103 Science Words That Start With Y + Quiz

Today’s magic letter is ‘Y’! Yup, we’re diving into the fantastic world of Science Words That Start With Y – and trust me, it’s like a linguistic rollercoaster with yellowcake twists, yawn-inducing turns, and maybe even a little yolked mystery along the way.

So, grab your virtual lab coats, hop on the word wagon, and let’s unravel the Y-marinated wonders of science vocabulary.

From yachts in 4th grade to Ytterbium lasers in forensic jargon, we’ve got it all. Buckle up, word wizards, because ‘Y’ not join the lexical fun?

Science Words That Start With Y

4th Grade Science Words With Y:

Word	Meaning
Yeast	Microscopic fungi
Yolk	Nutrient storage in eggs
Yield	Amount produced
Yucca	Desert plant
Year	365 days
Young	Early in life
Y-axis	Vertical axis in a graph
Yellow	Color
Yarn	Spun fibers
Yam	Edible root vegetable
Yonder	Distant
Yawn	Involuntary opening of mouth
Yard	Unit of length
Yacht	Boat
Yew	Evergreen tree
Yucky	Unpleasant
Yelp	Sharp cry
Yes	Affirmative response
Yummy	Delicious
Youthful	Young in appearance or spirit

5th Grade Science Words With Y:

Word	Meaning
Yield Strength	Stress at which a material deforms
Yttrium	Chemical element
Young’s Modulus	Measure of stiffness
Y Chromosome	Sex chromosome
Yellow Dwarf	Type of star
Ytterbium	Rare earth element
Yearly	Happening every year
Yeast Infection	Fungal infection
Yield Point	Point at which material deforms
Yolk Sac	Early embryo structure
Y-linked Gene	Gene on Y chromosome
Ytterbia	Rare earth oxide
Yottabyte	Unit of digital information
Yellow Fever	Viral disease transmitted by mosquitos
Yellowstone	National Park in the U.S.
Yaw	Side-to-side motion of a vehicle
Yawning	Involuntary action of opening mouth wide
Yeoman	Attendant or servant
Yolked	Having a yolk
Youth	Young age or period of life

6th Grade Science Words With Y:

Word	Meaning
Yucca Plant	Desert plant
Y-axis Interception	Y-coordinate at the x-axis
Yttria	Oxide of yttrium
Yersinia Pestis	Bacterium causing plague
Yield Curve	Graph of yield vs. maturity
Yottajoule	Unit of energy
Yellowcake	Uranium concentrate
Yoctosecond	Extremely short time unit
Young Scientist	Early career researcher
Yarn Count	Measure of yarn thickness
Yeast Cell	Single-celled fungus
Yttrium Oxide	Compound of yttrium and oxygen
Yolk Membrane	Membrane around egg yolk
Y-axis Asymptote	Line approached but not reached
Yellow Soil	Soil with high iron content
Yardstick	Measure of length
Yew Tree	Evergreen tree
Youth Science	Scientific study of youth
Yawning Reflex	Involuntary opening of mouth due to tiredness
Yeomanry	Volunteer cavalry

7th Grade Science Words With Y:

Word	Meaning
Ytterbium Laser	Laser using ytterbium as the gain medium
Yottameter	Unit of length
Yield Stress	Stress at which a material deforms
Yttrium Barium Copper Oxide	Superconductor material
Yaw-Pitch-Roll	Aircraft motion axes
Yeast Fermentation	Conversion of sugars into alcohol by yeast
Y-chromosome Analysis	Genetic analysis of the Y chromosome
Yellow Phase	Phase of matter
Yolk Platelet	Component of egg
Ytterbite	Rare mineral
Young’s Experiment	Double-slit interference experiment
Yield Ratio	Ratio of output to input
Yarn-dyed	Colored before weaving
Yellow Marrow	Type of bone marrow
Yearling	Young animal
Youthfulness	State of being young
Yieldingness	Willingness to yield or bend
Ypsiliform	Resembling the letter Y
Yttriferous	Containing yttrium
Yttrium-90	Radioactive isotope of yttrium

8th Grade Science Words With Y:

