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Basic Physics Concepts

Physics

A collection of easy-level, fact-based physics questions suitable for teenagers.

mechanics electricity light sound energy
15 Questions Easy Ages 13+ Aug 20, 2026
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About this Study Set

This study set covers Physics through 15 practice questions. A collection of easy-level, fact-based physics questions suitable for teenagers. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

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

1 What is the SI unit of force?
  • A Watt
  • B Joule
  • C Newton
  • D Pascal
2 Which of the following is a form of potential energy?
  • A Kinetic energy
  • B Thermal energy
  • C Gravitational potential energy
  • D Sound energy
3 What force keeps planets in orbit around the Sun?
  • A Electromagnetic force
  • B Strong nuclear force
  • C Weak nuclear force
  • D Gravitational force
4 What is the speed of light in a vacuum?
  • A Approximately 300,000 meters per second
  • B Approximately 300,000 kilometers per hour
  • C Approximately 300,000 miles per second
  • D Approximately 300,000 miles per hour
5 What is the SI unit of electric current?
  • A Volt
  • B Ohm
  • C Ampere
  • D Watt
6 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 Ohm's Law
7 What causes objects to appear in different colors?
  • A Reflection of light
  • B Absorption of light
  • C Refraction of light
  • D Diffraction of light
8 What is the unit of electrical resistance?
  • A Farad
  • B Henry
  • C Siemens
  • D Ohm
9 What is the process by which a liquid turns into a gas?
  • A Melting
  • B Freezing
  • C Boiling
  • D Condensation
10 What is the SI unit of energy?
  • A Watt
  • B Newton
  • C Pascal
  • D Joule
11 What type of energy is stored in a stretched rubber band?
  • A Kinetic energy
  • B Chemical energy
  • C Elastic potential energy
  • D Thermal energy
12 What is the phenomenon where light bends as it passes from one medium to another?
  • A Reflection
  • B Diffraction
  • C Refraction
  • D Interference
13 What are the building blocks of matter?
  • A Electrons
  • B Protons
  • C Neutrons
  • D Atoms
14 Which of these is a conductor of electricity?
  • A Rubber
  • B Glass
  • C Copper
  • D Wood
15 What is the unit of frequency?
  • A Second
  • B Hertz
  • C Newton
  • D Meter
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