Mix & Flow Major Unit Test Flashcards
What is Density? What is a property of density?
Density is the ratio of mass to volume. Solids are always more dense than liquids and gases.
What is the formula for Density?
Mass / Volume = Density
What is the formula for Mass?
Density X Volume = Mass
What is the formula for Volume?
Mass / Density
What are the measurements for Liquids and Solids?
Solids = g/cm3 Liquids = g/ml
What is Archimedes’ Principle?
When an object is placed in water, the amount of water displaced will be the same as the volume of the object placed in.
What is Buoyancy?
The ability/tendency to float
What is the Buoyant Force?
The upwards for on an object when it is in water
What does Negatively, Positively, and Neuteraly Buoyant mean?
Positively Buoyant = Floats
Negatively Buoyant = Sinks
Neutrally Buoyant = Doesn’t float or sink.
What is Gravity?
The downward force on an object.
What is the Formula for Pressure?
Force divided by area. Pa = F / A
What are the units for Pressure, Force, and Area?
Pressure = Pascals / Pa
Force = Newtrons / N
Area = M2
What is Pressure?
Force applied to a given area
How does pressure change based on water level? How does Pressure relate to Depth?
In a body of water, the deeper you go, the more pressure increases, as the greater weight of water on top pushes down. More depth means there will be more pressure.
What is Pascal’s Law?
if pressure is applied on a liquid in an enclosed space, the same pressure will be exerted throughout all sides of the container. This occurs because the water will scatter in all directions, as water cannot be compacted.
Why can gas be compressed but liquids cannot?
Gas can be compressed as between each molecule, there is an ample amount of space to fit a particle in between, allowing the molecules to bunch up and fill those gaps. When working with liquids, there isn’t enough space between each molecule to fit another molecule, this leads the liquid molecules to frantically scatter around, trying to find a location to stay.
What would happen if a liquid was attempted to be compressed?
The liquid molecules would scatter, traveling in all directions.
How can compression build up pressure?
When compression is applied to water, it can cause the water to travel and apply that same pressure to another area.
For example, there are 2 pistons, one big and one small, and both are filled with water and connected. If the water in piston 1 was attempted to be compressed, then, the water would travel from piston 1 to piston 2, creating an upward pressure that can be used to lift heavy objects.
