Fluids and Viscousity Flashcards
What is a force?
Anything that causes a change in the motion of an object.
A push or pull.
What are balanced forces? (2 points)
Equal in strength, no movement.
What are unbalanced forces? (two points)
Unequal in strength, cause a change in speed or direction.
Does mass stay the same anywhere in the universe?
Yes
What is mass measured in?
Measured in kilograms.
What does weight measure?
A measure of the push or pull acting on an object.
How do you measure weight?
Measured in Newton.
What is buoyancy?
Buoyancy is the force that pushes an object up when it’s in a fluid.
High buoyancy = _______________
High buoyancy = something that floats in water.
Neutral Buoyancy = _________________
Neutral Buoyancy = something that floats in the middle (neither sinks or float)
Negative buoyancy = ________________
Negative buoyancy = something that sinks in water
If the thing you put in water is heavier than the water itself, what will happen?
The object will sink.
How do you find the average density?
To find the average density you must divide the total mass of all substances that make up an object divided by the total volume.
What is pressure?
The force acting in a certain area of surface.
the larger the force the ________ the pressure
the larger the force the greater the pressure.
the smaller the area, the _______ the pressure.
the smaller the area, the greater the pressure.
What is the unit for pressure?
Pa (Pascal)
What are the formulas for Pressure, Force, and Area?
P = F/A
F = P x A
A = F/P
What is Pascals Law?
When you push on a fluid, the pressure spreads evenly in all directions.
What is hydraulics? (four points)
- Hydraulics is the study of pressure in liquids.
- Hydraulics is using a liquid to transmit force and make things move.
- use liquids because they are incompressible
- the pressure produces will exert in all directions equally.
What is boyles law?
increasing the pressure of a fluid will decrease the volume
High temperature = _______ the volume of a fluid.
High temperature = increase the volume of a fluid
High temperature = _______ the pressure
High temperature = increasing the pressure
