Mr Lyons
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What is density?
How do objects float?
How do substances float?
What is Density? How do objects float? How do substances float?
Density is the amount of mass in a volume.
It tells us how tightly matter is packed together.
What is Density? How do objects float? How do substances float?
You can make an object more dense by
decreasing the volume.
What is Density? How do objects float? How do substances float?
You can make an object more dense by increasing
the mass, but keeping the volume the same.
What is Density? How do objects float? How do substances float?
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Density is calculated by dividing the mass
(weight in Kilograms) by the volume in cm3
or m3.
For example, pure water has a density
1000kg/m3
What is Density? How do objects
float? How is density used?
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Substances float when
their density is lower
than the density, they
are floating in.
E.g. wood’s density is
between around
500kg/m3 this is half of
waters density of
1000kg/m3 so it floats.
What is Density? How do objects
float? How is density used?
250kg/m3
500kg/m3
1250kg/m3
What is Density? How do objects float? How do substances float?
A
pumice rock is a special
volcanic rock which has a density
of 190kg/0.25m3
 Remember
water is 1000kg/m3
 Calculate
would it float and show
your reasoning.
What is Density? How do objects
float? How is density used?
https://www.youtube.com/watch?v=vS
XTBnnx4OA&t=98s&ab_channel=It%27
sAumSumTime
What is Density? How do objects
float? How is density used?
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What is density?
How do objects float?
How do substances float?
What is Density? How do objects float? How do substances float?