Materials
What is the first material you would put in a water filter to catch large pieces of dirt?
Gravel
What is the name of the process when water turns into vapor and rises into the air?
evaporation
Why is it important to filter water?
clean water
How much of the Earth’s surface is covered by water?
71%
What do we call the solid particles or substances in the water that make it unsafe to drink?
contaminants
Which material is often used in water filters to remove chemicals and bad smells?
activated charcoal
What happens when the water vapor cools down and forms clouds?
condensation
What kind of substances can be removed from water using a filter?
bacteria
True or False: Water can only exist in one form at a time (solid, liquid, or gas).
False
What word means to make water safe to drink by removing harmful substances?
purification
Which material helps filter small particles in water after the gravel layer?
Sand
What do we call it when water falls from the sky as rain, snow, or hail?
precipitation
What is the process called when water is made clean by removing impurities?
purification
What is the largest source of fresh water on Earth?
glaciers and ice caps
What do we call the cycle that moves water through the environment?
water cycle
What household item can be used to trap fine particles in water?
Cotton Balls
When water collects in rivers, lakes, or oceans after it falls from the clouds, what do we call this part of the cycle?
collection
What do we call the water treatment process that removes harmful substances using layers of materials?
filtration
What percentage of the human body is made up of water?
60%
What is the name of the process where water turns into vapor because of heat?
evaporation
What type of filter is used to remove bacteria and viruses in advanced water filtration systems?
ceramic filter
What is the name of the process where water moves into the ground and is stored in the soil?
infiltration
Wich step involves letting the water settle so that heavier particles fall to the bottom?
sedimentation
True or False: Water covers most of the Earth’s surface.
True
What is the term for any harmful substances that contaminate water and make it unsafe?
pollutants