Word	Meaning
Yttrium-Aluminium-Garnet	Crystal used in lasers
Ytterbium Fiber Amplifier	Device amplifying light using ytterbium
Yoctogram	Unit of mass
Yellowstone Caldera	Volcanic crater in Yellowstone National Park
Young’s Modulus of Elasticity	Measure of material stiffness
Yttrium Iron Garnet	Magnetic material
Y-axis Symmetry	Symmetry with respect to the y-axis
Yottawatt	Unit of power
Yoctoliter	Unit of volume
Yield Management	Business strategy for optimizing revenue
Yottavolt	Unit of electric potential difference
Y-Chromosome Haplogroups	Groups of genes on the Y chromosome
Yarn Strength	Measure of yarn’s strength
Yellow Biotechnology	Biotechnology using yellow organisms
Yoldia Sea	Ancient sea
Ytterbium Doped	Material doped with ytterbium
Yearbook Science	Scientific content in a yearbook
Yieldable	Capable of producing a yield
Yeast Genetics	Study of genetics using yeast
Yottasecond	Unit of time

Science Words Starting With Y (By Subject):

Physics:

Word	Meaning
Yarkovsky Effect	Force affecting the motion of small objects in space
Young’s Modulus	Measure of stiffness of a material
Yoctosecond	Extremely short time unit
Ytterbium Clock	Atomic clock using ytterbium atoms
Yttrium	Chemical element
Ytterbium	Rare earth element
Yoctometer	Unit of length
Yang-Mills Theory	Theory in particle physics
Yield Point	Point at which material deforms
Yttrium Garnet	Crystal used in lasers
Yottajoule	Unit of energy
Yoctowatt	Unit of power
Yb:YAG Laser	Laser using ytterbium-doped YAG crystal
Ytterbium-doped Fiber Amplifier	Device amplifying light using ytterbium-doped fiber
Young’s Interference Experiment	Experiment demonstrating wave interference
Yottavolt	Unit of electric potential difference
Yoctogram	Unit of mass
Yoctoliter	Unit of volume

Chemistry:

Word	Meaning
Yield	Amount produced
Yttrium	Chemical element
Ytterbium	Rare earth element
Yellowcake	Concentrated form of uranium
Ytterbia	Rare earth oxide
Yttria	Oxide of yttrium
Ytterbium Oxide	Compound of yttrium and oxygen
Ytterbium Fiber Amplifier	Device amplifying light using ytterbium
Yield Coefficient	Measure of chemical reaction efficiency
Ytterbium Doping	Adding ytterbium to a material
Ytterbium Fluoride	Compound of ytterbium and fluorine
Yottamole	Unit of amount of substance
Yttrium Alloy	Alloy containing yttrium
Yttrium Oxide	Compound of yttrium and oxygen
Yellow Phosphorus	Allotrope of phosphorus
Yttrium-90	Radioactive isotope of yttrium
Ytterbite	Rare mineral
Yttrium Barium Copper Oxide	High-temperature superconductor material

Biology:

Word	Meaning
Yeast	Microscopic fungi
Y Chromosome	Sex chromosome
Yellow Fever	Viral disease transmitted by mosquitos
Yolk Sac	Early embryo structure
Yucca Plant	Desert plant
Y-linked Gene	Gene on Y chromosome
Yawning	Involuntary action of opening mouth wide
Yolk Platelet	Component of egg
Yolk	Nutrient storage in eggs
Yew Tree	Evergreen tree
Yellow Marrow	Type of bone marrow
Yeast Fermentation	Conversion of sugars into alcohol by yeast
Y-chromosome Haplogroups	Groups of genes on the Y chromosome
Yolk Membrane	Membrane around egg yolk
Yersinia Pestis	Bacterium causing plague
Young’s Modulus	Measure of stiffness of a material
Yolked	Having a yolk
Yield Stress	Stress at which a material deforms
Youthfulness	State of being young
Yottabyte	Unit of digital information

Math:

Word	Meaning
Y-axis	Vertical axis in a graph
Y-intercept	Point where a line crosses the y-axis
Yen	Currency used in mathematical problems
Yield	Return on investment in financial mathematics
Yoctosecond	Extremely short time unit
Yottabyte	Unit of digital information
Yottawatt	Unit of power
Yottameter	Unit of length
Y-coordinate	Vertical coordinate in a graph
Ytterbium	Placeholder in algebraic expressions
Yoctogram	Unit of mass
Yttrium	Placeholder in algebraic expressions
Young’s Inequality	Inequality in mathematical analysis
Yarn	Geometric line in textile problems
Yawning	Probability concept, e.g., chance of yawning within 5 minutes
Yard	Unit of measure
Yottasecond	Unit of time
Yield Curve	Economic and financial graph
Yottavolt	Unit of electric potential difference
Year	Used in interest and annuity calculations

