Understand the science behind daily life through questions covering health, energy, environment, inventions and natural phenomena.
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Which device converts sound waves into electrical signals for recording or amplification?
Which kidney process selectively returns useful substances like glucose back to the bloodstream?
Which property of water causes it to expand when it freezes making ice less dense than liquid water?
Which medical imaging technique uses high frequency sound waves to visualise internal organs?
Which everyday material acts as a natural antibacterial due to its low water activity and acidic pH?
Which type of electromagnetic radiation is used in airport security scanners to see through luggage?
Which type of energy is stored in chemical bonds of fuel and released during combustion?
Which vitamin deficiency causes pellagra characterised by dermatitis diarrhoea and dementia?
Which everyday observation demonstrates Newton's Third Law of Motion?
Which household chemical should never be mixed with bleach as it produces toxic chloramine gas?
Which gas is most responsible for the depletion of the ozone layer?
Which famous experiment proved that the Earth orbits the Sun rather than the Sun orbiting the Earth?
Which phenomenon explains why sound travels faster in warm air than in cold air?
Which natural phenomenon occurs when the Earth's crust suddenly releases energy causing ground shaking?
Which phenomenon explains why the handles of pots and pans are made from plastic or wood rather than metal?
Which common observation explains why sound seems louder when heard through walls compared to open air over long distances?
Which scientific instrument is used to measure very small distances such as the diameter of a wire or thickness of a sheet?
Which common safety device in electrical circuits breaks the circuit when current exceeds a safe limit to prevent fires?
Which photoreceptor cells in the eye are responsible for vision in dim light and cannot distinguish colours?
Which photoreceptor cells in the eye are responsible for colour vision and function best in bright light?