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Quizzes > High School Quizzes > Science

Master Your Stem Test Practice Quiz

Boost your skills with sample test questions

Difficulty: Moderate
Grade: Grade 7
Study OutcomesCheat Sheet
Paper art depicting a fun trivia quiz for high school students on STEM subjects.

What is the basic unit of life?
Cell
Atom
Molecule
Organ
Cells are the smallest living structures that make up all organisms. They perform essential life functions, making them the basic unit of life.
Which of the following numbers is prime?
2
4
6
8
A prime number has only two distinct positive divisors: 1 and itself. Among these options, only the number 2 meets that criterion.
Which planet is known as the Red Planet?
Mars
Venus
Jupiter
Saturn
Mars is often called the Red Planet because of its reddish appearance caused by iron oxide on its surface. It is one of the most recognizable planets in our solar system.
What force keeps us on the ground on Earth?
Gravity
Magnetism
Friction
Inertia
Gravity is the force that draws objects toward the center of the Earth, keeping us grounded. It is one of the fundamental forces that affects all matter.
Which of these devices is primarily used to measure temperature?
Thermometer
Barometer
Hygrometer
Anemometer
A thermometer is an instrument used to measure temperature by detecting changes in physical properties. Its design makes it essential for both scientific experiments and everyday use.
What is the length of the hypotenuse of a right triangle with legs measuring 3 cm and 4 cm?
5 cm
6 cm
7 cm
4 cm
Using the Pythagorean theorem, the hypotenuse is calculated as √(3² + 4²) = √(9 + 16) = √25 = 5 cm. This theorem is a fundamental concept in geometry.
Which gas is most abundant in Earth's atmosphere?
Nitrogen
Oxygen
Carbon Dioxide
Helium
Nitrogen constitutes about 78% of the Earth's atmosphere, making it the most abundant gas. Oxygen is the second most common, while the others are present in much smaller amounts.
What is the chemical formula for water?
H2O
CO2
O2
NaCl
Water is composed of two hydrogen atoms bonded to one oxygen atom, represented by H2O. This basic chemical formula is a cornerstone in understanding chemistry.
What process do plants use to convert sunlight into energy?
Photosynthesis
Respiration
Transpiration
Digestion
Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose and oxygen. This process is crucial for sustaining life on Earth.
In engineering, what does the acronym CAD stand for?
Computer-Aided Design
Computer-Assisted Data
Constructive Analysis Design
Calculated Automatic Drawing
CAD stands for Computer-Aided Design, which is a tool that helps engineers and designers create detailed models and drawings. It increases precision and efficiency in the design process.
Which of the following best describes an ecosystem?
A community of living organisms interacting with their environment
A system for solving algebraic equations
An electronic network for communication
A method for calculating area
An ecosystem is a community where living organisms interact with each other and with their physical environment. This concept is fundamental in the study of biology and environmental science.
What is the result of mixing an acid with a base?
Neutralization
Oxidation
Reduction
Catalysis
Mixing an acid with a base results in a neutralization reaction, typically producing water and a salt. This reaction is a basic concept in chemistry.
Which form of energy is stored in the chemical bonds of a substance?
Chemical energy
Kinetic energy
Electrical energy
Thermal energy
Chemical energy is the potential energy stored within the bonds of atoms and molecules. It is released or absorbed during chemical reactions, making it a key concept in energy transformations.
What is the main function of the cell membrane in a cell?
Regulating what enters and exits the cell
Storing genetic information
Producing energy
Synthesizing proteins
The cell membrane acts as a selective barrier that regulates the passage of substances into and out of the cell. This control is vital for maintaining the cell's internal environment.
Which electronic component allows current to flow in only one direction?
Diode
Resistor
Capacitor
Inductor
A diode is designed to allow electrical current to flow in one direction only, preventing reverse flow. This characteristic is fundamental in circuits that require current rectification.
A car travels 150 km in 3 hours. What is its average speed?
50 km/h
45 km/h
55 km/h
60 km/h
Average speed is calculated by dividing the total distance by the total time. Dividing 150 km by 3 hours results in an average speed of 50 km/h.
If the angle of incidence equals the angle of reflection, which physical principle is being demonstrated?
Law of Reflection
Snell's Law
Law of Refraction
Diffraction
The Law of Reflection states that the angle at which light or a wave hits a surface (angle of incidence) is equal to the angle at which it reflects off the surface. This principle is fundamental in the study of optics.
What is the primary purpose of using a catalyst in a chemical reaction?
To lower the activation energy
To increase the equilibrium constant
To change the products formed
To supply energy to the reaction
A catalyst accelerates a chemical reaction by lowering the activation energy required, without being consumed in the process. This allows more molecules to react, thereby increasing the reaction rate.
In a series circuit with several resistors, how does increasing the total resistance affect the overall current if the voltage remains constant?
It decreases the current
It increases the current
It has no effect on the current
It reverses the direction of the current
According to Ohm's Law, current is inversely proportional to resistance when voltage is constant. Therefore, increasing total resistance results in a decrease in the overall current.
When scaling up a scientific experiment, which factor is most critical to maintain consistency in the results?
Controlled variables
Ambient temperature
Number of trials
Equipment brand
Maintaining controlled variables ensures that experimental conditions are consistent, so any changes in results can be attributed solely to the variable being tested. This is essential for reliable and reproducible scientific outcomes.
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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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