101 Science Words That Start With J + Quiz

Hey there science enthusiasts and word wanderers! Ready to embark on a lexical journey where J stands for not just “Jump” but a whole galaxy of intriguing scientific terms? Buckle up as we delve into the marvelous world of Science Words That Start With J.

Forget about jigsaw puzzles; we’re putting together a linguistic puzzle with Jellyfish, Jet propulsion, and maybe even a touch of Jurassic magic. From the juvenile wonders to the jet-setting realms of physics, we’ve got J-words that will make your brain do a happy little jitter.

So, let’s jet off into the juicy, jargon-filled universe of Science Words That Start With J – because learning should always be a jamboree!

Science Words That Start With J

Science Words That Start With J (4th Grade):

Word	Meaning
Jellyfish	A marine animal with tentacles
Jupiter	The largest planet in our solar system
Jet	High-speed aircraft propulsion
Joule	Unit of energy measurement
Jackal	A wild dog species
Jigsaw puzzle	Puzzle with interlocking pieces
Jet stream	Fast, flowing air in the atmosphere
Jaw	Part of the skull for chewing
Joint	Connection between bones
Javelin	Throwing spear used in sports
Journal	Periodical for recording events
Jolt	Sudden, strong shock or jerk
Jumper	Clothing item for jumping
Jet engine	Propulsion device for aircraft
Jaguar	Large feline mammal
Jigsaw	Puzzle with irregular pieces
Jockey	Horse racing rider
Juvenile	Young or immature
Jam	Thick fruit spread
Jumble	Mix or disorder

Science Words That Start With J (5th Grade):

Word	Meaning
Jupiter	The largest planet in our solar system
Jet propulsion	Movement by jet or rocket thrust
Joule’s law	Energy conversion law
Joule heating	Heating effect due to electric current
Jet lag	Fatigue from time zone changes
Jurassic period	Geological time period
Jovian planets	Gas giant planets like Jupiter
Jet stream	Fast, flowing air in the atmosphere
Jigsaw puzzle	Puzzle with interlocking pieces
Javelin throw	Athletic event involving javelin
Journal article	Published scientific article
Juxtaposition	Placing things close together for contrast
Jellyfish sting	Painful reaction from jellyfish
Jawbone	Bone in the jaw structure
Joule-Thomson effect	Change in temperature during gas expansion
Jatropha	Plant used for biofuel
Jacuzzi effect	Mixing of fluids in a jacuzzi
Jounce	Sudden jolt or bounce
Joint inflammation	Swelling and pain in joints
Jumbo jet	Large commercial aircraft

Science Words That Start With J (6th Grade):

Word	Meaning
Jupiter’s moon	Natural satellite of the planet Jupiter
Joule-Thomson coefficient	Ratio describing gas behavior during expansion
Joule’s experiment	Experiment related to energy and work
Jet engine design	Planning and creation of jet propulsion systems
Jovian atmosphere	Atmosphere of gas giant planets like Jupiter
Junctional complex	Cellular structure in cell biology
Juxtaposed genes	Genes located close to each other on a chromosome
Joint range of motion	Extent of movement in a joint
Joule per mole	Energy per amount of substance
Jute fiber	Natural plant fiber used for textiles
Jovian magnetosphere	Magnetic field around gas giant planets
J-shaped growth curve	Growth pattern resembling the letter J
Jet fuel	Fuel used for jet engines
Joule expansion	Increase in volume due to energy input
Jurisdiction	Legal authority or power
Jumping gene	Gene capable of changing position within a genome
Jacobian matrix	Matrix of partial derivatives in mathematics
Jurassic fossil	Fossil from the Jurassic period
Joule heating effect	Generation of heat due to electric current
Juvenile hormone	Hormone controlling insect development

Science Words That Start With J (7th Grade):

