Definitions
What is the equation for Density?
What is Density = Mass / Volume
If the density of an object is less than the density of the fluid, the object will do this. (rise or sink?)
What is rise?
Is a jackhammer an example of a pneumatic or hydraulic system?
What is a pneumatic system
Particles are constantly in motion is one of the 6 main points of this theory.
What is the Particle Theory of Matter?
Doing this to a liquid makes the substance more viscous. (Heat it up or cool it down?)
What is cooling a substance?
True or false: To predict whether or not an object will float in a fluid, all you need to know is the weight of the object.
False. You need to know its volume too
What is a hydraulic system
The particles of this state of matter are far apart.
What is a gas?
Doing this to a gas makes this less viscous. (Heat it up or cool it down?
What is cooling the gas?
True or false If something floats, it is said to be buoyant.
True
A system that uses a compressed gas to do work
What is a pneumatic system?
When you do this to a liquid, the particles move faster and farther apart until it turns into a gas. (Heating it up or cooling it down?)
What is heating up a liquid?
Calculate the density (using the equation for density) of the following: A 2.0 mL sample of a liquid has a mass of 12g.
What is 6.0 g/mL?
As you sip juice from a straw you are creating _____ pressure in the container. (high or low pressure?)
What is high pressure?
Squeezing an end of a toothpaste tube and it pushing out of the opening is an example of ______
What is Pascal's Law?
When the temperature of a substance decreases, does the volume increase or decrease?
What is decrease of volume or contraction?
For a substance to float in water it needs to have a density less than:____g/ml. (its a whole number)
What is 1g/mL?
Heating up a fluid creates a _____ pressure. (Higher or Lower?)
What is a lower pressure?
A system that uses a compressed liquid to do work.
What is a hydraulic system?