English Vocabulary · Grade 8 Live Review Preview

8th Grade Vocabulary Words

Eighth-grade readers move toward high-school-level analysis across literature, argument, research, physical and life science, algebra, economics, history, and civics. This level strengthens precise Tier II and cross-curricular vocabulary while emphasizing context, analogy, word relationships, Greek and Latin roots, multiple meanings, source judgment, and evidence-based communication.

This independently authored 500-word beta curriculum is arranged in twenty pages of twenty-five words each. Words 1–300 include five cloze questions per page; words 301–500 remain fully visible and editable as list pages while the expanded practice layer is developed. Each row includes a subject-field label and an editable word-study note about a transparent affix, compound structure, capitalization, or dictionary base form. The cited Grade 8 resources calibrate difficulty and vocabulary-study skills only; all learner-facing definitions, examples, quizzes, and descriptions are original KSSR copy.

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Words 276–300 of 500
#	Word	Details	Meaning	Sample sentence
276	pitch	noun Study Field: Grade 8 science and technology word Word study: Base-form focus: pitch is the dictionary headword; compare its inflected or derived forms in context.	how high or low a sound seems, mainly determined by frequency	A faster vibration produces a higher pitch.
277	decibel	noun Study Field: Grade 8 science and technology word Word study: Base-form focus: decibel is the dictionary headword; compare its inflected or derived forms in context.	a unit used to measure sound level	A whisper has a much lower decibel level than a siren.
278	echo	noun Study Field: Grade 8 science and technology word Word study: Base-form focus: echo is the dictionary headword; compare its inflected or derived forms in context.	a reflected sound heard again after the original sound	The shout returned as an echo from the canyon wall.
279	gear-ratio	noun Study Field: Grade 8 science and technology word Word study: Term structure: gear + ratio. Study the complete expression as one field-specific unit.	the relationship between the numbers of teeth on two connected gears	Changing the gear-ratio increased the bicycle wheel's turning force.
280	power	noun Study Field: Grade 8 science and technology word Word study: Base-form focus: power is the dictionary headword; compare its inflected or derived forms in context.	the rate at which energy is transferred or work is done	The motor's power tells how quickly it can perform work.
281	horsepower	noun Study Field: Grade 8 science and technology word Word study: Base-form focus: horsepower is the dictionary headword; compare its inflected or derived forms in context.	a unit used to measure the power of engines and motors	The larger engine produces greater horsepower.
282	periodic-table	noun Study Field: Grade 8 science and technology word Word study: Term structure: periodic + table. Study the complete expression as one field-specific unit.	a chart that organizes chemical elements by atomic number and recurring properties	The periodic-table places elements with similar behaviors in the same column.
283	atomic-number	noun Study Field: Grade 8 science and technology word Word study: Term structure: atomic + number. Study the complete expression as one field-specific unit.	the number of protons in the nucleus of an atom	Oxygen has an atomic-number of eight.
284	atomic-mass	noun Study Field: Grade 8 science and technology word Word study: Term structure: atomic + mass. Study the complete expression as one field-specific unit.	the weighted average mass of an element's naturally occurring isotopes	The periodic table lists chlorine's atomic-mass as about 35.45.
285	chemical-symbol	noun Study Field: Grade 8 science and technology word Word study: Term structure: chemical + symbol. Study the complete expression as one field-specific unit.	a one- or two-letter abbreviation representing a chemical element	Fe is the chemical-symbol for iron.
286	electron-shell	noun Study Field: Grade 8 science and technology word Word study: Term structure: electron + shell. Study the complete expression as one field-specific unit.	a region around an atomic nucleus associated with a particular energy level	The first electron-shell can hold two electrons.
287	aqueous	adjective Study Field: Grade 8 science and technology word Word study: Suffix focus: -ous commonly forms an adjective meaning full of or characterized by.	dissolved in water or containing water as the solvent	The label aq indicates that the substance is in an aqueous solution.
