Water that is released from clouds in the sky; includes rain, snow, hail...
Precipitation
Why does water move from the roots to the leaves of plants?
Capillary action (because of adhesion and cohesion)
If I wash a fleece jacket, can microplastics get into water?
Yes (because neither washing machines nor treatment plants completely filter out microplastics.)
Why is it dangerous for many marine animals when plastic waste ends up in the sea?
Animals think plastic waste is food, but cannot digest it. The plastic stays in the stomach and the animals can die.
What are microplastics?
All plastic bits that measure between one micrometre and five millimetres in size.
What is plastic made of?
Plastic is made from crude oil (petroleum) and natural gas.
Cigarette filters are a particularly big problem for the environment. Why is that?
Because it is common to throw the cigarette butts on the ground after smoking.
True or False: The hydrosphere keeps the Earth warm by absorbing the heat of the sun
True
Where is most of Earth's fresh water?
In icecaps and glaciers.
True of False: Taking a bath saves more water than a quick shower
False
How can we reduce the flow of plastic waste into the ocean?
Refuse plastic whenever possible (replace plastic items with alternatives made from natural materials: bamboo toothbrushes, glass jars, cotton T-shirts...)
Name three or more things that pollute the water
Waste water treatment plants (water from our toilets and sinks); fertilisers and pesticides from agriculture; plastics from boats; oil spills...
Name some ways to keep our water clean
Reduce our waste, reduce the use of fertilizers and pesticides, reduce the consumption of oil (petroleum)...
