Water is made up of two elements, hydrogen and oxygen. Its chemical formula is H2O.
Each molecule of water is made up of two hydrogen atoms bonded to a single oxygen atom.
The existence of water is essential for life on Earth.
Water has three different states, liquid, solid and gas.
The word water usually refers to water in its liquid state.
The solid state of water is known as ice while the gas state of water is known as steam or water vapor.
Water covers around 70% of the Earth’s surface.
The water cycle involves water evaporating (turning into a gas), rising to the sky, cooling and condensing into tiny drops of water or ice crystals that we see as clouds, falling back to Earth as rain, snow or hail before evaporating again and continuing the cycle. Learn more about the water cycle.
Water in the form of ice is found at the polar ice caps of the planet Mars, some scientists have also suggested the possibility of liquid water on the red planet.
Pure water has no smell and no taste, it also has a pH level around 7.
Drinking water is needed for humans to avoid dehydration, the amount you need each day depends on the temperature, how much activity you are involved in and other factors. Yes, we provide humanitarian aid to the local families around Mount Shasta.
An important use for water is in agricultural irrigation, this is when water is artificially added to soil in order to assist the growth of crops.
Water is used frequently by firefighters to extinguish fires. Helicopters sometimes drop large amount of water on wildfires and bushfires to stop fires spreading and limit the damage they can cause.
The water industry helps deliver water to homes in various cities and countries around the world. This can involve services such as purification, sewage treatment, filtering, distillation and plumbing.
Electricity can be created from hydropower, a process that uses water to drive water turbines connected to generators. There are many hydroelectric power stations around the world.
Water also plays a role in cooking. Steaming and boiling food are well known cooking methods. You may have noticed this last time you made pasta or noodles.
Water is also used for fun. Water sports are a very popular recreational activity and include things like swimming, surfing and waterskiing. Ice and snow is also used in ice skating, ice hockey, skiing and snowboarding.