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9th Grade Trivia Questions: Test Your Knowledge

Quick, free 9th grade trivia to check your knowledge. Instant results.

Editorial: Review CompletedCreated By: Muhammad Faisal WahyuUpdated Aug 26, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art style quiz header with 9th grade trivia theme featuring English, science, and math symbols on sky blue background

This quiz helps you practice 9th grade trivia questions across English, science, and math while spotting what to review. For focused study, try the 9th grade grammar test and the 9th grade math test, or check your level with a 9th grade placement test.

In the sentence "The quick brown fox jumps over the lazy dog," what is the subject?
fox (the doer of the action jumps)
over the lazy dog
dog
jumps
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Solve for x: 3x - 5 = 16.
x = 6
x = -7
x = 9
x = 7 (because 3x = 21, so x = 7)
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Which organelle is known as the powerhouse of the cell?
Mitochondrion (site of cellular respiration producing ATP)
Nucleus
Ribosome
Golgi apparatus
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A hypothesis is a proven fact.
True
False
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What is the sum of the interior angles of any triangle?
270 degrees
90 degrees
180 degrees (triangle angle sum theorem)
360 degrees
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Which sentence contains a simile?
Her smile was like sunshine (uses like to compare)
He ran a marathon yesterday
The leaves whispered
Time is a thief
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Acceleration has SI units of meters per second squared (m/s^2).
False
True
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What does an element's atomic number represent?
Number of protons (defines the element)
Number of neutrons
Atomic mass
Number of electrons in the outer shell only
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Find the slope of the line passing through (2, 5) and (6, 13).
1/2
4
-2
2 (slope = (13 - 5) / (6 - 2) = 8/4)
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Which sentence is in the passive voice?
The player will kick the ball
The ball was kicked by the player (be + past participle)
Kicking the ball is fun
The player kicks the ball
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Mass changes when you travel to the Moon.
False
True
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Which layer of Earth is liquid and responsible for Earth's magnetic field?
Outer core (liquid iron-nickel generates the field)
Inner core
Crust
Mantle
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Factor the expression x^2 - 9x + 20.
(x - 5)(x - 4) (numbers multiply to 20 and sum to 9)
(x - 10)(x + 2)
(x - 6)(x - 3)
(x - 20)(x + 1)
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Sound travels faster in air than in water.
True
False
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Which best defines the domain of a function f(x)?
The slope of the function
All output values f(x)
The zeros of the function
All input values x for which f(x) is defined (allowed x-values)
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Solve the system: 2x + y = 7 and x - y = 1.
x = 8/3, y = 1/3 (substitute or add equations)
x = 4, y = -1
x = 3, y = 1
x = 2, y = 3
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Which sentence avoids a comma splice?
I finished my homework; then I read a book (semicolon joins two independent clauses)
I finished my homework, I read a book
I finished my homework, and read a book, and ate
I finished my homework, I then read
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Which property of water helps regulate Earth's climate?
High specific heat (absorbs/releases large amounts of energy)
Low surface tension
High compressibility
Low boiling point
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If f(x) = 2x^2 - 8x + 6, what is the vertex x-value?
x = 1
x = -2
x = 3
x = 2 (x = -b/2a = 8/4)
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Which event releases energy from ATP for cellular work?
Absorbing light in carotenoids
Breaking the terminal phosphate bond (ATP -> ADP + Pi releases energy)
Forming glucose from CO2
Adding a phosphate group to ADP
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Study Outcomes

  1. Recall Core Literature Facts -

    After this quiz, you'll be able to remember important literary terms, authors, and plot points commonly covered in 9th grade English questions.

  2. Apply Algebra and Geometry Skills -

    You'll confidently solve typical 9th grade math trivia questions by applying algebraic equations and basic geometric reasoning.

  3. Explain Scientific Principles -

    You will understand and articulate fundamental biology, chemistry, and physics concepts tested in 9th grade science puzzles.

  4. Analyze Trivia Challenges -

    By engaging with a variety of topics, you'll sharpen your analytical thinking and strategy to tackle future trivia questions.

  5. Track Your Progress -

    With a scored format, you'll assess your current knowledge level and identify areas for improvement in 9th grade subjects.

  6. Boost Confidence -

    Regular practice of these trivia questions will strengthen your recall abilities and give you a playful confidence boost in academic quizzes.

Cheat Sheet

  1. Metaphors, Similes, and Personification -

    Recognizing these literary devices is crucial for English section trivia questions for 9th graders as they often ask you to identify or interpret figurative language. Metaphors directly compare two unlike things (e.g., "Time is a thief") while similes use "like" or "as" (e.g., "as brave as a lion"). Personification gives human traits to non-human subjects and adds vivid imagery to texts.

  2. Slope-Intercept Form Fundamentals -

    Understanding y = mx + b is key for algebra sections in many 9th grade trivia questions. Here, slope m represents rise over run and b is the y-intercept - just plot the intercept and use the slope to find another point. Knowing that m = Δy/Δx (rise/run) makes graphing linear functions much faster.

  3. Quadratic Formula Mastery -

    The quadratic formula x = ( - b ± √(b² - 4ac)) / (2a) is your go-to tool for solving any quadratic equation. You'll often see it pop up in 9th grade trivia questions that require finding the roots of ax² + bx + c = 0. Remember "negative b, plus or minus the square root" as the first line of the tune to recall it quickly.

  4. Pythagorean Theorem Application -

    In right triangles, a² + b² = c² links the two legs and the hypotenuse, making it a staple of geometry trivia and many 9th grade questions. You can calculate an unknown side by rearranging the formula or use the 3-4-5 triangle as a quick integer example. This theorem is rooted in ancient Greek mathematics but remains essential for modern problem-solving tasks.

  5. Scientific Method Steps -

    Knowing the order - Question, Hypothesis, Experiment, Analysis, Conclusion - is essential for science sections and 9th grade trivia questions that test process understanding. A handy acronym is "Quick Hunters Eat Apple Crumble," which helps you recall each step in sequence. Applying these steps systematically ensures your experiments and real-world data collection stay on track.

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