Word	Meaning
Jumping spider	Spider known for its jumping ability
Joule-Thomson inversion	Phenomenon in thermodynamics
Joule-Kelvin effect	Cooling effect in gas expansion
Juxtacrine signaling	Cell communication via direct contact
Jurkat cells	Immortalized human T lymphocyte cell line
Jet stream patterns	Atmospheric wind patterns at high altitudes
Juxtaglomerular apparatus	Part of the kidney involved in blood pressure regulation
Jacobian determinant	Mathematical concept in vector calculus
Joint disorder	Condition affecting joints
Juxtapositional gene regulation	Regulation of genes close to each other
Jensen’s inequality	Mathematical inequality in probability theory
Joubert syndrome	Genetic disorder affecting the brain
Junction potential	Electrical potential at a cell junction
Jitter analysis	Examination of irregularities in signal timing
Jet velocity	Speed of a jet or fluid
Java Programming	Computer programming language
Joint moment	Force that causes rotation at a joint
Juxtamedullary nephron	Type of nephron in the kidney
Jackfruit	Tropical fruit with large, spiky exterior
Job’s method	Technique in crystallography

Science Words That Start With J (8th Grade):

Word	Meaning
Joule-Thomson cooling	Cooling effect in gas expansion
Jovian moon	Moon orbiting a gas giant planet like Jupiter
Jacobian transformation	Mathematical transformation in vector calculus
Juxtaposition analysis	Examination of juxtaposed elements
Jackdaw	Eurasian bird species
Jet lag syndrome	Condition due to rapid travel across time zones
Jaccard index	Statistical measure of similarity
Jensen-Shannon divergence	Measure of dissimilarity between probability distributions
Joint torque	Rotational force at a joint
Jovian aurora	Atmospheric light display on gas giant planets
Jatropha biodiesel	Biodiesel fuel derived from Jatropha plant
Judd-Ofelt theory	Theory describing rare-earth ions in crystals
Jet impingement	Cooling technique in engineering
Jacobian iteration	Iterative method in mathematics
Juxtaglomerular cell	Cell in the kidney involved in blood pressure regulation
Jamin interferometer	Optical instrument for measuring refractive index
Jordan canonical form	Standard form of a matrix in linear algebra
Joint angle sensor	Device measuring angles at joints
Jovian magnetodisk	Magnetic structure around gas giant planets
Jet mixing	Process of mixing fluids in a jet

Physics Words That Start With J:

Word	Meaning
Joule	Unit of energy measurement
Joule’s law	Relationship between energy and heat
Joule-Thomson effect	Temperature change during gas expansion
Jounce	Rate of change of jerk in physics
Joule per kelvin	Unit of specific heat capacity
Jacobian matrix	Matrix of partial derivatives in mathematics
Jet stream	High-altitude air current
Josephson effect	Quantum phenomenon in superconductivity
Jump discontinuity	Discontinuity in the derivative of a function
J-coupling	Interaction between nuclear spins in NMR
Jerk	Rate of change of acceleration
Jansky	Unit of spectral flux density
Joule heating	Generation of heat due to electric current
Josephson junction	Superconducting electronic device
Joule-Thomson coefficient	Ratio of temperature change to pressure change
Jitter	Variability in signal timing
Jacobi identity	Mathematical equation in vector calculus
Joint probability	Probability of two events occurring together
Jovian planets	Gas giant planets like Jupiter
Joule-second	Unit of action in quantum mechanics

Chemistry Words That Start With J:

Word	Meaning
Jamming	Interference in communication systems
Jahn-Teller effect	Distortion of molecular geometry in transition metals
Jacobian determinant	Determinant of the Jacobian matrix in mathematics
Juxtaposition	Placement of elements close together for contrast
J-aggregate	Molecular aggregation in chemistry
Jominy end-quench test	Test for evaluating hardenability of steels
Jump diffusion	Random motion with occasional jumps
Joule-Thomson inversion curve	Curve describing temperature changes during gas expansion
Juxtaposition polymerization	Polymerization reaction with close proximity of reactants
Jarosite	Mineral containing sulfate and hydroxide ions
Jar test	Water treatment process evaluation
Jordan form	Canonical form of a matrix in linear algebra
Jod-Basedow phenomenon	Hyperthyroidism triggered by iodine intake
Josephson voltage standard	Voltage standard based on quantum effects
Jatropha oil	Oil extracted from the Jatropha plant
Jet dyeing	Dyeing process for textiles using a jet
Joining	Process of combining materials
Juice concentrate	Concentrated form of fruit juice
Junction potential	Electrochemical potential at a junction
Juice extractor	Device for extracting juice from fruits

