World Water Day Quiz

Explanation
A desalination plant is a facility that converts saltwater, typically from the ocean, into drinkable water. This process involves removing the salt and other impurities from the water, making it safe for human consumption. Desalination plants play a crucial role in areas where freshwater resources are limited or contaminated, providing a sustainable solution for obtaining clean and safe drinking water.

Explanation
To save water, we can turn taps off. This means that by closing the taps or faucets, we can prevent water from flowing out unnecessarily. This action helps conserve water resources and reduces wastage.

Explanation
Sewage refers to waste water that is produced by various sources such as households, industries, and businesses. It contains a combination of water, human and animal waste, as well as other pollutants. Sewage needs to be treated before it can be safely discharged into the environment, as it can contain harmful bacteria, viruses, and chemicals. Therefore, the correct answer is waste water.

Explanation
Water tanks can be installed in schools to capture and store water. These tanks can collect rainwater or be connected to a water source such as a well or a municipal water supply. By having water tanks, schools can ensure a reliable water supply for various purposes such as drinking, sanitation, and irrigation. This helps to conserve water and reduce dependence on external water sources, especially in areas with limited access to clean water.

Explanation
Water can be used to power cars with hydroelectricity. Hydroelectricity is generated by converting the energy of flowing or falling water into electrical energy. This process involves the use of turbines and generators to harness the power of water and produce electricity. Therefore, water can be a source of renewable energy for powering cars through the generation of hydroelectricity.