Practice Test GeeksGCE O-Level Practice Test
← All O-LEVEL Flashcard Decks

Combined Science — Physics Flashcards

6 cards from real O-LEVEL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Combined Science — Physics flashcards as text

  1. What is the SI unit of force?

    Answer: Newton

    The SI unit of force is the Newton (N), named after Sir Isaac Newton.

  2. A 5 kg object accelerates at 3 m/s². What is the net force acting on it?

    Answer: 15 N

    F = ma = 5 × 3 = 15 N, using Newton's Second Law.

  3. Which type of wave requires a medium to travel?

    Answer: Sound waves

    Sound waves are mechanical waves that require a medium (solid, liquid, or gas) to travel; they cannot travel through a vacuum.

  4. What is the formula for density?

    Answer: Density = Mass/Volume

    Density = Mass/Volume (ρ = m/V), measured in kg/m³ or g/cm³.

  5. Which phenomenon explains why a straw appears bent when placed in a glass of water?

    Answer: Refraction

    Refraction is the bending of light as it passes from one medium (water) to another (air) at different speeds, making the straw appear bent.

  6. What type of energy does a moving car possess?

    Answer: Kinetic energy

    A moving object has kinetic energy — energy due to its motion. KE = ½mv².

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. file.go.gov.sg — Retake policy · verified Nov 2026
  2. seab.gov.sg — Passing score, score release, test delivery, eligibility, fees, registration · verified Nov 2026