English Vocabulary · Grade 7 Live Review Preview

7th Grade Vocabulary Words

Seventh-grade readers are expected to move confidently among literary analysis, argument, research, science, mathematics, history, and civic discussion. This level develops precise Tier II and cross-curricular language while reinforcing context clues, word relationships, roots and affixes, multiple meanings, source evaluation, and evidence-based speaking and writing.

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 supplied Grade 7 workbook calibrated difficulty and vocabulary-study skills only; all learner-facing definitions, examples, quizzes, and descriptions are original KSSR copy.

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Words 226–250 of 500
#	Word	Details	Meaning	Sample sentence
226	input	noun Study Field: Grade 7 science and engineering word Word study: Base-form focus: input is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The microphone converts sound input into an electrical signal.
227	output	noun Study Field: Grade 7 science and engineering word Word study: Base-form focus: output is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The screen displays the sensor's output as a graph.
228	sensor	noun Study Field: Grade 7 science and engineering word Word study: Base-form focus: sensor is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	A light sensor turns the lamp on at dusk.
229	robotics	noun Study Field: Grade 7 science and engineering word Word study: Base-form focus: robotics is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Robotics combines programming, mechanics, and electronics.
230	automation	noun Study Field: Grade 7 science and engineering word Word study: Suffix focus: -ation commonly forms a noun naming an action, process, or result.	Reviewed Cantonese equivalent not yet available.	Automation allows the greenhouse to adjust watering overnight.
231	hydroelectric	adjective Study Field: Grade 7 science and engineering word Word study: Base-form focus: hydroelectric is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The hydroelectric station uses falling water to turn turbines.
232	solar	adjective Study Field: Grade 7 science and engineering word Word study: Base-form focus: solar is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	A solar cooker concentrates sunlight to heat food.
233	geothermal	adjective Study Field: Grade 7 science and engineering word Word study: Base-form focus: geothermal is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The town uses geothermal energy from underground hot water.
234	turbine	noun Study Field: Grade 7 science and engineering word Word study: Base-form focus: turbine is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Steam spins the turbine inside the power plant.
235	generator	noun Study Field: Grade 7 science and engineering word Word study: Base-form focus: generator is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The bicycle generator powers the headlamp.
236	antidote	noun Study Field: Grade 7 science and engineering word Word study: Base-form focus: antidote is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Doctors administered the antidote soon after identifying the toxin.
237	malfunction	noun Study Field: Grade 7 science and engineering word Word study: Suffix focus: -tion commonly forms a noun naming an action, process, or result.	Reviewed Cantonese equivalent not yet available.	A sensor malfunction caused the false alarm.
238	auditory	adjective Study Field: Grade 7 science and engineering word Word study: Base-form focus: auditory is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The auditory nerve carries signals from the inner ear.
239	inaudible	adjective Study Field: Grade 7 science and engineering word Word study: Suffix focus: -ible means capable of, suitable for, or able to be affected.	Reviewed Cantonese equivalent not yet available.	The bat's highest calls are inaudible to human ears.
240	propel	verb Study Field: Grade 7 science and engineering word Word study: Base-form focus: propel is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Expelled air can propel the balloon across the room.
241	saturate	verb Study Field: Grade 7 science and engineering word Word study: Base-form focus: saturate is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Continued rain will saturate the soil.
242	lethal	adjective Study Field: Grade 7 science and engineering word Word study: Base-form focus: lethal is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Even a small dose of the chemical can be lethal to fish.
243	rational	adjective Study Field: Grade 7 mathematics and data word Word study: Base-form focus: rational is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The decimal 0.75 is rational because it equals three fourths.
244	positive	adjective Study Field: Grade 7 mathematics and data word Word study: Suffix focus: -ive commonly forms an adjective meaning having a quality or tendency.	Reviewed Cantonese equivalent not yet available.	A positive number appears to the right of zero on a number line.
245	term	noun Study Field: Grade 7 mathematics and data word Word study: Base-form focus: term is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The expression has three terms, and each term is separated by a plus sign.
246	substitute	verb Study Field: Grade 7 mathematics and data word Word study: Base-form focus: substitute is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Substitute six for x before simplifying the expression.
247	difference	noun Study Field: Grade 7 mathematics and data word Word study: Suffix focus: -ence commonly forms a noun naming an action, quality, or state.	Reviewed Cantonese equivalent not yet available.	The difference between twenty and thirteen is seven.
248	percent	noun Study Field: Grade 7 mathematics and data word Word study: Base-form focus: percent is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Twenty-five percent is equivalent to one fourth.
249	theoretical	adjective Study Field: Grade 7 mathematics and data word Word study: Base-form focus: theoretical is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	The theoretical probability of rolling a six is one sixth.
250	experimental	adjective Study Field: Grade 7 mathematics and data word Word study: Base-form focus: experimental is the dictionary headword; compare its inflected or derived forms in context.	Reviewed Cantonese equivalent not yet available.	Our experimental probability changed as we repeated the toss.

Vocabulary reading and practice

A Rescue Robot

Reading practice for pages 10–12. Five relevant words are highlighted.

English reading

The robotics team designs a machine for flooded buildings. A water sensor warns when soaked floors begin to saturate its wheels. Small fans propel the robot around obstacles so rescuers can inspect a room without entering a potentially lethal space.

Cantonese translation

A reviewed translation is not available for this passage yet.

Reading comprehension

1. What does the sensor detect?

The sensor detects water.

2. What can saturate the wheels?

Floodwater can saturate the wheels.

3. Why might the robot enter first?

It can inspect a potentially lethal space safely.

Vocabulary quiz

Choose the dictionary equivalent for each of 5 selected words.

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Sources and curriculum references

These references guide selection and calibration. Definitions, sample sentences, readings, questions, and teaching notes are independently written and reviewed.

7th Grade Vocabulary Words

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