easy
Food gives our bodies energy for movement and growth.
What does Energy mean?
the ability to cause change or do work, or a feeling of liveliness.
Dictionary definition
In science, the ability to cause change or do work; in everyday language, energy can also mean physical or mental liveliness.
Example sentences
Energy in a sentence
medium
Solar panels transform energy from sunlight into electrical energy.
hard
Energy can transfer between objects and change form, but the total amount is conserved in a closed system.
Writing practice
Ready to write your own? Study the examples, then practice energy in a sentence with Sentence Builder checklist feedback.
Quick practice
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Practice the meaning of Energy
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What does energy mean in science?
Energy is transferred or transformed when physical systems change.
Practice 2
Which sentence uses energy in a science sense?
Kinetic energy is energy associated with motion.
Practice 3
Which statement is accurate?
Energy can move between systems and change form.
Practice complete
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Pronunciation coach
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Energy
Voice settings
Sounds like
en · er · jee · strongest beat: en
Tap each sound part, then blend the whole word together.
Learn
WordEnergy.
Partnoun.
MeaningEnergy means the ability to cause change or do work, or a feeling of liveliness.
ExampleExample: Food gives our bodies energy for movement and growth.
Word breakdown
3 syllables. Say each part, then blend the word.
- Syllables
- en · er · jee
- Strongest beat
- en
- Ending
- jee
- Tip
- Put a little extra energy on en.
Your turn
Say Energy
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Nice work—you practiced energy.
Synonyms
Words like Energy
powerA close everyday term for energy or capacity, although in science power specifically measures how quickly energy is transferred.
vitalityA close synonym when energy means physical or mental liveliness.
vigorA close synonym for active strength and enthusiasm, not for every scientific energy sense.
Antonym review
Does Energy have an opposite?
Energy has scientific and liveliness senses but no single direct antonym. Fatigue and tiredness contrast with personal liveliness, not with physical energy as a conserved quantity.
Synonym practice
Want to practice energy synonyms in context? Try a Synonym Search question like "The snack gave the runner energy," then compare close word choices. Practice energy synonyms.
Word family
Energy word family
Base word
energy
noun
energies
Different kinds or amounts of energy, or combined efforts.
adjective
energetic
Full of energy or involving active effort.
adverb
energetically
In a lively or forceful way.
Related words
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Student support
Understand Energy
Hint for students
Look for what can cause movement, heating, light, sound, or another change.
Common mix-up
Energy and force are related but not identical. Force is a push or pull; energy is the ability of a system to cause change or do work.
Try it in class or at home
Students make an energy-chain diagram for a flashlight, moving toy, or plant, label energy transfers and transformations, and identify evidence of change.
Teacher prompt
Trace the energy changes in a solar-powered toy. Where does the energy begin, what form does it take, and what changes does it cause?
Word Wheels
Practice Energy with a Word Wheel
Explore 2 wheels that include this word.
1 of 2
Science Word Wheels
Strengthen science vocabulary with a Word Wheel
Spin either grade-banded wheel to revisit this word alongside related science ideas. Choose the level that best fits the learner or lesson.
Word Wheel · Grades 4–6
Practice with the Grades 4–6 Space Words Wheel
Spin this Space Words wheel to connect astronomy systems, forces, events, observation tools, and precise scientific meanings.
Learning activities
Practice Energy and explore more word games
Cards labelled “Practice ENERGY” keep this word in focus. Explore cards open games with other words.
Practice ENERGY
Sentence Builder
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Spell Hive
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Vocabulary Match
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Match meanings
Explore · Context
Context Clue Challenge
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Explore · Scramble
Scrambled Bees
Rebuild words from mixed-up letters for spelling practice.
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