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Physics Fundamentals for Teens

Physics

A collection of factual physics questions covering motion, energy, electricity, and light.

science education physics
15 Questions Easy Ages 13+ Aug 21, 2026
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About this Study Set

This study set covers Physics through 15 practice questions. A collection of factual physics questions covering motion, energy, electricity, and light. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 15 questions from the Physics Fundamentals for Teens study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the SI unit for measuring force?
  • A Joule
  • B Newton
  • C Watt
  • D Pascal
2 Which state of matter has a definite shape and a definite volume?
  • A Gas
  • B Liquid
  • C Plasma
  • D Solid
3 What is the speed of light in a vacuum approximately equal to?
  • A 300,000 km/s
  • B 1,000 km/s
  • C 50,000 km/s
  • D 1,000,000 km/s
4 Which law states that for every action, there is an equal and opposite reaction?
  • A Newton's First Law
  • B Newton's Second Law
  • C Newton's Third Law
  • D Archimedes' Principle
5 What is the primary unit used to measure electric current?
  • A Volt
  • B Ohm
  • C Ampere
  • D Watt
6 What is the term for the energy an object possesses due to its motion?
  • A Potential energy
  • B Kinetic energy
  • C Thermal energy
  • D Chemical energy
7 Which subatomic particle carries a negative electric charge?
  • A Proton
  • B Neutron
  • C Electron
  • D Nucleus
8 What is the definition of power in physics?
  • A Force applied over time
  • B Work done per unit time
  • C Total distance traveled
  • D Energy stored in a system
9 Which part of the electromagnetic spectrum has the longest wavelength?
  • A Gamma rays
  • B Visible light
  • C Radio waves
  • D X-rays
10 What happens to the temperature of a substance during a phase change?
  • A It increases
  • B It decreases
  • C It remains constant
  • D It fluctuates
11 What is the acceleration due to gravity on Earth approximately?
  • A 4.9 m/s²
  • B 9.8 m/s²
  • C 19.6 m/s²
  • D 1.6 m/s²
12 Which simple machine is a rigid bar that pivots on a fulcrum?
  • A Pulley
  • B Lever
  • C Inclined plane
  • D Screw
13 What does the Law of Conservation of Energy state?
  • A Energy can be created
  • B Energy is destroyed by friction
  • C Energy cannot be created or destroyed
  • D Energy only exists as heat
14 What is the measure of an object's resistance to a change in its state of motion?
  • A Mass
  • B Weight
  • C Density
  • D Volume
15 What type of lens is used to correct nearsightedness?
  • A Concave lens
  • B Convex lens
  • C Cylindrical lens
  • D Bifocal lens
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