Which household water purification method uses ultraviolet light to kill bacteria and viruses?

Which preservation technique uses controlled heating to kill harmful microorganisms in liquids like milk?

Which water purification process removes dissolved salts and impurities by forcing water through a semi-permeable membrane?

Which common food preservation method works by removing moisture to inhibit bacterial growth?

Which natural disaster is measured using the Richter scale?

Which gas makes up approximately 21 percent of Earth's atmosphere and is essential for respiration?

Which scale is commonly used to measure the intensity of hurricanes and tropical cyclones?

Which instrument is used to detect and measure the magnitude of earthquakes?

Which scale is used to estimate wind speed based on observed sea or land conditions without instruments?

Which instrument is used to measure wind speed?

Which everyday chemical reaction is responsible for rusting of iron objects?