288	colloid	noun Study Field: Grade 8 science and technology word Word study: Base-form focus: colloid is the dictionary headword; compare its inflected or derived forms in context.	a mixture containing tiny dispersed particles that do not readily settle	Fog is a colloid of liquid droplets dispersed in air.
289	saturated	adjective Study Field: Grade 8 science and technology word Word study: Base-form focus: saturated is the dictionary headword; compare its inflected or derived forms in context.	containing the maximum amount of dissolved substance possible at given conditions	No more sugar dissolved once the solution became saturated.
290	unsaturated	adjective Study Field: Grade 8 science and technology word Word study: Base-form focus: unsaturated is the dictionary headword; compare its inflected or derived forms in context.	able to dissolve more of a substance under the current conditions	The unsaturated solution accepted another spoonful of salt.
291	supersaturated	adjective Study Field: Grade 8 science and technology word Word study: Base-form focus: supersaturated is the dictionary headword; compare its inflected or derived forms in context.	containing more dissolved material than is normally stable at given conditions	A seed crystal caused the supersaturated solution to crystallize rapidly.
292	dominant	adjective Study Field: Grade 8 science and technology word Word study: Base-form focus: dominant is the dictionary headword; compare its inflected or derived forms in context.	describing an allele expressed when at least one copy is present	A dominant allele can mask the effect of a recessive allele.
293	recessive	adjective Study Field: Grade 8 science and technology word Word study: Suffix focus: -ive commonly forms an adjective meaning having a quality or tendency.	describing an allele expressed only when no dominant allele is present	A recessive trait may appear when an organism inherits two recessive alleles.
294	homozygous	adjective Study Field: Grade 8 science and technology word Word study: Suffix focus: -ous commonly forms an adjective meaning full of or characterized by.	having two identical alleles for a particular gene	A homozygous plant carries two matching alleles for seed color.
295	heterozygous	adjective Study Field: Grade 8 science and technology word Word study: Suffix focus: -ous commonly forms an adjective meaning full of or characterized by.	having two different alleles for a particular gene	A heterozygous organism can pass either allele to its offspring.
296	sex-linked	adjective Study Field: Grade 8 science and technology word Word study: Term structure: sex + linked. Study the complete expression as one field-specific unit.	describing a gene located on a sex chromosome	Red-green color blindness is often taught as a sex-linked trait.
297	pedigree	noun Study Field: Grade 8 science and technology word Word study: Base-form focus: pedigree is the dictionary headword; compare its inflected or derived forms in context.	a diagram tracing how a trait appears across generations of a family	The pedigree suggests that the trait is recessive.
298	genetic-code	noun Study Field: Grade 8 science and technology word Word study: Term structure: genetic + code. Study the complete expression as one field-specific unit.	the system by which nucleotide sequences specify amino acids in proteins	Nearly all organisms use the same basic genetic-code.
299	DNA	noun Study Field: Grade 8 science and technology word Word study: Capitalization focus: DNA is an abbreviation or initialism; preserve its capital letters.	the molecule that stores hereditary instructions in living organisms	A DNA sequence contains information that cells can copy.
300	RNA	noun Study Field: Grade 8 science and technology word Word study: Capitalization focus: RNA is an abbreviation or initialism; preserve its capital letters.	a molecule that helps copy, carry, or use genetic instructions	Messenger RNA carries a gene's instructions to a ribosome.

Vocabulary reading and practice

Page 12 vocabulary review

Review five selected words from page 12.

Vocabulary quiz

Complete 5 review questions for this page.

1. The shout returned as an ___ from the canyon wall.

Answer: echo

2. A seed crystal caused the ___ solution to crystallize rapidly.

Answer: supersaturated

3. Changing the ___ increased the bicycle wheel's turning force.

Answer: gear-ratio

4. A ___ allele can mask the effect of a recessive allele.

Answer: dominant

5. The motor's ___ tells how quickly it can perform work.

Answer: power

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8th Grade Vocabulary Words

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