8th-Grade Science Vocabulary List with Definitions

Are you in the final year of middle school (8th-grade)? Are you looking for on 8th-grade science vocabulary lists? How exciting!

8th-grade is a challenging year for everyone because it is filled with complex concepts. After all, it is the last year of middle school, and it prepares you to take on high school.
Science is one of the most rigorous subjects you will run into, so it’s always important to stay prepared!
The 8th Grade science vocabulary list is crucial for succeeding in middle school and beyond.
This list will reinforce your knowledge of scientific words  and help you become a master at spelling them.
In high school you will face difficult subjects such as Physics, Chemistry, and Biology where good spelling knowledge is a must. Better to be safe than sorry for those upcoming science tests!

Having recognized the importance of scientific subjects, Spelling Bee Ninja has prepared this vocabulary list just for you. You can practice the spellings of each word through our official Spelling Bee Training System.

List of Basic & Physical 8th-Grade Science Vocabulary

Let’s have a look at the 8th- grade science vocabulary list. You can prepare this list for succeeding in the 8th-grade, and furthermore, teachers can use this list to master their 8th– graders.

Carnivores Ecosystem Climate Fossils
Cells Environment Analyze Hypothesis
Atoms Gene Asthma Variable
Axis Organ Consumer Observation
Charts Particle DNA Experiment
Periodic table Atomic Mass Atomic Symbol Coriolis Effect
Chromosomes Orbit Disease Data
Chemical Energy Antibiotics Decomposers Proton
Earthquake Bacteria Electron Neutron
Barometer Atomic Number Biotic Abiotic
Weather Autotrophs Heterotrophs Freshwater
Marine Terrestrial Air masses Microbe
Law Food web Food chain Hazard
Mixture Electromagnetism Velocity Gravity
Density Conduction Acceleration Inertia
Compound Convection Balanced Forces Pitch
Kinetic Energy Radiation Reflection Circuits
Potential Energy Energy Transformation Diffraction Reactivity
Electron Shell Nobel gas Subatomic Conductivity

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Spelling bee ninja made this essential science vocabulary list for 8th– graders. We know these words could be difficult to memorize with understanding the meaning and the context of these words.
Worry no more! We organized the table of definitions of all these words for you.

Definitions of all Science Vocabulary Lists

Carnivores An animal that feeds on another animal is called a carnivore. They eat the meat of other animals.
Cells It’s the smallest structural and functional unit of an organism’s life. Cells are the basic building blocks of all living things.
Atoms Any particle of matter which contains at least one proton. The smallest unit of a chemical element is also called an atom.
Axis A straight central part of a structure to which others are connected. An imaginary straight line that divides the shape equally into two parts.
Charts A sheet of organized information in a table, graph, or diagram form.
Periodic table A tabular arrangement of chemical elements organized by atomic number.
Chromosomes A thread-like structure is found in the nucleus of living things. A strand of DNA encoded with genes is also known as a chromosome.
Chemical Energy The energy is stored in the bonds of chemical compounds, and this may release during the chemical reaction.
Earthquake Sudden shaking of the ground; A sudden movement of earth lithosphere(earth’s upper mantle and its crust)
Barometer The scientific instrument is used to measure atmospheric pressure. It measures the changes in the atmosphere like air pressure.
Weather The particular state of air and atmosphere on a specific place and in time
Marine These are related to the sea, like seawater or oceanic, something produced by the sea.
Geology  Study of the earth; where geologists study earth rocks and its mantle.
Mixture Combination of different things, adding one substance with another, and making a new solution
Density It is a measurement of the quantity of substance or mass per unit volume of a substance. It’s basically a measurement of how tightly matter is packed together in a particular substance.
Compound It’s a composition of 2 or more separate elements.  Any substance composed of two or more elements chemically combined with one another but in a fixed proportion.
Kinetic Energy  A form of energy that an object has due to its motion. For instance, during walking or falling, you use your kinetic energy.
Potential Energy The stored energy is possessed by the relative positions of various parts. For instance, the string has stored energy, and it will have more potential energy in a compressed or stretched state.
Electron Shell It is the outer part of an atom that surrounds the atomic nucleus. These are simple shells that electrons occupy around their nucleus of atoms.
Ecosystem The place where all the organisms and physical environment interacted with each other; A community of living organisms. It is a relationship between all the living and nonliving things.
Environment The circumstances, objects, or particular conditions by which someone is surrounded are called their environment.
Gene Made up of DNA, these are basic heredity codes. Genes carry the proteins.
Organ A Group of tissue makes organs and it constitutes a different structural and functional unit.
Particle A minute and a small portion of any substance. For instance, a particle of the atom.
Atomic Mass The average mass of the atom of an element that we measured. The single mass of an atom or molecule is known as atomic mass.
Orbit A circular path in that one body follows a circling around another body. For instance, the earth makes an orbit around the sun.
Antibiotics A medicine that inhibits the growth of bacteria
Bacteria Simply stated germs; are not visible with the human eye
Data Information based on the facts is called data
Diffraction Changing in the direction or intensity of light waves while passing through any obstacle.
Velocity The action or speed of the object; rate of motion
Acceleration Change in velocity with accordance the time
Inertia No movement, tendency to remain stable or unchanged
Gravity  Force of attraction tends to draw bodies together
Reactivity The condition of being reactive
Conductivity The ability to conduct or transmit something like heat, sound, or electricity.
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 Pro Tips to Learn the 8th-Grade Science Vocabulary

So, we made a definition list of science words for better understanding. Spelling bee ninja also arranged hard vocabulary words and many other spelling words lists., check them all to become a word master before stepping into High School. You can prepare the science vocabulary list by adding it to our training app.