EOC Science Practice Test 2025 Official Study Guide

Last Updated on June 10, 2025

Grade 8 EOC Science Practice Test 2025 Official Study Guide. Prepare for the Science End-of-Course (EOC) exam with our updated 2025 practice test. Are you or your child getting ready for the Grade 8 EOC Science Test?

The Grade 8 EOC Science Test is a standardized assessment administered in many U.S. states to evaluate students’ mastery of science standards taught throughout middle school. It typically covers concepts from physical science, life science, earth and space science, and scientific inquiry.

Table of Contents

EOC Science Practice Test 2025

EOC Science Practice Test

1) What is the original source of the energy released when fossil fuels are burned?

decayed bacteria

Earth’s core

nuclear

solar

2) What is Earth’s inner core made of?

hot gases

dense, solid metals

partly-melted rock

dense liquid materials

3) A reflector helps people in cars see a bicycle when it is dark. How do bicycle reflectors work?

They bounce light back from other sources.

They are covered with paint that glows in the dark.

They are made of a special material that gives off its own light.

They are connected to batteries that allow them to produce their own light.

4) What is the main function of an individual muscle cell?

to grow and repair tissues

to relax and contract tissues

to support and protect organs

to transmit and receive impulses

5) Which is the most basic unit of matter?

compound

element

mixture

molecule

6) Which root system BEST helps a plant to survive in a dry environment with an underground water source?

(A)

(B)

(C)

(D)

7) Why does an apple look red?

Red light waves are reflected by the apple.

Red light waves are absorbed by the apple.

Red light waves are reflected by a student’s eyes.

Red light waves are absorbed by a student’s eyes.

8) Which is NOT an example of a symbiotic relationship?

a tick biting a white-tailed deer

a caterpillar changing into a butterfly

a remora fish sticking to the shell of a sea turtle

a clownfish living within the parts of a sea anemone

9) Which determines the state of matter of a substance?

density

temperature

volume

weight

10) Use the tables below to answer the question.

Students perform an investigation using the swings on a playground. One of the students sits on swing 1. The swing is pulled as far as it could go and is released. The students count the number of swings in 60 seconds. The same student sits on swings 2 and 3, and repeats the procedure.

The students perform a second investigation, but this time with three different release points. The students want to find out if the release point affects the number of swings in 60 seconds. They conclude that the release point does not affect the number of swings in 60 seconds. What is the experimental design flaw in their second investigation?

chain length and time are both changed

all variables are controlled except chain length

release point and chain length are both changed

all variables are controlled except release point

11) Which natural process results in offspring that are genetically identical to one parent?

asexual reproduction

complete metamorphosis

sexual reproduction

incomplete metamorphosis

12) What is the measure of the pull of gravity on an object?

inertia

mass

pressure

weight

13) Which list has all terrestrial planets?

Earth, Mars, Jupiter, Saturn

Mercury, Venus, Earth, Mars

Mars, Saturn, Jupiter, Neptune

Jupiter, Saturn, Uranus, Neptune

14) A scientist tests the effectiveness of a medicine. The medicine is administered to 2,500 volunteers who discontinue all other treatments. What is wrong with this experimental design?

The experiment should include fewer volunteers.

The experiment should be administered in random dosages.

The experiment should include a group that does not take the medicine.

The experiment should allow the volunteers to continue other treatments.

15) A student flips a light switch but the light does not turn on. Based on this information, which inference is NOT valid?

The light switch is broken.

The electrical connection is broken.

The light bulb is burned out.

The electrical wire is made of copper.

16) Use the pictures below to answer the question.

What can be inferred from the bones in the pictures?

all structural features are used to walk

the organisms have similarities in skin features

all structural features have a similar function

the organisms have the same structural features

17) Which diagram shows the relative positions of Earth, the Moon and the Sun during a lunar eclipse?

18) Use the diagram below to answer the question.

What describes the event that occurred along line XY?

erosion

faulting

sedimentary deposition

volcanic eruption

19) Use the diagram below to answer the question.

Which is the title for the diagram?

Energy Pyramid

Food Chain

Water Cycle

Food Web

20) Use the pictures and table below to answer the question.

What does a warbler MOST likely eat?

fish and insects

insects and nectar

seeds and nuts

small mammals and nuts

Your score is

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EOC Science Test Content

The 8th Grade Science End-of-Course Test is a standardized assessment administered in several U.S. states to evaluate student knowledge in core science areas.

Physical Science (motion, forces, energy, matter)
Life Science (cells, genetics, ecosystems, evolution)
Earth and Space Science (weather, climate, solar system, Earth’s structure)
Scientific Inquiry and Investigation

The test is typically given near the end of the academic year and may be used as a part of the student’s final grade or to determine promotion to the next grade level.

Nature of Science	Physical Science	Life Science	Earth and Space Science
Scientific method Experiment design and variables Data analysis and conclusions	Properties of matter Forms of energy Newton’s laws of motion Simple machines	Cell structure and function Photosynthesis and respiration Heredity and Punnett squares Food webs and biomes	Rock cycle Plate tectonics Weather vs. climate The solar system and the universe

The Grade 8 Science EOC test doesn’t just test facts; it checks for deep understanding and the ability to apply scientific principles. It prepares students for high school science and strengthens critical thinking, data analysis, and problem-solving skills.

EOC Science Test Format

🧪 Florida – Grade 8 Statewide Science Assessment

Number of Questions: The test comprises multiple-choice questions.
Passing Score: A scale score of 203 is the minimum required to achieve Level 3, which is considered passing.

🧪 Texas – STAAR Grade 8 Science

Number of Questions: The test consists of 46 multiple-choice questions.
Passing Score: A raw score of 29 out of 46 (approximately 63%) is typically needed to meet the passing standard.

🧪 North Carolina – EOG Grade 8 Science

Number of Questions: The test comprises 44 operational items, with additional field test items excluded from the final score.
Passing Score: A scale score of 248 is the minimum required to achieve Level 3, which is considered proficient.

EOC Science Official Study Guide

State Education Websites: Most states provide practice tests, study guides, and standards (e.g., Texas STAAR, Florida FSA). These resources offer a range of study materials tailored to different curricula and preparation needs. For instance:

https://fl50010989.schoolwires.net/Page/193