Biology Words That Start With J:

Word	Meaning
Juxtacrine	Cell communication via direct contact
J-shaped curve	Growth or population pattern resembling the letter J
Jurkat cells	Immortalized human T lymphocyte cell line
Jugular vein	Vein carrying blood from the head to the heart
Juncture	Point of connection or junction
Juxtaglomerular apparatus	Part of the kidney regulating blood pressure
Juxtamedullary nephron	Type of nephron in the kidney
Juvenile	Immature or young organism
Juniper berries	Small, berry-like cones of juniper plants
Jatropha	Genus of plants used for biofuel
Jablonski diagram	Diagram illustrating electronic transitions in molecules
Jod-Basedow effect	Hyperthyroidism triggered by iodine intake
Jacobsen syndrome	Genetic disorder affecting multiple systems
Jackfruit	Large tropical fruit with edible seeds
Jacobson’s organ	Sensory organ in some reptiles and amphibians
Jacalin	Lectin protein derived from jackfruit seeds
Jaharis reaction	Organic reaction involving rearrangement of a double bond
Jackdaw	Eurasian bird species
Jade plant	Succulent plant with jade-green leaves
Jambolan	Tropical tree producing edible fruit

Math Words That Start With J:

Word	Meaning
Joint variation	Relationship between multiple variables
Jordan curve	Continuous curve in topology
Jacobi iterative method	Iterative method in numerical analysis
Jump discontinuity	Discontinuity in the derivative of a function
Jacobian matrix	Matrix of partial derivatives in mathematics
Join	Operation combining sets or data
Jordan form	Canonical form of a matrix in linear algebra
Jaccard index	Measure of similarity between sets
Joint probability distribution	Distribution involving multiple variables
Juxtaposition	Placement of elements close together for contrast
Jump function	Function with sudden changes in value
Jordan’s lemma	Mathematical lemma in complex analysis
Justification	Reasoning or evidence supporting a claim
Jump process	Stochastic process with abrupt changes
Jitter	Variability in signal timing
Janko group	Finite group in mathematical group theory
Jacobian determinant	Determinant of the Jacobian matrix
Jensen’s inequality	Inequality in probability theory
Joint distribution function	Probability distribution for multiple variables
Julian year	Unit of time in astronomy

Physical Science Words That Start With J:

Word	Meaning
Joule	Unit of energy measurement
Joule’s law	Relationship between energy and heat
Jet stream	High-altitude air current
Joule-Thomson effect	Temperature change during gas expansion
Scientific Words With J:
Juxtaposition	Placing things close together for contrast
Jovian	Relating to gas giant planets like Jupiter
Jettison	Discarding or ejecting something, often in space exploration
Joule	Unit of energy measurement
Juvenile Phase	Early stage of development
Jost’s Law	Law describing electrical conduction in solids
Jet Propulsion	Propelling objects using jet engines
Jurassic	Geological period characterized by dinosaurs
Jejunum	Part of the small intestine
Junction	Connection or joining point
J-curve	Curve showing exponential growth
Jansky	Unit of spectral flux density
Jacobsen Syndrome	Genetic disorder affecting multiple systems
Jahn-Teller Effect	Distortion of molecular geometry in transition metals
Japanese Beetle	Invasive species of beetle
Jacobson’s Organ	Sensory organ in some reptiles and amphibians
Jambalaya Mutation	Genetic mutation in fruit flies
Jumper (in electronics and physics)	Electrical component connecting two points
Jugular Vein	Vein carrying blood from the head to the heart

