P3, S8P5).

40%

Energy and Its Transformation

Kinetic and potential energy; energy transformations and conservation of energy; heat transfer by conduction, convection, and radiation; sound and electromagnetic waves; reflection, refraction, and absorption of light; and circuits (S8P2, S8P4, S8P5b).

How to Pass the GA Milestones Science Grade 8 Exam

What You Need to Know

  • Passing score: Four achievement levels on a 180-830 scale: Beginning, Developing, Proficient, and Distinguished Learner. Proficient Learner is the on-grade-level expectation for Grade 8 Science.
  • Exam length: 100 questions
  • Time limit: Administered in two sections on the same day with up to 70 minutes per section; total testing time is about 100 to 140 minutes, and extended time is allowed for students who need it.
  • Exam fee: Free for Georgia public-school students; the Georgia Milestones EOG is funded by the state with no family registration cost.

Keys to Passing

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

GA Milestones Science Grade 8 Study Tips from Top Performers

1Study all three domains, but give extra time to Energy and Its Transformation since it is the most heavily weighted at about 40 percent of the test.
2Master how matter is classified, including elements, compounds, and mixtures, and how particles move when matter changes between solid, liquid, and gas states.
3Practice telling physical changes from chemical changes and use conservation of matter to reason about mass before and after a reaction.
4Learn Newton's laws, the difference between balanced and unbalanced forces, and how to read distance-time graphs to describe an object's motion.
5Review the differences between kinetic and potential energy, common energy transformations, and the three methods of heat transfer: conduction, convection, and radiation.
6Compare electromagnetic waves and mechanical waves, know wave parts like crest, trough, and wavelength, and practice with reflection, refraction, and the electromagnetic spectrum.

Frequently Asked Questions

What is the Georgia Milestones Grade 8 Science test?

It is Georgia's End-of-Grade (EOG) science assessment for eighth graders, part of the Georgia Milestones Assessment System (GMAS). It is aligned to the Science Georgia Standards of Excellence and administered online by the Georgia Department of Education.

What topics are on the Georgia Milestones Grade 8 Science test?

At grade 8 the standards focus on physical science. The test covers the structure and properties of matter, energy and its transformations, forces and motion including Newton's laws, the wave nature of sound and light, and gravity, electricity, and magnetism.

How is the Georgia Milestones Grade 8 Science test scored?

Scores are reported on a scale with four achievement levels: Beginning, Developing, Proficient, and Distinguished Learner. Proficient Learner indicates on-grade-level performance, and students also receive a result for each reporting domain.

How many questions are on the Georgia Milestones Grade 8 Science test?

The criterion-referenced portion contributes 55 selected-response items worth 55 points. The full form also includes norm-referenced and field-test items, for roughly 75 items administered, all in multiple-choice format.

Is the Grade 8 Science test only physical science?

Yes. The Science Georgia Standards of Excellence for grade 8 are physical science standards, covering matter, energy, forces and motion, and waves. This builds the foundation for high school science courses.

Is there a cost to take the Georgia Milestones Grade 8 Science test?

No. The Georgia Milestones EOG is a state-funded assessment given to Georgia public-school students at no cost, so there is no registration fee for families.