States of Matter & Particle Theory
What state of matter has a definite volume but takes the shape of its container?
Liquid
What term shows and describes a fluids resistance to flow
Viscosity
What is the formula to calculate density?
Mass/volume
What is the upward force exerted by a fluid on an object placed in it.
Buoyant force / bouyancy.
Which type of fluid system focuses on compressed gases (mostly air) to do work.
Pneumatic system.
what happens to the speed of particles when a fluid is heated?
They move faster/ spread out
If Fluid (A) takes 5 seconds to flow down a ramp and fluid B takes 20 seconds which fluid has a higher visocity?
Fluid B ( it is thicker and it would flow slower)
If a object has a mass of 40g and a volume of 10cm3 what is its density?
4g/cm3
If an object gravitional force; weight is exactly he same/eeequal to the buoyant force acting on it what will the object do.
It will have neutral bouyancy ( hover and sit in the middle of the fluid)
Why are hydraulic systems usually alot more powerful and stable then pneumatic systems?
Hydraulic systems use liquids which are incompressible letting force to be transmitted directly and quick.
True or false Gas particles have stronger attractive forces between them than solid particles.
false solids have the strongest forces between them.
How does cooling a liquid change and effects its viscosity and its flow rate.
Cooling increases visocsity and makes it thicker and decreases flow rate. (makes it slower)
Why does ice float on top of liqquid water even though they are the exact same substance??
Water expands when it freezes which means ice has a llowe density then liqquid water thats why.
pressure increases because there is more weight of water pressing down on you above.
Tell us pascals principle regarding fluids in a closed system.
When pressure is applied to a closed fluid that pressure is put equally in all directions through the fluids.
Explain why gases can be easily compressed, but liquids and solids cannot.
Gas particles have massive amounts of empty space between them
Name two real industries where controlling and knowing viscosity is mandatory.
Food production, lotions cosmetics, automotive (oils etc), paint
lets say you drop a solid metal cube into a beaker container that has water, oil, and corn syrup. The cube sinks past the oil and water but floats on the corn syrup. What does it tell you about the cubes density?
It is desner than the oil and water but less dense then the corn syrup.
The ship is hollow and fillied with air which makes it desnsity less then the water letting it to displace enough water to create a big buoyant force.
In a hydraulic lift if you push down on a small piston with a force of 10N how does the force change when it reaches a bigger output piston?
The force increases ( Multiples the force)
What is it called when a liquid turns into a gas below its boiling point, like a puddle drying up on a hot day?
evaporation
Wy does lava from a valacano flow alot more slower then water from a garden hose?
Lava has amuch higher visocity.
If you mix water and vegetable oil in a cup why does the oil always float to the very top
Veg oil is less desnse then the water!
Why do your ears sometimes pop when u drive up high moutains or when your flying in a airplane.
Why do the brakes in a car stop working if there is a leak and air gets into the brake lines?
Brakes are hydraulic they use liquid if air gets in the air compresses isntead of pushing the brakes causing the system to fail..