Test Your Knowledge on plastics and buoyancy
Have you just done a science lesson looking at plastic and which types float and sink? Complete this assessment quiz to test your knowledge!
Which of these materials is a polymer?
Pottery
Nylon
Zinc
Carbon dioxide
Name two properties of polymers
Brittle and hard
Conduct electricity and silver in colour
Chemically unreactive and solid
Liquid and react with metals
What is density?
The force displaced by an object
Mass per unit volume
Volume per unit mass
Force over a certain area
How do you calculate density?
Mass divided by volume (mass/volume)
Volume divided by mass (volume/mass)
Distance divided by time (distance/time)
Force divided by mass (Force/mass)
Which of these objects would not float in water (density of 1g/cm3)?
A yogurt pot made of HDPE (density = 0.95 g/cm3)
A empty plastic bottle with a lid on made of polyethylene terephthalate (density = 1.4 g/cm3)
A car dashboard made of polyvinyl chloride (density = 1.29 g/cm3)
A plastic chair made of polypropylene (density = 0.9 g/cm3)
Answer 5
True or False: Seawater is less dense than distilled water.
Pure water has a density of 1.0 g/cm3
Seawater has a density of 1.03 g/cm3
So seawater is more dense than pure water. How could you test this?
Seawater has a density of 1.03 g/cm3
So seawater is more dense than pure water. How could you test this?
True
False
What happens to pressure in a liquid as its depth increases?
It decreases
It stays the same
It increases
Complete the sentence: Plastics are a problem when discarded at sea because....
they float around in big islands.
ocean creatures eat them thinking they are food and they never break down entirely.
they dissolve.
they react with seawater to form acids which are dissolving coral reefs.
What is produced when plastics break down in the environment?
Carbon dioxide
Microplastics
Methane
Water
Which is the best option when buying a drink to takeaway from a coffee shop?
Use a polystyrene cup
Use a recyclable but disposable plastic cup
Use a biodegradable plastic free cup
Bring your own refillable insulated drinks cup
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Well done on a great score!
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Whoa! You are a true plastic expert!
That's a great score!
You have excellent knowledge of all the facts! People learn from you, but don't forget there is always room for improvement. Keep on learning and inspiring others. The world needs you!