Here are 10 quizzes based on the words in the article:

Quiz 1: 4th Grade Science Words That Start With J

What is the largest planet in our solar system?
- A) Jellyfish
- B) Jupiter
- C) Jet
What is a fast, flowing air current in the atmosphere?
- A) Joint
- B) Jolt
- C) Jet stream
Which animal is known for its tentacles?
- A) Jaguar
- B) Javelin
- C) Jellyfish

Quiz 2: 5th Grade Science Words That Start With J

What law describes the conversion of energy?
- A) Joule’s law
- B) Jet propulsion
- C) Juxtaposition
In which geological period did dinosaurs exist?
- A) Juxtaposition
- B) Jurassic period
- C) Jockey
What is a measure of dissimilarity between probability distributions?
- A) Jolt
- B) Jensen-Shannon divergence
- C) Jigsaw puzzle

Quiz 3: 6th Grade Science Words That Start With J

Which moon orbits the planet Jupiter?
- A) Jet engine design
- B) Jupiter’s moon
- C) Junctional complex
What is the energy unit per mole?
- A) Juxtaposed genes
- B) Joule per mole
- C) Jet fuel
In which atmospheric layer do Jovian atmospheres exist?
- A) Jute fiber
- B) Jovian atmosphere
- C) J-shaped growth curve

Quiz 4: 7th Grade Science Words That Start With J

What is the name of the phenomenon in thermodynamics related to gas expansion?
- A) Jumping spider
- B) Joule-Thomson inversion
- C) Java Programming
Which bird species is mentioned in the context of 7th-grade science words?
- A) Jounce
- B) Jackdaw
- C) Juvenile hormone
What is the unit of spectral flux density?
- A) Juvenile
- B) Jitter
- C) Jansky

Quiz 5: 8th Grade Science Words That Start With J

What cooling effect is associated with gas expansion?
- A) Joule expansion
- B) Joule-Thomson cooling
- C) Jump discontinuity
What is the measure of dissimilarity between probability distributions?
- A) Jaccard index
- B) Joint torque
- C) Jacobi identity
What is the term for the canonical form of a matrix in linear algebra?
- A) Jaccard index
- B) Jordan canonical form
- C) Joint distribution function

Quiz 6: Physics Words That Start With J

What is the unit of energy measurement?
- A) Jansky
- B) Joule
- C) Jitter
Which effect describes the change in temperature during gas expansion?
- A) Jump discontinuity
- B) Joule’s law
- C) Joule-Thomson effect
What is the rate of change of jerk in physics called?
- A) Jump function
- B) Jounce
- C) Jerk

Quiz 7: Chemistry Words That Start With J

What is the distortion of molecular geometry in transition metals called?
- A) Juxtaposition
- B) Jod-Basedow effect
- C) Jahn-Teller effect
Which test evaluates the hardenability of steels?
- A) Juxtaposition polymerization
- B) Jominy end-quench test
- C) Jump diffusion

Quiz 8: Biology Words That Start With J

What cell communication involves direct contact?
- A) Juncture
- B) Juxtacrine
- C) Juxtapositional gene regulation
Which type of vein carries blood from the head to the heart?
- A) Jugular vein
- B) Jurkat cells
- C) Jumped Bail

Quiz 9: Math Words That Start With J

What is the term for a mathematical transformation in vector calculus?
- A) Joint probability
- B) Jacobian transformation
- C) Jordan curve
What mathematical lemma is associated with complex analysis?
- A) Jitter
- B) Jordan’s lemma
- C) Joint distribution function

Quiz 10: Forensic Words with J

What is the tool mentioned in forensic analysis that may be used in crimes?
- A) Judicial Evidence
- B) Jagged Wound
- C) Jackknife
What does “Juvenile Prints” refer to in forensic terms?
- A) Prints left by young individuals
- B) Prints found in juvenile courts
- C) Prints related to criminal juveniles

Feel free to mix and match these questions for various levels of difficulty and focus!

