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Physics Quiz
Physics · Easy
20 questions · Unlimited attempts · Free online practice
Physics is the fundamental science that explains how the universe works, from the smallest subatomic particles to the largest galaxies. It explores matter, energy, motion, forces,...
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All 20 questions in this Physics quiz
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What is the main source of energy on Earth?
- A. Moon
- B. Wind
- C. Sun
- D. Fire
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What is the primary unit of electric resistance?
- A. Volt
- B. Ampere
- C. Ohm
- D. Watt
-
In atomic physics, what is the term for the regions around an atomic nucleus where there is a high probability of finding an electron?
- A. Orbits
- B. Shells
- C. Orbitals
- D. Positrons
-
What is the term for the shift in frequency of a wave in relation to an observer who is moving relative to the wave source?
- A. Compton Shift
- B. Doppler Effect
- C. Planck Shift
- D. Rayleigh Scattering
-
What force pulls objects to Earth?
- A. Pressure
- B. Magnetism
- C. Gravity
- D. Friction
-
What is the name for the energy an object possesses due to its motion?
- A. Potential Energy
- B. Thermal Energy
- C. Kinetic Energy
- D. Chemical Energy
-
Which scientist was awarded the Nobel Prize in Physics for his discovery of the photoelectric effect, not for his work on relativity?
- A. Isaac Newton
- B. Niels Bohr
- C. Albert Einstein
- D. Max Planck
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Which wave requires a medium to travel?
- A. Light
- B. X-ray
- C. Radio
- D. Sound
-
What is the SI unit of power, defined as one joule per second?
- A. Volt
- B. Watt
- C. Ampere
- D. Newton
-
Which force keeps an object moving in a circular path and is always directed toward the center of the circle?
- A. Centrifugal Force
- B. Centripetal Force
- C. Friction
- D. Torque
-
What physical phenomenon occurs when light changes direction as it passes from one medium to another, such as from air into water?
- A. Reflection
- B. Diffraction
- C. Refraction
- D. Interference
-
What type of energy is stored in a compressed spring?
- A. Potential
- B. Nuclear
- C. Kinetic
- D. Thermal
-
What is the name for the process where a solid changes directly into a gas without passing through the liquid phase?
- A. Evaporation
- B. Condensation
- C. Sublimation
- D. Deposition
-
What is the center of an atom called?
- A. Nucleus
- B. Core
- C. Orbit
- D. Shell
-
Which subatomic particle has no charge?
- A. Proton
- B. Electron
- C. Neutron
- D. Positron
-
Which of these is the SI unit for the amount of a substance, containing exactly 6.022 x 10^23 elementary entities?
- A. Kilogram
- B. Liter
- C. Mole
- D. Candela
-
In the context of fluid mechanics, what is 'Viscosity'?
- A. The density of the fluid
- B. The fluid's resistance to flow or deformation
- C. The pressure at the bottom of the fluid
- D. The speed of waves in the fluid
-
What is the term for the maximum speed an object can reach while falling through a fluid, like air?
- A. Sonic Speed
- B. Terminal Velocity
- C. Escape Velocity
- D. Critical Speed
-
In optics, what is the term for the point where light rays originating from a point on an object converge after passing through a lens?
- A. Aperture
- B. Focus (or Focal Point)
- C. Optical Axis
- D. Parallax
-
Which physical constant represents the speed of light in a vacuum, the absolute speed limit of the universe?
- A. 299,792,458 m/s
- B. 343 m/s
- C. 150,000,000 m/s
- D. 1,080,000,000 m/s