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Quizzes > High School Quizzes > Science

Master Your Stem Test Practice Quiz

Boost your skills with sample test questions

Editorial: Review CompletedCreated By: Liz SowersUpdated Aug 26, 2025
Difficulty: Moderate
Grade: Grade 7
Study OutcomesCheat Sheet
Paper art depicting a fun trivia quiz for high school students on STEM subjects.

This free STEM test practice quiz helps you review high school science, technology, engineering, and math in 20 quick questions. Use it to spot gaps before a test, see clear answer notes with learning goals, and follow helpful reading links so you know what to study next.

Which subatomic particle determines the element's identity (its atomic number)?
Proton (The count of protons defines the atomic number and the element)
Neutron
Positron
Electron
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What is the acceleration due to gravity near Earth's surface in m/s^2 (approximate)?
9.8 (Standard average gravitational acceleration at sea level)
6.7
3.0
12.0
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In DNA, adenine pairs with which base?
Guanine
Cytosine
Uracil
Thymine (A-T pairing is a key base-pair rule in DNA)
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Ohm's law relates voltage, current, and resistance. Which equation is correct?
P = I R
R = V + I
V = I R (Voltage equals current times resistance)
I = V R
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The slope of the line y = 3x - 5 is
-3
-5
3 (Coefficient of x is the slope in slope-intercept form)
5
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Which function has a domain of all real numbers except x = -3?
f(x) = 1/(x + 3) (Undefined where denominator is zero)
f(x) = x^2 + 3
f(x) = sqrt(x + 3)
f(x) = |x + 3|
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Which process releases energy from glucose in the absence of oxygen?
Anaerobic respiration (Fermentation pathways operate without O2)
Aerobic respiration
Photosynthesis
Chemiosmosis only
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What is the pH of a neutral aqueous solution at 25 C?
7 (Neutral point where [H+] = [OH-])
0
14
1
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A car travels at 20 m/s for 15 s. How far does it go?
200 m
300 m (Distance = speed x time)
75 m
35 m
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Which data display is best to show the distribution and median for a single quantitative variable?
Pie chart
Pictogram
Box-and-whisker plot (Highlights median and quartiles)
Clustered bar chart
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Which gas law describes the inverse relationship between pressure and volume at constant temperature?
Charles's law
Gay-Lussac's law
Boyle's law (P proportional to 1/V at constant T)
Avogadro's law
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A function f is linear with f(2)=7 and f(5)=16. What is f(0)?
1 (Slope=(16-7)/(5-2)=3, so f(x)=3x+1)
-1
-2
4
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Which biomolecule is the primary energy currency in cells?
NADH
DNA
Glucose
ATP (Adenosine triphosphate stores and transfers energy)
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An object in uniform circular motion has constant speed. What about its acceleration?
It is zero
It increases linearly with time
It is nonzero and directed toward the center (Centripetal acceleration)
It is tangential and zero in magnitude
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Which technique separates pigments based on polarity differences?
Electrophoresis
Paper chromatography (Differential affinities to stationary and mobile phases)
Centrifugation
Distillation
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A projectile is launched horizontally from a cliff. Ignoring air resistance, its horizontal velocity
Remains constant (No horizontal acceleration)
Oscillates
Decreases linearly
Increases linearly
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Which transformation makes a linear regression more appropriate for an exponential relationship y = a b^x?
Square the x-values
Differentiate y with respect to x
Take square roots of x
Take logarithms of y (log y linearizes exponential data)
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In acid-base chemistry, a buffer best resists pH change when
Only strong acids are used
[A-] is 10 times [HA]
[HA] is 10 times [A-]
[HA] is approximately equal to [A-] (Henderson-Hasselbalch optimum)
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Which logic gate outputs 1 only when inputs are different?
XOR (Exclusive OR is true for unequal inputs)
NAND
OR
AND
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True or False: The Doppler effect explains the redshift of galaxies due to space expansion exactly like motion through space.
False
True
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0

Study Outcomes

  1. Analyze exam-style questions to reinforce core STEM concepts.
  2. Apply problem-solving strategies to challenging STEM scenarios.
  3. Evaluate scientific and mathematical principles in practical contexts.
  4. Demonstrate comprehensive test preparation through effective quiz engagement.

