Everyday Science

Weather refers to the atmospheric conditions such as temperature, humidity, precipitation, and wind at a specific place and time, so it describes the condition of the atmosphere.

An equinox is the time when day and night are approximately equal in duration all over the Earth, which occurs twice a year when the sun crosses the celestial equator.

Mercury is commonly known as 'Quick Silver' because of its shiny, silver appearance and its liquid, fast-moving nature at room temperature.

The rate of evaporation depends on intermolecular forces. Petrol molecules do not form hydrogen bonds, which are strong intermolecular forces present in water. Because water molecules are hydrogen bonded, they evaporate more slowly than petrol at room temperature.

TCM stands for Traditional Chinese Medicine, which is a well-known system of medicine originating in China that includes herbal medicine, acupuncture, and other therapies.

Carbon dioxide is used in the preparation of soft drinks to provide carbonation, which gives the drinks their fizz and slight acidity.

A yard is defined as exactly 0.9144 meters, so 1 meter is the closest option to a yard in length among the choices given.

The sun is primarily composed of about 99.9% hydrogen and helium, with hydrogen making up roughly 74% and helium about 24% of its mass. Other elements are present only in trace amounts.

Honey's greater viscosity is primarily due to hydrogen bonding between its sugar molecules (glucose and fructose) and water, which creates strong intermolecular attractions, increasing resistance to flow. The irregular shape of molecules or molecular size is less significant compared to hydrogen bonding in determining viscosity.

A 1 KWh (kilowatt-hour) is the energy consumed by a 1000 watt device running for 1 hour. Therefore, a 100 watt bulb consumes 1 KWh in 10 hours because 100 watts × 10 hours = 1000 watt-hours = 1 KWh.