Everyday Science and General Knowledge
Everyday Science and General Knowledge tests basic physics, chemistry, biology, astronomy, and environment through everyday examples. Questions are conceptual, not advanced.
Core rules
- SI units: metre (length), kilogram (mass), second (time), ampere (current), kelvin (temperature), mole (amount), candela (luminous intensity).
- Speed = distance ÷ time; density = mass ÷ volume; force = mass × acceleration.
- Mass is constant; weight changes with gravity.
- Water boils at 100°C at sea level and at a lower temperature at high altitude.
- The solar system's order: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
- Photosynthesis uses carbon dioxide and water with light to make glucose and oxygen.
- The adult human body has 206 bones; the heart has four chambers.
Worked example
A runner covers 100 m in 20 s. Speed = 100 ÷ 20 = 5 m/s. To convert to km/h, multiply by 3.6: 18 km/h. Do not add the units incorrectly.
Traps
- Confusing mass and weight.
- Saying water boils at 100°C everywhere.
- Mixing planets' order or moons.
- Treating speed and velocity as identical; velocity has direction.
- Using the wrong unit prefix: 1 km = 1,000 m, not 100 m.
Read the unit in the question before calculating.