Density Flashcards
What if density?
Tells you the mass of a particular volume of a substance
What is density in simple terms?
Mass per unit of volume
How do you find mass?
Density x Volume
How do you find density?
Mass / Volume
How do you find volume?
Mass / Density
What are the units of measurement for density?
It combines the units for mass & volume
Eg. Kg/m3 or g/cm3
What is the density of water?
1 g/ml3
Does the density of an object change with its size?
No, 100ml & 1L of water still have a density of 1
What are the 2 things you can float in? Give 1 example
Liquids - ducks can float in water
&
gasses - balloons float in the air
What is a fluid?
A liquid or a gas
Why will something float?
It will float if it’s less dense then that fluid
How does a ship float?
It’s hill is filled with water, air is less dense than water
Can we float on water?
Yes, us & water are nearly the same density, if we take a deep breath & hold it we can float
Why can we float in the Dead Sea?
The Dead Sea has so much salt in it that we are less dense than the water, so we float