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Created by

Dr. Julia Rossi

English Language Level Placement Test – (TEFL)

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Pass and receive an “English Language Level Placement” certificate.

1 / 20

What is a simile?

A) A comparison using "like" or "as".

B) A direct comparison without using "like" or "as".

C) An exaggerated statement.

D) A figure of speech that gives human qualities to non-human things.

2 / 20

Identify the simile in the following sentence: “She swims like a fish.”

A) She swims

B) like a fish

C) swims like

D) a fish

3 / 20

What is a metaphor?

A) A comparison that uses "like" or "as".

B) A direct comparison that does not use "like" or "as".

C) An expression that means something other than the literal meanings of its words.

D) A word that sounds like its meaning.

4 / 20

Which of the following is a metaphor?

A) He is as brave as a lion.

B) Her tears were a river flowing down her cheeks.

C) She runs like the wind.

D) He barked orders at his team.

5 / 20

What is an idiom?

A) A literal expression.

B) A comparison using "like" or "as".

C) A group of words established by usage as having a meaning not deducible from those of the individual words.

D) A direct comparison without using "like" or "as".

6 / 20

What does the idiom “break the ice” mean?

A) To literally break ice.

B) To start a conversation in a social setting.

C) To cool down a situation.

D) To freeze something quickly.

7 / 20

What is an adjective?

A) A word that describes or modifies a noun.

B) A word that shows action.

C) A word that replaces a noun.

D) A word that connects words together.

8 / 20

Choose the adjective in the following sentence: “The quick brown fox jumps over the lazy dog.”

A) quick, brown

B) jumps

C) over

D) dog

9 / 20

What is an abbreviation?

A) A shortened form of a word or phrase.

B) A long form of a word.

C) A word used to describe another word.

D) A word used in place of a noun.

10 / 20

What does the abbreviation “e.g.” stand for?

A) End game

B) Exempli gratia (for example)

C) Ergo (therefore)

Estimated guess

11 / 20

What is a verb?

A) A word that describes a noun.

B) A word that indicates action, occurrence, or existence.

C) A word that connects two parts of a sentence.

D) A word that modifies a verb.

12 / 20

Identify the verb in the following sentence: “The cat sleeps on the sofa.”

A) The

B) cat

C) sleeps

D) sofa

13 / 20

“Out of the frying pan into the fire” is an example of:

A) A simile.

B) A metaphor.

C) An idiom.

D) An adjective.

14 / 20

Which of the following is an adjective?

A) Quickly

B) Beautiful

C) Run

D) Under

15 / 20

The abbreviation “NASA” stands for:

A) National Aeronautics and Space Administration

B) North American Space Agency

C) National Association of Space Astronauts

D) None of the above

16 / 20

Choose the metaphor in the following sentence: “Time is a thief.”

A) Time

B) is

C) a thief

D) None of the above

17 / 20

What does the idiom “hit the books” mean?

A) To physically hit books.

B) To start studying.

C) To write a book.

D) To organize books on a shelf.

18 / 20

Which of the following sentences contains a simile?

A) He is a shining star.

B) She danced like there was no tomorrow.

C) Life is a rollercoaster.

D) They moved mountains to be together.

19 / 20

“LOL” is an abbreviation for:

A) Lots Of Love

B) Little Old Lady

C) Long Overdue Library-book

D) Laugh Out Loud

20 / 20

Identify the verb in this sentence: “They whispered secrets into the night.”

A) They

B) secrets

C) whispered

D) night

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Conclusion

And there you have it, fellow explorers of the scientific lexicon! We’ve surfed through the Jet streams of physics, marveled at the Jovian mysteries in space, and even unraveled the intricate Jigsaw of biological wonders.

From the juvenile beginnings of learning to the advanced realms of Jovian magnetospheres, this journey through Science Words That Start With J has been nothing short of a jazzy adventure.

Summary