Water Basics
This is the percentage of Earth’s water that is fresh water.
What is 3%?
Salt water is this type of mixture.
What is a solution?
Water is called this because it dissolves many substances.
What is the universal solvent?
Plastics, oil, fertilisers, heavy metals, and sewage are examples of this.
What are water pollutants?
True or False: Everyone in the world has access to clean drinking water.
What is False?
Most of Earth’s fresh water is locked away here.
What are ice caps and glaciers?
This method best separates sand from water.
What is filtration?
This property allows water molecules to stick to each other and form droplets.
What is cohesion?
A pH test, copper test, and nitrates test all measure this.
What is water quality?
Ethiopia, India, and parts of Australia all face this problem.
What is water shortage (scarcity)?
Humans need fresh water for these purposes (name one).
What is drinking / agriculture / sanitation / industry?
Pure water can be collected from salt water using this process.
What is distillation?
This property helps water droplets stick to a window.
What is adhesion?
Heavy metals in water are dangerous for this reason.
What is because they are toxic and build up in living organisms?
Water scarcity makes this type of food production difficult.
What is farming (agriculture)?
This is the continuous movement of water between the surface, atmosphere, and underground.
What is the water cycle?
This method is used to separate a liquid from an insoluble solid when you pour carefully so the solid stays behind.
What is decanting?
Ice floats on liquid water because of this property.
What is ice being less dense than liquid water?
In the “Testing Water Quality” practical, this measurement can tell us if water is acidic, neutral, or basic.
What is pH?
Boiling, filtering, chlorine treatment, and water treatment plants are all examples of this.
What are methods of making water safe to drink?
This is why desalination is not used everywhere.
What is because it is expensive and uses lots of energy?
This is why sugar water cannot be separated by filtration.
What is because the sugar dissolves and passes through with the water?
This property allows water to move through narrow spaces against gravity.
What is capillary action?
This term describes tiny plastic pieces that end up in rivers and oceans and can harm fish and birds.
What are microplastics?
Lack of clean water can lead to these health problems.
What are diseases such as cholera, diarrhoea, or dehydration?