Physics 1 - Answers

Published: Saturday 7th June 2025A free quiz about all aspects of Physical Science.
  1. What type of energy is associated with the motion of an object? Kinetic energy.
  2. Which branch of physics studies the relationships between heat, work, temperature, and energy in physical systems? Thermodynamics.
  3. What is the force that opposes motion between two surfaces that are in contact with each other? Friction.
  4. After which famous physicist is the SI unit of force named? Sir Issac NEWTON.
  5. On an electric circuit diagram, what symbol is used to represent a resistor? Rectangle (Europe) or Zig-Zag line (US).
  6. Who invented the mercury in glass thermometer? Daniel Fahrenheit.
  7. What is the science that studies the movement and behaviour of projectiles in flight known as? Ballistics.
  8. What name is given to atoms of an element with the normal number of protons and electrons, but different numbers of neutrons? Isotopes.
  9. Who proposed the theory of relativity? Albert Einstein.
  10. In electronics what does the abbreviation LED stand for? Light Emitting Diode.
  11. What do you call a nuclear reaction where subatomic particles join together? Nuclear Fusion.
  12. Equivalent to a Newton-Metre, what is the SI unit of work? Joule.
  13. In Physics, what is the bending of light as it passes from one medium to another known as? Refraction.
  14. What type of lens is used in a magnifying glass? Convex.
  15. In physics, what is the conversion of a substance from the solid to the gaseous state without its becoming liquid known as? Sublimation.
  16. According to Newton's Third Law of Motion, what does every action have? An equal and opposite reaction.
  17. What device measures a current in an electric circuit? An Ammeter.
  18. What metal is used to protect people from radiation? Lead.
  19. Which physicist is the author of the book "A Brief History of Time"? Stephen Hawking.
  20. Absolute Zero, the lowest possible temperature, is defined as being 0 degrees Kelvin, what is it in Degrees Celsius? Minus 273.15 degrees C.

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