Physical Science:

Word	Meaning
Yttrium	Chemical element
Ytterbium	Rare earth element
Yield Stress	Stress at which a material deforms
Young’s Modulus	Measure of stiffness of a material
Yellowcake	Concentrated form of uranium
Ytterbia	Rare earth oxide
Yttria	Oxide of yttrium
Ytterbium Oxide	Compound of yttrium and oxygen
Yield Point	Point at which material deforms
Yttrium Oxide	Compound of yttrium and oxygen
Yttrium Alloy	Alloy containing yttrium
Ytterbium Laser	Laser using ytterbium as the gain medium
Yttrium-Aluminium-Garnet	Crystal used in lasers
Yttrium Iron Garnet	Magnetic material
Yttrium Barium Copper Oxide	High-temperature superconductor material
Ytterbium Fiber Amplifier	Device amplifying light using ytterbium
Yellow Phosphorus	Allotrope of phosphorus
Ytterbium Doping	Adding ytterbium to a material
Yield Coefficient	Measure of chemical reaction efficiency
Yttrium-90	Radioactive isotope of yttrium
Yttrium Garnet	Crystal used in lasers
Yoctosecond	Extremely short time unit
Yottajoule	Unit of energy
Yoctometer	Unit of length
Yoctowatt	Unit of power

Scientific Words:

Word	Meaning
Yttrium	Chemical element
Ytterbium	Rare earth element
Yield Strength	Stress at which a material deforms
Young’s Modulus	Measure of stiffness of a material
Y-chromosome	Sex chromosome
Yolk Sac	Early embryo structure
Yttria	Oxide of yttrium
Ytterbia	Rare earth oxide
Yottabyte	Unit of digital information
Yellowstone	National Park in the U.S.

Scientific Words (Continued):

Word	Meaning
Yawn	Involuntary action of opening mouth wide
Yeoman	Attendant or servant
Yucca	Desert plant
Yolk	Nutrient storage in eggs
Yaw	Side-to-side motion of a vehicle
Y-axis Symmetry	Symmetry with respect to the y-axis
Yellow Biotechnology	Biotechnology using yellow organisms
Yolked	Having a yolk
Yearling	Young animal
Yeast Genetics	Study of genetics using yeast
Yawning Reflex	Involuntary opening of mouth due to tiredness
Youth Science	Scientific study of youth
Yottasecond	Unit of time
Yottameter	Unit of length
Yttriferous	Containing yttrium

Forensic Words with Y:

Word	Meaning
Y-STR (Y Chromosome Short Tandem Repeat)	Genetic marker used in forensic DNA analysis
Yellow Brown Stain	Stain color often relevant in forensics
Y-chromosome Analysis	Examination of genetic information on the Y chromosome
Yield Sign Impression	Impression left by a yield sign
Yarn Pattern Analysis	Examination of patterns in yarn
Yaw Marks (in accident reconstruction)	Marks indicating vehicle rotation in an accident
Yearly Statistical Report	Annual report on crime statistics
Yaw (in bloodstain pattern analysis)	Directionality of bloodstains in forensic analysis
Y-incision (in autopsies)	Incision in the shape of the letter Y in autopsy procedures
Yellowness Index (in colorimetry)	Measure of the color yellow in a material
Yield Strength (in materials analysis)	Strength of a material at the point of plastic deformation
Yttrium-Aluminium-Garnet Laser	Laser used in certain forensic applications
Yoked Control (in experimental design)	Control group paired with an experimental group in a study
Young’s Modulus (in materials testing)	Measure of material stiffness in forensic analysis
Yolk DNA Testing	DNA analysis specific to the yolk of an egg
Yeast Cell Typing	Typing of yeast cells in forensic analysis
Yttrium Oxide (in trace evidence)	Traces of yttrium oxide used in forensic investigations
Yardstick Measurement (in crime scene measurement)	Measurement using a yardstick in forensic work
Youthful Offender Analysis	Analysis of cases involving youthful offenders
Yttrium-90 in Radioactive Tracing	Use of yttrium-90 in tracking radioactive substances in forensics

Here are 10 quizzes, science words starting with ‘Y’:

Quiz 1: 4th Grade Science – Y-Words

What is a microscopic fungus commonly used in baking and brewing?
a) Yolk
b) Year
c) Yeast
Which term refers to the color between green and orange?
a) Yarn
b) Yellow
c) Yonder
In a graph, what does the vertical axis represent?
a) Y-axis
b) Yawn
c) Yard