STEM Test Practice Cheat Sheet

  1. Master the Pythagorean Theorem - In a right‑angle triangle, a² + b² = c² transforms three side lengths into one neat equation, revealing the mystery hypotenuse in a flash. Use this formula to conquer distance puzzles, architectural problems, and even video game map calculations! You'll feel like a geometry wizard every time you apply it. The 10 Most Important Mathematical Formulas for High School Students
  2. Understand the Quadratic Formula - When quadratics throw tricky curves, x = (−b ± √(b² − 4ac))❄(2a) is your secret weapon to find the roots faster than a race car. This formula handles any quadratic equation, from projectile motion problems to economic break‑even analyses. Memorize it and watch quadratic mysteries unravel like magic! The 10 Most Important Mathematical Formulas for High School Students
  3. Learn the Slope Formula - Slope m = (y₂ − y₝)❄(x₂ − x₝) gives you the "tilt" or steepness of any line, turning coordinate pairs into a simple fraction. Whether you're graphing linear functions or planning a driveway incline, this formula shows you how fast you're climbing or descending. It's like a mathematical GPS for straight roads! The 10 Most Important Mathematical Formulas for High School Students
  4. Familiarize Yourself with the Distance Formula - Distance d = √[(x₂ − x₝)² + (y₂ − y₝)²] is just Pythagoras in disguise for point‑to‑point measurement. Use it to calculate straight‑line distances on maps, between cities, or across game grids. It's your go‑to tool whenever you need the exact length of a "line between two dots." The 10 Most Important Mathematical Formulas for High School Students
  5. Grasp the Midpoint Formula - Midpoint M = ((x₝ + x₂)❄2, (y₝ + y₂)❄2) pinpoints the exact center between two coordinates, splitting any line segment into equal halves. This is perfect for finding the halfway mark on a road trip or aligning graphics in design projects. Think of it as your mathematical "center-finder"! The 10 Most Important Mathematical Formulas for High School Students
  6. Understand the Area of a Triangle - Area A = ½ × base × height turns triangle sizing into a straightforward multiplication problem. From land survey calculations to art projects, this formula helps you figure out how much space your triangle occupies. It's the backbone of every geometry class and a blueprint for real‑world design! The 10 Most Important Mathematical Formulas for High School Students
  7. Know the Circumference and Area of a Circle - Circumference C = 2πr measures a circle's "round‑trip" distance, while Area A = πr² tells you how much space it covers. These go‑to formulas pop up in everything from wheel dynamics to pizza‑slicing math. Once you know r, you've got the whole circle's secrets at your fingertips! The 10 Most Important Mathematical Formulas for High School Students
  8. Learn the Law of Sines - In any triangle, a/sin A = b/sin B = c/sin C links sides and opposite angles, making non‑right triangles solvable. Use it for navigation, astronomy, or engineering puzzles where right angles don't exist. It's like having a universal triangle decoder in your math toolbox! The 10 Most Important Mathematical Formulas for High School Students
  9. Understand the Law of Cosines - c² = a² + b² − 2ab·cos C generalizes the Pythagorean Theorem to any triangle angle, giving you the third side when you know two sides and their included angle. Tackle oblique triangles in surveying, physics, or 3D modeling with this powerful extension. It's the geometry all‑rounder you never knew you needed! The 10 Most Important Mathematical Formulas for High School Students
  10. Familiarize Yourself with Exponential Growth and Decay - y = a·e^(kt) models how populations explode, radioactive materials fade, or investments grow over time. In this formula, a is the starting amount, k is the growth or decay rate, and t is time - perfect for science projects and finance forecasts. It's your mathematical crystal ball for anything that changes exponentially! The 10 Most Important Mathematical Formulas for High School Students
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