States of Water
What are the three physical states of water?
Liquid, Gas, Solid
What is the term for the continuous movement of water on, above, and below the Earth's surface?
Water cycle
What is the purpose of filters in the water purification process?
To remove impurities and contaminants
What is the percentage of Earth's surface covered by water?
70%
At what temperature does water start to boil?
100°C
What is the process called when water changes from solid to liquid state?
Melting
What is the main source of energy for the water cycle?
What is the most common method used to disinfect water in water treatment plants?
Chlorination
What is the term for a large body of water surrounded by land?
Lake
Three methods of killing microorganisms in water?
Ozone, Chlorination, UV Light
What is the term for the process of water vapor turning directly into ice without going through the liquid phase?
Deposition
What is the term for the process of water falling from the atmosphere to the Earth's surface in the form of rain, snow, sleet, or hail?
Precipitation
What is the term for the process of removing solid particles from water by passing it through a porous material?
Filtration
What is the term for a body of water that is partially enclosed by land but has a connection to the ocean?
Bay
What is added during sedimentation
Alum
What is the term for a large natural stream of water that flows across the land and usually empties into a lake, ocean
River
What is the term for the process of water returning to the atmosphere from plants through their leaves?
Transpiration
What is the name for a device used to remove chlorine and other chemicals from tap water?
Water Filter
What is the term for the movement of water through plant roots and stems to reach the leaves?
Plant Uptake
What is the first step of water treatment in Hong Kong?
Filtration
What is the name for the process of water vapor changing directly into a gas without becoming a liquid first?
Sublimation
What is the term for the process of water moving through the soil and rock layers vertically due to gravity?
Percolation
What is the term for the process of removing dissolved salts from water to make it suitable for drinking?
Desalination
What is the term for the process of water flowing from higher elevations to lower elevations in rivers and streams?
Downstream flow
3 Factors affecting the rate of dissolving
Surface Area, Stirring, Temperature