Freezing is the process where liquid water turns into solid ice. When the temperature drops below 0°C, the water molecules lose energy, slowing down and forming a rigid structure known as ice.
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The rate of evaporation is influenced by temperature, humidity, wind speed and surface area. Higher temperatures and lower humidity increase evaporation, while higher wind speeds and larger surface areas also enhance the process.
Condensation is the process where water vapor in the air cools and changes back into liquid water. This occurs when the temperature of the vapor drops below its dew point, forming droplets.
Water evaporates when it absorbs heat energy, which increases the kinetic energy of its molecules. This energy allows the molecules to escape from the liquid state into the gas phase as water vapor.
Water changes from solid (ice) to liquid (water) through the process of melting. When heat is applied, the temperature rises, causing the ice to absorb energy and transition into a liquid state.
Water exists in three states: solid (ice), liquid (water), and gas (steam or water vapor). Each state has distinct properties and transitions between states occur due to changes in temperature and pressure.
No, touching a person is not a reliable method to diagnose fever. Body temperature can be difficult to assess accurately by touch alone. Using a thermometer provides a precise measurement to confirm if someone has a fever.
During the COVID-19 pandemic, infrared thermometers were used to measure a person’s temperature from a distance. They detect heat radiating from the body and provide quick, non-contact temperature readings.
Yes, small children generally have slightly higher body temperatures compared to adults. Their normal body temperature ranges from 36.5°C to 38°C due to a higher metabolic rate and less effective temperature regulation.
Yes, older people, even when healthy, often have lower body temperatures than young adults. This is due to a slower metabolism and less efficient regulation of body temperature in older age.