True. Ice is less dense than water (and that is why ice floats on liquid water).
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15
What are microplastics?
All plastic bits that measure between one micrometre and five millimetres in size.
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15
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...)
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baam
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15
TRUE OR FALSE: Water heats up and cools quickly.
False. Water has resistance to change its temperature.
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20
What is water found below the surface called?
Groundwater
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15
Name some ways to keep our water clean
Reduce our waste, reduce the use of fertilizers and pesticides, reduce the consumption of oil (petroleum)...
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20
Why is water called the "universal solvent"?
It dissolves more substances than any other liquid.
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15
What percentage of the Earth's surface is covered in water?
About 70%
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20
What property of water allows insects to walk on water?