Quiz 2: 5th Grade Science – Yttrium and Beyond

What is the chemical element represented by the symbol Y?
a) Ytterbium
b) Yttrium
c) Yarn
In physics, what does Young’s Modulus measure?
a) Stiffness
b) Yield Strength
c) Yawning
What is a type of star characterized by its color?
a) Y Chromosome
b) Yellow Dwarf
c) Yarn Count

Quiz 3: 6th Grade Science – Yucca and Yottajoule

Which desert plant is often used in landscaping?
a) Yew Tree
b) Yucca Plant
c) Yolk Membrane
What unit is used to measure energy equivalent to one septillion joules?
a) Yottajoule
b) Yarn Strength
c) Yarn-dyed
In geometry, what does the Y-axis asymptote represent?
a) Y-axis Interception
b) Yottavolt
c) Y-axis Asymptote

Quiz 4: 7th Grade Science – Ytterbium Laser and More

Which high-tech device uses ytterbium as the gain medium?
a) Yarn-dyed
b) Yottameter
c) Ytterbium Laser
What is the stress at which a material deforms called?
a) Ytterbia
b) Yield Stress
c) Yttria
Which phase of matter is often associated with the color yellow?
a) Yawning
b) Yellow Phase
c) Yearling

Quiz 5: 8th Grade Science – Yottawatt and Beyond

What unit is used to measure power equal to one septillion watts?
a) Yarn Strength
b) Yottawatt
c) Yoldia Sea
In crystallography, what is Yttrium Iron Garnet used for?
a) Magnetic material
b) Y-axis Symmetry
c) Yttrium Iron Garnet
Which financial strategy aims to optimize revenue?
a) Yield Strength
b) Yield Management
c) Yeast Genetics

Quiz 6: Physics – Yarkovsky Effect and More

What force affects the motion of small objects in space due to sunlight?
a) Ytterbium Clock
b) Ytterbium
c) Yarkovsky Effect
What does the Y-axis represent in a graph?
a) Yang-Mills Theory
b) Yttrium Garnet
c) Y-axis
In atomic clocks, what element is often used in ytterbium-doped form?
a) Yb:YAG Laser
b) Yottavolt
c) Ytterbium-doped Fiber Amplifier

Quiz 7: Chemistry – Yellowcake and Beyond

What is the concentrated form of uranium called?
a) Ytterbia
b) Yarn
c) Yellowcake
Which rare earth element is represented by the symbol Yb?
a) Yttrium
b) Yb
c) Yottamole
What compound results from adding ytterbium to a material?
a) Ytterbium Fluoride
b) Yttrium-90
c) Yttrium Doping

Quiz 8: Biology – Yawning and Yolked

What is the involuntary action of opening the mouth wide called?
a) Ytterbium Barium Copper Oxide
b) Yawning
c) Yolk Platelet
Which part of an egg serves as a nutrient storage?
a) Y-linked Gene
b) Yew Tree
c) Yolk
What is the study of genetics using yeast called?
a) Ytterbium Laser
b) Y-Chromosome Haplogroups
c) Yeast Genetics

Quiz 9: Math – Y-coordinate and Yottabyte

In a graph, what does the vertical coordinate represent?
a) Y-axis
b) Y-coordinate
c) Y-intercept
What is the unit of digital information equal to one septillion bytes?
a) Yottasecond
b) Yottabyte
c) Yottawatt
In financial mathematics, what does “Yield” typically refer to?
a) Ytterbium
b) Yield
c) Yarn

Quiz 10: Physical Science – Yellow Phosphorus and More

Which allotrope of phosphorus is yellow in color?
a) Ytterbium Fiber Amplifier
b) Yellow Phosphorus
c) Ytterbium Doping
What is the measure of material stiffness called?
a) Young’s Modulus
b) Yawning Reflex
c) Yolk Membrane
Which crystal is often used in lasers and exhibits Y-axis symmetry?
a) Yttrium-Aluminium-Garnet
b) Yttrium Iron Garnet
c) Yellow Biotechnology

Feel free to use these quizzes for a fun and engaging exploration of science words starting with ‘Y’!

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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 linguistic cosmos! We’ve traversed the scientific terrain, unraveling the enigma of ‘Y’ in a spectrum ranging from 4th-grade wonder to the intricate world of forensic science.

From yeast to Ytterbium, Y-axis to Y-STR, each word is like a tiny constellation in the vast galaxy of knowledge.

Summary