density
what is density
the amount of substance in a volume.
what is buoyancy
the tendency of an object to sink or float
what is a hydraulic system?
a system using water
what is viscosity
the thickness or thinness of a fluid
true or false: liquid and gas is a fluid
true
what is the densest state of matter
solids
how do things float
it has a lesser density than the fluid it is in
what is a pneumatic system
a system using air
true or false: pressure is greater at the bottom
true
is Amariah the smartest person ever?
no, many people including Albert Einstein are much smarter than Amariah
if in a cup there is molasses at the bottom, water in the middle, and oil at the top, what is the most dense?
the molasses
what is it called when something hovers in the middle
neutral buoyancy
true or false: air is in compressible, water isn't
false, water is in compressible, air is
on a graph on density what does the steep and shallow line mean
a steep slope means a greater density and a shallow one means a lesser density
what is flow rate
the distance the fluid travels per second
what is the density of water
1 g/ml
how do boats float
the bottom part is filled with air
what is pascals law
when pressure is applied to an enclosed fluid system, the pressure is distributed equally
what is water displacement
when you put something like a boat in water it floats but not entirely, the bottom is submerged in water which displaces the same amount of water as the boat weighs
how do hot air balloons work
the hot air is less dense than cold air so it floats up.
what is the relationship between density, mass, and volume
d = m/v
in terms of density it is: solid>liquid>gas
what is the one exception and how so?
water, ice which is a solid floats on top of water making it less dense than its liquid form (water)
what is it called if a hydraulic system has a hole in it?
a failed system
if a dam has a hole at the bottom and one near the top what will happen?
the bottom hole will have water gushing out at the bottom with a greater force.
how does popcorn work?
the popcorn kernel has a small amount of water which turns into steam when heated. the steam is a gas which has more space between the particles, this creates a need for a higher volume. this need creates pressure which makes the kernel go pop!